Anmed Health v. Azar ( 2022 )


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  •                              UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF COLUMBIA
    ANMED HEALTH,
    Plaintiff,
    v.                                              Civil Action No. 20-3826 (RDM)
    XAVIER BECERRA, 1
    Defendant.
    MEMORANDUM OPINION
    Plaintiff AnMed Health (“AnMed”) operates a hospital with two campuses—the main
    North Fant Street Campus and the remote North Campus—less than 3 miles apart from one
    another in Anderson, South Carolina. In 2016, AnMed applied for classification as a sole
    community hospital under the Medicare program. See 
    42 C.F.R. § 412.92
    . If approved, AnMed
    would be reimbursed at a higher rate for services provided to Medicare beneficiaries at both of
    its campuses. To qualify as a sole community hospital under the relevant portion of the
    governing regulations, AnMed was required to show that it was located more than 25 miles
    “from other like hospitals.” 
    Id.
     § 412.92(a)(1).
    The Centers for Medicare and Medicaid Services (“CMS”) rejected AnMed’s application
    for failure to satisfy the distance requirement because the hospital’s remote North Campus was
    located less than 25 miles (i.e., 23.8 miles) from a like hospital. AnMed appealed, arguing that
    the Medicare statute and governing regulations required that AnMed satisfy the distance
    requirement only as to its main North Fant Street Campus, which was located more than 25 miles
    1
    Xavier Becerra is substituted for his predecessor, Alex M. Azar II, as the Secretary of Health
    and Human Services. Fed. R. Civ. P. 25(d).
    from a like hospital. On appeal, the Provider Reimbursement Review Board (the “Board”)
    agreed with AnMed and held that its application should have been approved. The Secretary of
    the Department of Health and Human Services (the “Secretary”), however, acting through the
    Principal Deputy Administrator of CMS, reviewed the Board’s decision and reversed.
    AnMed brings this action pursuant to the Medicare statute, 42 U.S.C. § 1395oo(f),
    challenging the Secretary’s decision, which it contends (1) was not dictated by the Medicare
    statute; (2) is contrary to the plain language of the then-applicable regulations and to the
    Secretary’s own interpretation of those regulations; and (3) impermissibly gives retroactive
    effect to a regulation adopted after the relevant reporting period. The parties’ cross-motions for
    summary judgment are now before the Court.
    For the reasons explained below, the Court will DENY AnMed’s motion for summary
    judgment and will GRANT the Secretary’s cross-motion.
    I. BACKGROUND
    A.     Statutory and Regulatory Background
    1.      Sole Community Provider Rule
    Established in 1965, the Medicare program “provides health insurance for the elderly and
    disabled and reimburses qualifying hospitals for services provided to eligible patients.” Cath.
    Health Initiatives Iowa Corp. v. Sebelius, 
    718 F.3d 914
    , 915–16 (D.C. Cir. 2013). In 1972,
    Congress authorized the Secretary of Health, Education, and Welfare to set prospective limits on
    costs that hospitals could recover for services provided to Medicare beneficiaries. Social
    Security Amendments of 1972, 
    Pub. L. No. 92-603, § 223
    , 
    86 Stat. 1329
    , 1393–94 (1972). The
    statute did not give special consideration to hospitals that were the sole providers of Medicare
    services in their communities. The congressional committees that reported the legislation,
    2
    however, indicated that they “expect[ed] that the provision [would] not be applicable where there
    is only one hospital in a community” because “additional charges could be imposed on
    beneficiaries who have no real opportunity to use a less expensive, non-luxury institution, and
    where the provision would be difficult to apply because competitive cost data for the area are
    lacking.” S. Rep. No. 92-1230, at 188 (1972); H.R. Rep. No. 92-231, at 84 (1971) (same). In
    light of these concerns, the Secretary of Health, Education, and Welfare promulgated regulations
    exempting “sole community provider[s]” from Medicare reimbursement limits “where a
    provider[,] by reason of factors such as isolated location or absence of other providers of the
    same type, is the sole source of such care reasonably available to beneficiaries.” 
    20 C.F.R. § 405.460
    (f)(4) (1975).
    The “sole community provider” designation remained purely regulatory until 1983, when
    Congress overhauled the Medicare provider reimbursement process by establishing the Inpatient
    Prospective Payment System (“IPPS”). Under the IPPS, hospitals now receive fixed payments
    for inpatient services at prospective rates set by the Secretary (by this time, Congress had created
    the Department of Health and Human Services). See generally Social Security Amendments of
    1983, Pub. L. No. 98–21, tit. VI, §§ 601–07, 
    97 Stat. 149
    , 158 (1983). Congress adopted this
    system “to improve the medicare system’s ability to act as a prudent purchaser of services, and to
    provide predictability regarding payment amounts for both the Government and hospitals.” H.R.
    Rep. No. 98-25, at 132 (1983). Most importantly, the system was adopted “to reform the
    financial incentives hospitals face, promoting efficiency in the provision of services by
    rewarding cost/effective hospital practices.” 
    Id.
     At the same time, however, Congress remained
    concerned about communities with only one hospital, and it therefore established a separate and
    more generous reimbursement formula for “sole community hospital[s],” which are statutorily
    3
    defined as “hospital[s] that, by reason of factors such as isolated location, weather conditions,
    travel conditions, or absence of other hospitals (as determined by the Secretary), [are] the sole
    source of inpatient hospital services reasonably available to individuals in a geographical area
    who are entitled to benefits under [Medicare] part A.” Pub L. No. 98–21 § 601(e), 
    97 Stat. 158
    .
    Congress has amended the statutory definition of a “sole community hospital” or
    (“SCH”) several times since it first appeared in 1983. Under the current definition, which is
    applicable to the events at issue in this case, an SCH is any “hospital”:
    (I)     that the Secretary determines is located more than 35 road miles from
    another hospital,
    (II)    that, by reason of factors such as the time required for an individual to
    travel to the nearest alternative source of appropriate inpatient care (in
    accordance with standards promulgated by the Secretary), location,
    weather conditions, travel conditions, or absence of other like hospitals
    (as determined by the Secretary), is the sole source of inpatient hospital
    services reasonably available to individuals in a geographic area who are
    entitled to benefits under part A, or
    (III)   that is located in a rural area and designated by the Secretary as an
    essential access community hospital under section 1395i-4(i)(1) of this
    title as in effect on September 30, 1997.
    42 U.S.C. § 1395ww(d)(5)(D)(iii).
    CMS, which administers the Medicare program on behalf of the Secretary, has
    promulgated regulations implementing this provision. See 
    42 C.F.R. § 412.92
    . Under those
    regulations, “CMS classifies a hospital as a sole community hospital if it is located more than 35
    miles from other like hospitals, or it is located in a rural area . . . and meets one of [several
    alternative] conditions.” 
    Id.
     § 412.92(a) (emphasis added). As relevant here, those alternative
    conditions include that “[t]he hospital is located between 25 and 35 miles from other like
    hospitals and” the hospital satisfies one of three additional criteria, id. § 412.92(a)(1)(i)-(iii),
    4
    which are not at issue for present purposes. 2 The SCH regulations define “miles” to mean “the
    shortest distance in miles measured over improved roads.” Id. § 412.92(c)(1). An “improved
    road,” in turn, is defined to include (1) “any road that is maintained by a local, State, or Federal
    government entity and [that] is available for use by the general public” and (2) “the paved
    surface up to the front entrance of the hospital.” Id.
    The regulations define a “like hospital” to mean:
    a hospital furnishing short-term, acute care. Effective with cost reporting
    periods beginning on or after October 1, 2002, for purposes of a hospital seeking
    sole community hospital designation, CMS will not consider the nearby hospital
    to be a like hospital if the total inpatient days attributable to units of the nearby
    hospital that provides a level of care characteristic of the level of care payable
    under the acute care hospital inpatient prospective payment system are less than
    or equal to 8 percent of the similarly calculated total inpatient days of the
    hospital seeking sole community hospital designation.
    Id. § 412.92(c)(2). Under this rule, CMS uses “inpatient days as the unit of measurement for
    determining” whether hospitals provide “overlapping services,” and a hospital is an “other like
    2
    Those criteria include the following:
    (i)     No more than 25 percent of residents who become hospital
    inpatients or no more than 25 percent of the Medicare beneficiaries
    who become hospital inpatients in the hospital's service area are
    admitted to other like hospitals located within a 35-mile radius of
    the hospital, or, if larger, within its service area;
    (ii)    The hospital has fewer than 50 beds and the MAC certifies that the
    hospital would have met the criteria in paragraph (a)(1)(i) of this
    section were it not for the fact that some beneficiaries or residents
    were forced to seek care outside the service area due to the
    unavailability of necessary specialty services at the community
    hospital; or
    (iii)   Because of local topography or periods of prolonged severe weather
    conditions, the other like hospitals are inaccessible for at least 30
    days in each 2 out of 3 years.
    
    42 C.F.R. § 412.92
    (a)(1).
    5
    hospital” if “the total acute inpatient days of the nearby hospital is greater than 8 percent of the
    total inpatient days reported by the SCH applicant hospital.” Medicare Program; Changes to the
    Hospital Inpatient Prospective Payment Systems and Fiscal Year 2003 Rates, 
    67 Fed. Reg. 49,982
    , 50,054–55 (Aug. 1, 2002).
    To apply for classification as an SCH, a hospital must submit a request to its Medicare
    Administrative Contractor (“MAC”), a private contractor that processes reimbursement claims
    on behalf of CMS. 
    42 C.F.R. § 412.92
    (b)(1)(i); see also 42 U.S.C. § 1395h. The MAC then
    reviews the hospital’s request and sends it, with a recommendation, to CMS. 
    42 C.F.R. § 412.92
    (b)(1)(iv). CMS, in turn, reviews the request and the MAC’s recommendation and
    “forward[s] its approval or disapproval to the MAC.” 
    Id.
     § 412.92(b)(1)(v). If the hospital is
    dissatisfied with CMS’s determination, it may file an appeal with the Provider Reimbursement
    Review Board, an administrative tribunal “composed of five members appointed by the
    Secretary,” which has “the power to affirm, modify, or reverse a final determination.” 42 U.S.C.
    § 1395oo(a), (d), (h); see also 
    42 C.F.R. § 412.92
    (b)(2)(ii). The Board’s decision is “final unless
    the Secretary, on his own motion, and within 60 days after the [hospital] is notified of the
    Board’s decision, reverses, affirms, or modifies the Board’s decision.” § 1395oo(f)(1). The
    provider may seek judicial review “within 60 days of the date on which notice of any final
    decision by the Board or any reversal, affirmance, or modification by the Secretary is received.”
    Id.
    2.      Provider-Based Status
    Since the beginning of the Medicare program, some hospitals have owned, operated, and
    financially and clinically administered subordinate medical facilities—including off-campus
    6
    facilities—under the umbrella of a single entity. 3 Prior to the creation of the IPPS in 1983,
    “there was little incentive for providers to affiliate with one another merely to increase Medicare
    revenues . . . because at that time each provider was paid primarily on a retrospective, cost-based
    system.” 65 Fed. Reg. at 18,504. The creation of the IPPS, however, generated “financial and
    organizational incentives” for hospitals to acquire additional facilities and to bill Medicare as a
    single unit. Id. In the fifteen years following the IPPS’s creation, the number of affiliated
    facilities claiming a Medicare status as a single hospital skyrocketed. See Medicare Program;
    Prospective Payment Systems for Hospital Outpatient Services, 
    63 Fed. Reg. 47,552
    , 47,587
    (proposed Sept. 8, 1998). In response, CMS adopted requirements that main hospitals and their
    subordinate facilities must satisfy to obtain “provider-based” status for the subordinate facility—
    that is, to enable the subordinate facility to be viewed as “part of the hospital” for, among other
    things, billing purposes. 81 Fed. Reg. at 45,682; see also 
    42 C.F.R. § 413.65
    .
    Current Medicare regulations set detailed conditions for obtaining “provider-based
    status,” including when the main hospital seeks to treat “remote locations” as part of the “the
    hospital.” 
    42 C.F.R. § 413.65
    (a)(1)(i). Under these regulations, a “provider-based status” arises
    when a “main provider” “creates, or acquires ownership of, another entity to deliver additional
    health care services under [the main provider’s] name, ownership, and financial and
    administrative control.” 
    Id.
     § 413.65(a)(2). “[W]hether located on or off the campus of a
    potential main provider,” CMS will grant a “facility or organization” “provider-based status”
    3
    See Office of Inspector General; Medicare Program; Prospective Payment System for Hospital
    Outpatient Services, 
    65 Fed. Reg. 18,434
    , 18,504 (Apr. 7, 2000) (to be codified at 42 C.F.R. pts.
    409, 410, 411, 412, 413, 419, 424, 489, 498, 1003); Medicare Program: Hospital Outpatient
    Prospective Payment and Ambulatory Surgical Center Payment Systems and Quality Reporting
    Programs, 
    81 Fed. Reg. 45,604
    , 45,682 (proposed July 14, 2016) (to be codified at 42 C.F.R. pts.
    416, 419, 482, 486, 488, 495).
    7
    only if both the main and affiliated facility (here, a “remote location”) satisfy certain
    requirements. 
    Id.
     § 413.65(d).
    First, if permitted by state law, the main and remote locations must operate under the
    same license. Id. § 413.65(d)(1). Second, the “clinical services” of the main and remote
    locations must be “integrated as evidenced by the following:” (1) the professional staff at the
    remote location have “clinical privileges” at the main facility; (2) the main provider “maintains
    the same monitoring and oversight of the [remote facility] as it does for any other department of
    the provider;” (3) “[t]he medical director of the [remote facility] maintains a reporting
    relationship with the chief medical officer . . . of the main provider that has the same frequency,
    intensity, and level of accountability that exists in the relationship between the medical director
    of a department of the main provider and the chief medical officer . . . of the main provider” and
    is “under the same type of supervision and accountability as any other director . . . of the main
    provider;” (4) “[m]edical staff committees . . . at the main provider are responsible for medical
    activities” at the remote facility; (5) “[m]edical records for patients treated in the [remote]
    facility are integrated into a unified retrieval system . . . of the main provider;” and (6)
    “[i]npatient and outpatient services” in the two facilities are integrated, so that “patients treated
    at the [remote] facility . . . who require further care have full access to all services of the main
    provider and are referred where appropriate to the corresponding inpatient or outpatient
    department . . . of the main provider.” Id. § 413.65(d)(2). Third, “[t]he financial operations of
    the” two facilities must be “fully integrated,” and, fourth, the remote facility must be “held out to
    the public and other payers as part of the main provider,” so that patients who enter the remote
    facility “are aware that they are entering the main provider and are billed accordingly.” Id.
    § 413.65(d)(3)–(4).
    8
    Off-campus facilities or organizations, moreover, must meet additional requirements.
    Id. § 413.65(e). They must, for example, demonstrate that “[t]he facility or organization seeking
    provider-based status is operated under the ownership and control of the main provider.”
    Id. § 413.65(e)(1). They must also meet location-based criteria: To qualify for provider-based
    status, an off-campus facility must be in the same state or an adjacent state as the main provider,
    id. § 413.65(e)(3)(vii), and must either be within 35 miles of the main provider,
    id. § 413.65(e)(3)(i), or “meet other specified location requirements designed to ensure that the
    campuses serve the same patient populations,” Anna Jacques Hosp. v. Burwell, 
    797 F.3d 1155
    ,
    1168 n.6 (D.C. Cir. 2015) (citing 
    42 C.F.R. § 413.65
    (e)(3)(ii)-(vi)).
    As noted above, one type of facility that may obtain provider-based status is a “remote
    location of a hospital.” 
    42 C.F.R. § 413.65
    . Under CMS regulations, a remote location of a
    hospital is defined, in relevant part, as:
    [A] facility or an organization that is either created by, or acquired by, a hospital
    that is a main provider for the purpose of furnishing inpatient hospital services
    under the name, ownership, and financial and administrative control of the main
    provider, in accordance with the provisions of this section. A remote location
    of a hospital comprises both the specific physical facility that serves as the site
    of services for which separate payment could be claimed under the Medicare or
    Medicaid program, and the personnel and equipment needed to deliver the
    services at that facility. The Medicare conditions of participation do not apply
    to a remote location of a hospital as an independent entity.
    
    Id.
     § 413.65(a)(2). Like other provider-based facilities, remote locations of hospitals operate
    under the main provider’s Medicare provider agreement, using the main provider’s Medicare
    provider number, through which the remote location may bill for services provided to Medicare
    beneficiaries. See id. The main provider and the remote location “operate[] as a single
    institution with integrated finances, administration, and organization.” Anna Jacques Hosp., 797
    9
    F.3d at 1158. The combined hospital, known as a “multi-campus hospital,” submits a combined
    Medicare cost report to the Secretary each year. See id. at 1158–59.
    3.    2018 Sole Community Hospital Regulation
    Although not applicable here, in May 2018, CMS proposed an amendment to the SCH
    regulations regarding “the treatment of multicampus hospitals” that apply for SCH status. See
    Medicare Program; Hospital Inpatient Prospective Payment Systems for Acute Care Hospitals
    and the Long-Term Care Hospital Prospective Payment System and Proposed Policy Changes
    and Fiscal Year 2019 Rates, 83 Fed Reg. 20,164, 20,358 (proposed May 7, 2018). According to
    the Notice of Proposed Rulemaking, CMS had “received an increasing number of inquiries
    regarding the treatment of multicampus hospitals as the number of multicampus hospitals has
    grown in recent years.” Id. Recognizing that “the regulations at § 412.92 for sole community
    hospitals (SCHs) . . . do not directly address multicampus hospitals,” CMS “propo[sed] to
    codify . . . the policies for multicampus hospitals that [it had] developed in response to recent
    questions.” Id. Specifically, CMS proposed adopting the following language as one of the
    “[c]riteria for classification” under 
    42 C.F.R. § 412.92
    (a):
    For a hospital with a main campus and one or more remote locations under a
    single provider agreement where services are provided and billed under the
    inpatient hospital prospective payment system and that meets the provider-based
    criteria at § 413.65 of this chapter as a main campus and a remote location of a
    hospital, combined data from the main campus and its remote location(s) are
    required to demonstrate that the criteria specified in paragraphs (a)(1)(i) and (ii)
    of this section are met. For the mileage and rural location criteria in paragraph
    (a) of this section and the mileage, accessibility, and travel time criteria
    specified in paragraphs (a)(1) through (3) of this section, the hospital must
    demonstrate that the main campus and its remote location(s) each independently
    satisfy those requirements.
    10
    83 Fed. Reg. at 20,566 (emphasis added). In other words, CMS proposed that “a main campus of
    a hospital cannot obtain [SCH status] independently or separately from its remote location(s),
    and vice versa.” Id. at 20,358.
    CMS provided two reasons for proposing this regulatory text. First, “each remote
    location of a hospital is included on the main campus’s cost report and shares the same
    [Medicare] provider number.” Id. Put differently, “the main campus and remote location(s)
    would share the same status . . . because the hospital is a single entity with one provider
    agreement.” Id. Second, it would not be “administratively feasible” for CMS to track every
    hospital with remote locations and to “assign different statuses . . . exclusively to the main
    campus or to its remote location.” Id. Nor would such separation be appropriate because
    consideration of both the main and remote campus “is necessary to show that the hospital is
    indeed the sole source of inpatient hospital services reasonably available to individuals in a
    geographic area.” Id. at 20,359.
    After providing an opportunity for public comment, CMS approved the file rule on
    August 17, 2018, and the rule took effect on October 1, 2018. See Medicare Program; Hospital
    Inpatient Prospective Payment Systems for Acute Care Hospitals and the Long-Term Care
    Hospital Prospective Payment System and Policy Changes and Fiscal Year 2019 Rates, 
    83 Fed. Reg. 41,144
     (Aug. 17, 2018). All agree that the new rule does not itself apply retroactively,
    although the Secretary posits that it clarifies what was, in any event, prior existing policy. See
    
    id. at 41
    ,371–72.
    B.     Factual Background
    AnMed Health is an acute-care hospital with two locations in Anderson, South Carolina.
    The main campus, located at 800 North Fant Street, is a “full-service hospital” with 461 beds and
    11
    an emergency department. Administrative Record (“AR”) 8, 75–76; see also AR 76 (“The Fant
    Street campus . . . do[es] basically everything but transplants.”). AnMed describes the North
    Fant Street Campus as “home to AnMed Health’s acute, inpatient services” and states that it
    “includes AnMed Health Medical Center, AnMed Health Heart and Vascular Center, most of the
    system’s support and professional staff, and a number of doctors’ offices along North Fant
    Street.” AR 17–18.
    AnMed’s remote location, known as the AnMed Health Women’s and Children’s
    Hospital or the North Campus, is located 2.61 miles north of the main campus at 2000 East
    Greenville Street. AR 76, 162. The North Campus is a 72-bed facility that lists the following
    services: “adult surgery, inpatient pediatric care, maternity services, [and] joint replacement
    surgery.” AR 17. The North Campus does not have an emergency department; when a patient at
    the North Campus requires emergency services, the patient is transferred to the main campus.
    AR 76. According to AnMed’s website, “[t]he North Campus includes AnMed Health Cancer
    Center, AnMed Health Rehabilitation Hospital and more than 30 doctors’ offices.” AR 18.
    In 2010, AnMed applied for classification as an SCH and sought to establish that it
    satisfied the regulatory criteria for a hospital that is “located between 25 and 35 miles from other
    like hospitals.” AR 199–202 (citing 
    42 C.F.R. § 412.92
    (a)(1)(i)). In a letter to CMS, the MAC
    assigned to AnMed’s region identified “[t]he item of concern” regarding AnMed’s application:
    “the location from which the mileage requirement is determined [when] there are two hospital
    campuses with inpatient services.” AR 201. According to data obtained from Google Maps, the
    main North Fant Street Campus was located more than 25 miles away from “other like
    12
    hospitals,” but the remote North Campus was not. 4 AR 200–01. The MAC thus determined that
    if the distance to “other like hospitals” was measured from the main campus only—as AnMed
    proposed in its application—“then AnMed Health is between 25 and 35 miles from other like
    hospitals.” AR 200. But, if the distance to other like hospitals was “determined from the North
    Campus,” then “the hospital is less than 25 miles from two hospitals.” 
    Id.
     Ultimately, the MAC
    concluded that the distance to other like hospitals should be measured from both campuses and
    recommended to CMS that “the SCH criteria is not met.” AR 201. On December 21, 2010,
    CMS issued a denial letter to AnMed, explaining that AnMed “does not meet federal
    requirements found in 42 CFR 412.92 to be classified as a[n] . . . SCH[]” because “[t]he North
    Campus facility, Women’s & Children Hospital, does not meet [the distance] requirement per
    documentation provided.” AR 198. AnMed did not appeal that determination.
    On December 21, 2016, AnMed again applied for SCH classification. AR 280–354. The
    hospital argued that it satisfied the mileage requirement based on CMS’s regulatory definition of
    “miles.” AR 281 (citing 
    42 C.F.R. § 412.92
    (c)(1)). AnMed maintained that the regulatory
    definition of “miles” does not merely require CMS to measure the “shortest distance . . . over
    improved roads . . . maintained by a local, State, or Federal government entity” and the “paved
    surface” leading up to the hospital, but also specifies the end point for the measurement: “the
    front entrance of the hospital.” 
    Id.
     (citing 
    42 C.F.R. § 412.92
    (c)(1)). According to AnMed, “the
    front entrance of the hospital” refers—in its case—to “[t]he front entrance of AnMed Health [at]
    800 North Fant Street, Anderson SC 29621.” 
    Id.
     AnMed then identified seven like hospitals
    4
    The MAC concluded that the North Campus was 23.8 miles from Palmetto Easley hospital in
    Easley, South Carolina, and 24.4 miles from Greenville Hospital Center in Greenville, South
    Carolina. AR 201. The record contains immaterial variations of these calculations, however.
    See, e.g., AR 45 (stating that the hospitals were 23.3 and 24.9 miles from the North Campus,
    respectively).
    13
    within a 35-mile radius of the main campus, AR 282, and submitted printouts from Google Maps
    showing that each of those seven hospitals was located more than 25 miles from the front
    entrance of the North Fant Street Campus, AR 319–39. AnMed Health did not submit evidence
    regarding the distances between the seven other hospitals and AnMed’s North Campus.
    On July 25, 2017, CMS again denied AnMed Health’s application for SCH classification
    on the ground that “AnMed Health does not meet [the] distance requirement in 42
    CFR 412.92(a)” because “the [North Campus] is less than 25 miles from two other hospitals.”
    AR 355. On August 11, 2017, AnMed requested reconsideration of that determination, arguing
    that the decision to measure the distance to other like hospitals from both of AnMed’s locations
    was inconsistent with the governing regulations. AR 356–358. CMS denied AnMed’s
    reconsideration request, AR 359, and AnMed timely filed an appeal and request for hearing
    before the Board. AR 361–75. For purpose of that appeal, AnMed and the MAC stipulated that
    the “sole justification” for denying AnMed’s request was that AnMed’s remote location was less
    than 25 miles from other “like hospitals” under 
    42 C.F.R. § 412.92
    (a)(1). AR 116.
    On September 4, 2020, the Board issued its decision, concluding that CMS erred in
    applying the SCH distance requirement to both of AnMed’s campuses. AR 40. The Board
    acknowledged that the term “the hospital,” as used in the SCH regulations, “necessarily
    encompasses” both the main North Fant Street Campus and the remote North Campus. AR 45–
    46. But it nonetheless concluded that CMS should have measured the distance necessary to
    qualify for SCH status from the main campus alone. That conclusion was dictated, in the
    Board’s view, by the regulatory definition of “miles,” which “is very specific” that mileage must
    be “determin[ed] . . . by measuring ‘paved surface up to the front entrance of the hospital[,]’ and
    [the regulation] makes no mention of remote locations or multiple front entrances.” AR 46
    14
    (quoting 
    42 C.F.R. § 412.92
    (c)(1) (emphasis added)). The Board continued that if required to
    identify a single “front entrance of the hospital,” that entrance must be located on the main (and
    not the remote) campus. AR 46.
    The Board also considered the regulatory history of § 412.92(c)(1) and commentary
    relating to another rule, which addressed Critical Access Hospitals (“CAHs”). First, the Board
    observed that, when the definition of the term “miles” was added to the SCH regulations, the
    preambles to both the proposed and final rules explained that the new definition was “‘consistent
    with the [Medicare Geographic Classification Review Board (“MGCRB”)] definition of
    mileage.’” AR 46 (quoting FY 2002 IPPS Proposed Rule 
    66 Fed. Reg. 22,645
    , 22,648 (proposed
    May 4, 2001); FY 2002 IPPS Final Rule, 
    66 Fed. Reg. 39,828
    , 39,874–75 (Aug. 1, 2001). This
    mattered because, according to the Board, the “then-existing MGCRB definition of ‘miles’”
    measured the “distance from the hospital . . . based on paved surfaces from the front door of the
    main hospital.” AR 46. 5
    Second, the Board cited a 2007 rulemaking relating to Critical Access Hospitals,
    concluding that, in that rulemaking, “the Secretary made clear that the then-existing § 412.92(a)
    requirements for SCH designation did not address multicampuses.” AR 47. In the CAH
    rulemaking, CMS adopted a requirement that hospitals measure distances from both their main
    campuses and any remote locations when seeking classification as CAHs. 6 See CY 2008 OPPS
    5
    IPPS reimbursement rates are adjusted according to “wage index[es]” that reflect regional
    variations in hospital wage costs. See Palisades Gen. Hosp. Inc. v. Leavitt, 
    426 F.3d 400
    , 401
    (D.C. Cir. 2005). The MGCRB “reviews applications from hospitals seeking geographic
    redesignation to a nearby area in order to use that area’s (higher) wage index.” 
    Id.
     at 402 (citing
    42 U.S.C. § 1395ww(d)(1) and 
    42 C.F.R. §§ 412.230
    –.235).
    6
    CAHs are hospitals that provide certain emergency services in rural areas and are located
    “more than a 35-mile drive . . . from a hospital, or another facility described” in the CAH
    subsection. 42 U.S.C. § 1395i-4(c)(2)(B)(i)(I). As with SCHs, Congress has authorized more
    15
    Proposed Rule, 
    72 Fed. Reg. 42,628
    , 42,807 (proposed Aug. 2, 2007); see also 
    42 C.F.R. § 485.610
    (e)(2) (2008). According to the Board, a Medicare provider operating an SCH
    commented on the CAH proposed rule, “express[ing] concerns regarding the loss of its special
    reimbursement status” and “question[ing] why CMS was treating CAHs differently.” AR 47.
    The Secretary responded that the new distance-based requirement for CAHs was “a statutory
    requirement that reflect[ed] . . . the special status of CAHs (as opposed to other rural entities)
    and should not limit access to care.” 
    Id.
     (quoting CY 2008 OPPS Interim Final Rule, 
    72 Fed. Reg. 66,580
    , 66,880–81 (Nov. 27, 2007)). In the Board’s view, this response signaled that the
    2007 distance-based requirement for CAHs “was not intended to apply to SCHs.” 
    Id.
    Finally, the Board addressed the preamble to the FY 2019 IPPS rule, which added a new
    provision to the SCH regulations specifying that, “[f]or a hospital with a main campus and one or
    more remote locations under a single provider agreement . . . that meets the provider-based
    criteria at § 413.65[,] . . . the hospital must demonstrate that the main campus and its remote
    location(s) each independently satisfy” the mileage requirement. See 
    42 C.F.R. § 412.92
    (a)(4).
    Although the preamble explained that the new provision was added to clarify existing policy, the
    Board seized on the agency’s observations (1) that it had “‘received an increasing number of
    inquiries regarding the treatment of multicampus hospitals as the number of [such] hospitals has
    grown in recent years,’” and (2) that the then-existing regulations did “‘not directly address
    multicampus hospitals.’” AR 47 (quoting 83 Fed. Reg. at 41,369–70). In the Board’s view,
    these observations show that the multicampus rule was not “in place at the time of AnMed’s
    SCH application and that the FY 2019 IPPS rule was not a clarification of long-standing policy
    generous reimbursement rates for these hospitals out of concern for rural access to health care.
    See St. Helena Clear Lake Hosp. v. Becerra, 
    30 F.4th 301
    , 302 (D.C. Cir. 2022).
    16
    as it relates to § 412.92(a) requirements for SCH designation.” AR 47–48 (quoting 83 Fed. Reg.
    at 41,369–70). This mattered, according to the Board, because if the policy adopted in the FY
    2019 IPPS rule was, in fact, a new “substantive policy,” the Supreme Court’s decision in Azar v.
    Allina Health Services, 
    139 S. Ct. 1804
     (2019), makes clear that the rule may not be applied
    retroactively to reporting periods preceding the notice-and-comment rulemaking. AR 48–50.
    On October 30, 2020, the Secretary, acting through the Principal Deputy CMS
    Administrator, reversed the Board’s decision. AR 7. The Secretary first concluded that CMS’s
    determination was “consistent with the plain language of the statute [42 U.S.C.
    § 1395ww(d)(5)(D)(iii)], which defines a SCH[] as a hospital[] that by reason of the absence of
    other like hospitals (as determined by the Secretary), is the sole source of inpatient hospital
    services reasonably available to individuals in a geographic area who are entitled to benefits
    under [Medicare] Part A.” AR 18. Most importantly, the statutory definition of a “hospital”
    “does not distinguish or recognize separate identities for multicampus hospital locations,” AR 18
    n.15 (citing 42 U.S.C. § 1395x(e)), and, “[i]n this case, the Hospital is comprised of two
    locations”—the main North Fant Street Campus and the remote North Campus, AR 18. As a
    result, “[t]he ‘Hospital’ must . . . meet the mileage rule for both campuses in order to qualify as
    an SCH.” AR 18.
    The Secretary was unpersuaded by AnMed’s contention that its North Campus was not a
    “hospital” for purposes of determining SCH status because “it does not operate an Emergency
    Room and serves only a small subset of individuals” and “is not a ‘hospital furnishing short-
    term, acute care.’” AR 18–19. That argument failed, according to the Secretary, because CMS’s
    provider-based status regulation, 
    42 C.F.R. § 413.65
    (a)(2), “recognizes that a ‘Hospital’ includes
    a location that will not independently meet the condition of participation, but is still the site of
    17
    IPPS services for the Hospital, for which payment may be made.” AR 19. As the Secretary
    explained, under the governing regulations, “[b]oth the main location and remote location are the
    ‘Hospital’ and provide the IPPS services under the one provider agreement.” 
    Id.
    The Secretary also disagreed with AnMed’s contention and the Board’s conclusion that
    the SCH regulations (as of the date that AnMed applied for SCH classification in 2016) required
    CMS to measure the distance to other like hospitals from the front entrance of the main campus
    and not from the remote campus. The Secretary explained: “[T]here is no reference to the ‘main
    hospital’ . . . in the text of” § 412.92(c)(1), and the fact that the regulation refers—in the
    singular—to “the hospital” is of no moment, since “there [is] always only one Hospital . . . being
    evaluated[,] even if the Hospital has more than one location or campuses operating under [a
    single] provider agreement.” AR 21 (emphasis added).
    In addition, the Secretary rejected AnMed’s contention and the Board’s conclusion that
    the FY 2019 IPPS Rule represented a change in CMS policy. AR 19. Unlike the Board, the
    Secretary credited CMS’s statements in the Final Rule that it had “proposed to codify in the
    regulations [its] existing policies for multicampus hospitals, and thus [that] these policies have
    been and continue to be in effect.” AR 20 (quoting 83 Fed. Reg. at 41,372). Indeed, as the
    Secretary explained, neither AnMed nor any of the commenters to the FY 2019 IPPS Rule
    submitted any evidence of a “contrary application by CMS of the SCH rules to multicampus
    hospitals.” AR 20 n.19. AnMed itself, moreover, had been rejected for SCH classification in
    2010 “for th[e] same reason” given by CMS in 2016, proving a concrete and apt example of the
    agency’s prior practice. See AR 20.
    Finally, the Secretary dismissed the Board’s reliance on (1) the reference to the MGCRB
    definition of “miles” in the FY 2002 IPPS Rule amending the SCH regulations to include a
    18
    definition of “miles” and (2) the response to the comments submitted to the CAH rule in 2007.
    AR 21–23. Regarding the reference to the MGCRB’s approach to measuring “miles” “when
    considering hospital reclassification applications,” 66 Fed. Reg. at 39,874, the Secretary
    concluded that the Board read too much into the preamble to the FY 2002 IPPS rulemaking,
    noting (as the Board did) that the rulemaking said nothing about multiple campus hospitals and
    noting (as the Board failed to do) that neither the preamble nor the rule said anything about “the
    ‘main hospital.’” AR 21. With respect to CMS’s adoption of a distance requirement for CAHs
    in 2007, the Secretary explained that “[i]t is not evident from [CMS’s] statement that CMS’[s]
    response, referring to CAHs’ special status compared to other rural entities, was addressing or
    even suggesting [that] SCH remote location hospitals would be exempt from the distance
    requirements to retain their status.” AR 22. Noting the differences between the CAH and SCH
    schemes, the Secretary reasoned that “[t]he policy treatment of the various off-site entities under
    the CAH provisions, required due to [changes in the CAH statute], does not address, nor is
    relevant to, SCH determinations.” AR 23.
    AnMed filed this action on December 28, 2020. Dkt. 1. It claims that the Secretary’s
    decision violates the Medicare regulations that were in effect at the relevant time and is “contrary
    to the Medicare statute because it applies a regulation retroactively.” Id. at 3 (Compl. ¶ 7).
    AnMed asks the Court to “reverse the Secretary’s decision and [to] order the Secretary to
    recalculate AnMed’s Medicare payments under the reimbursement methodology applicable to
    SCHs, effective August 25, 2017.” Id.; see also id. at 21–22 (Prayer for Relief).
    AnMed moved for summary judgment on August 16, 2021, Dkt. 16, and the Secretary
    cross-moved for summary judgment on October 22, 2021, Dkt. 18. For the following reasons,
    19
    the Court will GRANT the Secretary’s cross-motion for summary judgment and will DENY
    AnMed’s motion for summary judgment.
    II. LEGAL STANDARD
    The Court’s jurisdiction is premised on the Medicare statute, 42 U.S.C. § 1395oo(f)(1),
    which authorizes judicial review under the same standards applicable under the Administrative
    Procedure Act (“APA”), 
    5 U.S.C. §§ 701
    –706; Humana, Inc. v. Heckler, 
    758 F.2d 696
    , 698–99
    (D.C. Cir. 1985) (“The Medicare Act itself incorporates the standard of review set out in section
    706 of the Administrative Procedure Act.”); Flint v. Azar, 
    464 F. Supp. 3d 1
    , 7 (D.D.C. 2020).
    The Court, accordingly, must consider whether the Secretary “violated the Administrative
    Procedure Act by taking action that is ‘arbitrary, capricious, an abuse of discretion, or otherwise
    not in accordance with law.’” Forsyth Mem’l Hosp., Inc. v. Sebelius, 
    639 F.3d 534
    , 537 (D.C.
    Cir. 2011) (quoting 
    5 U.S.C. § 706
    (2)(A)). This review is “fundamentally deferential.” Fox v.
    Clinton, 
    684 F.3d 67
    , 75 (D.C. Cir. 2012). Nonetheless, the APA requires that “an agency’s
    decreed result be within the scope of its lawful authority” and that “the process by which it
    reaches that result . . . be logical and rational.” Allentown Mack Sales & Serv., Inc. v. NLRB, 
    522 U.S. 359
    , 374 (1998).
    III. ANALYSIS
    According to AnMed, the Secretary’s decision must be set aside for four reasons. First,
    the decision was “not dictated by the Medicare statute” and was “not required for consistency
    with the statute.” Dkt. 16-1 at 29. Second, the decision “is contrary to the plain reading of the
    applicable regulation at the time that AnMed submitted its SCH application.” 
    Id.
     Third, the
    decision “is contrary to the Secretary’s interpretation of that regulation over many years.” 
    Id.
     at
    20
    29–30. Finally, the decision constitutes “improper retroactive rulemaking.” Id. at 30. The Court
    will consider each argument in turn.
    A.     The Medicare Statute
    AnMed’s first contention is not your typical administrative law argument. In a garden-
    variety administrative law case, the plaintiff or petitioner typically argues that the agency has
    exceeded its statutory authority or that its application of the statute is unreasonable. Here, in
    contrast, AnMed starts by arguing that the Secretary has broad authority to implement the SCH
    provision of the Medicare statute. See id. at 31–32. It argues, for example, that Congress
    delegated to the Secretary authority to determine “whether distance must be measured from
    remote locations in establishing . . . eligibility” as a SCH or to decide whether a remote location
    should be treated as part of the hospital for purposes of the SCH program. Id. at 32. More
    succinctly put, AnMed maintains that “the Medicare statute does not address the question at
    issue in this case” and that “Congress left the Secretary to fill in many of the gaps in the statutory
    text authorizing SCHs.” Id. at 38.
    To the extent AnMed contends that the Secretary’s decision must be set aside because the
    Secretary mistakenly believed that Congress tied his hands, depriving him of authority to adopt
    (at least through a rulemaking) AnMed’s preferred rule, AnMed misreads the decision. AnMed
    is correct that the Medicare statute confers broad discretion on the Secretary to implement the
    SCH program in a manner consistent with the statutory objective of providing an enhanced IPPS
    rate for “hospital[s] that, by reason of factors such as isolated location, weather conditions, travel
    conditions, or absence of other hospitals” are “the sole source of inpatient hospital services
    reasonably available to individuals in a geographic area.” § 601(e), 97 Stat. at 158. As the Ninth
    Circuit observed in San Bernardino Mountains Community Hospital District v. Secretary of
    21
    Health and Human Services, 
    63 F.3d 882
    , 886–87 (9th Cir. 1995), the Medicare statute makes
    “clear that Congress intended to delegate to the Secretary the task of outlining and defining the
    criteria for attaining [SCH] status.” See also Clinton Mem’l. Hosp. v. Shalala, 
    10 F.3d 854
    , 857
    (D.C. Cir. 1993) (noting the statute’s “delegation to the Secretary of primary responsibility for
    implementing the SCH definition”).
    The statute provides that a hospital is an SCH if “the Secretary determines [that it] is
    located more than 35 road miles from another hospital,” but it does not specify how the Secretary
    should “determine” whether a hospital meets the 35-mile requirement. 42 U.S.C.
    § 1395ww(d)(5)(D)(iii)(I). The statute also provides general guidance as to how the Secretary
    should determine whether a hospital “is the sole source of inpatient hospital services reasonably
    available to individuals in a geographic area who are entitled to benefits under [Medicare] part
    A,” by including a nonexclusive list of factors “such as the time required for an individual to
    travel to the nearest alternative source of appropriate inpatient care (in accordance with standards
    promulgated by the Secretary), location, weather conditions, travel conditions, or absence of
    other like hospitals (as determined by the Secretary).” Id. § 1395ww(d)(5)(D)(iii)(II). Beyond
    that guidance, however, the question of how to measure the distance between a multicampus
    hospital and other like hospitals is “precisely the type of interstitial question of implementation
    that the statute leaves in the Secretary’s administrative hands.” Anna Jacques Hosp., 797 F.3d at
    1165.
    The Secretary, for his part, agrees that the statute contains a broad delegation of authority
    to implement the SCH program in a reasonable manner, and, indeed, although not applicable to
    this case, the Secretary has promulgated a regulation that speaks directly and clearly to the
    question how to treat “a hospital with a main campus and one or more remote locations under a
    22
    single provider agreement.” See 
    42 C.F.R. § 412.92
    (a)(4). More to the point for present
    purposes, to the extent AnMed contends that the Secretary denied its application for SCH status
    based on the mistaken belief that the Medicare statute admits of no discretion in this regard, it
    misreads the decision; the decision does not conclude that the Secretary is without discretion to
    exclude remote campuses when measuring the distance between “the hospital” and “other like
    hospitals,” 
    42 C.F.R. § 412.92
    (a)–(b). Rather, the Secretary construed CMS’s then-existing
    regulation and concluded, based on the law as it then stood, (1) that a qualifying “hospital” must
    be more than “25 miles . . . from other like hospitals;” (2) that (in the absence of any rule to the
    contrary) the term “hospital,” as used in the SCH regulations, should be given the meaning
    generally assigned to that term in the statute and regulations, AR 18; (3) that the statutory
    definition of a “hospital” “does not distinguish or recognize separate identities for multicampus
    hospital locations,” AR 18 n.15; and (4) that the regulations governing “provider-based status”
    “recognize[] that a ‘Hospital’ includes a location that will not independently meet the condition
    of participation[] but is still the site of IPPS services for the Hospital,” AR 19.
    That syllogism is consistent with the D.C. Circuit’s observation that various provisions of
    the Medicare statute “make clear that a ‘hospital’ can encompass institutes with multiple
    campuses and facilities.” Anna Jacques Hosp., 797 F.3d at 1165. The Secretary’s reasoning,
    moreover, does not imply that CMS is without authority to depart from the default rule and to
    promulgate a rule that measures distance for purposes of the SCH program from only a portion
    of the hospital. But that step, unlike what the Secretary did here, would have required looking
    beyond the text of the then-existing rules and exercising prospective, policymaking authority.
    To the extent that AnMed maintains that the Secretary misconstrued the statute, the Court is
    unpersuaded.
    23
    Although AnMed does not develop the challenge in any detail, it also at least alludes to a
    Chevron Step Two argument, suggesting that the Secretary’s decision is at odds with the purpose
    of the SCH program. At Chevron Step Two, the Court must determine “whether the Secretary
    has provided a reasonable rationale for his policy choice.” Methodist Hosp. of Sacramento v.
    Shalala, 
    38 F.3d 1225
    , 1232 (D.C. Cir. 1994). That inquiry is “concededly narrow,” New
    Lifecare Hospitals of Chester County LLC v. Azar, 
    417 F. Supp. 3d 31
    , 45 (D.D.C. 2019),
    particularly in the Medicare context, where “heightened deference [must be given] to the
    Secretary’s interpretation of [the] ‘complex and highly technical [Medicare] program,”
    Methodist Hospital, 
    38 F.3d at 1229
     (quoting Thomas Jefferson University v. Shalala, 
    512 U.S. 504
    , 512 (1994)).
    Although far from clear, AnMed seems to make two versions of a Chevron Step Two
    argument. It first argues that, to the extent the Secretary believed that he was compelled at
    Chevron Step Two to treat multicampus hospitals, like AnMed, as a single hospital and to
    measure the distance to any “other like hospital” from both the main and remote campuses, the
    Secretary erred. Dkt. 16-1 at 36. As AnMed puts it, Chevron Step Two comes into play only if
    “‘the governing statute, read as a whole, reveal[s] a clear congressional intent regarding the
    relevant question or that the text of the statute and reasonable inferences from it give a clear
    answer.’” 
    Id.
     (quoting Nat’l Env’t Dev. Ass’n’s Clean Air Project v. EPA, 
    891 F.3d 1041
    , 1047
    (D.C. Cir. 2018)). The problem with this version of AnMed’s argument is that the Secretary
    never said that he was compelled, at Chevron Step One or Two, to reject AnMed’s preferred
    rule. He merely concluded that the SCH regulations, as written, referred to the distance to “the
    hospital,” and, based on the statute and regulations, that reference was construed to mean the
    entire hospital, including any remote campus. Notably, AnMed itself concedes that the Secretary
    24
    is entitled to Auer deference in interpreting the SCH regulations, see Dkt. 21 at 8 (citing Kisor v.
    Wilkie, 
    139 S. Ct. 2400
     (2019)), and, here, the Secretary read the term “the hospital” in the SCH
    regulations to include any remote campuses.
    The second version of AnMed’s Chevron Step Two argument posits that AnMed’s
    remote North Campus “serves only a small subset of patients” and “does not provide most
    inpatient hospital services needed by women” and “provides very few inpatient services to men.”
    Dkt. 16-1 at 37. AnMed then argues that “Congress likely did not intend that a [remote] facility
    that is not required [separately] to meet the Medicare Conditions of Participation, does not have
    an emergency department, and treats only a few specialized conditions to be considered a ‘source
    of inpatient hospital services reasonably available to individuals in a geographic area.’” 
    Id.
    (quoting 42 U.S.C. § 1395ww(d)(5)(D)(iii)(II)). To this, AnMed adds, “the legislative history of
    the SCH statute suggests that Congress intended for the Secretary to adopt broad criteria for SCH
    eligibility” and intended to avoid inconsistent, narrow, and restrictive interpretations of the
    governing qualifications. Id. at 37–38.
    In pressing this argument, AnMed disregards the Secretary’s well-reasoned explanation
    for his decision. Beyond the textual rationale explained above, the Secretary noted that “the
    operational origins of [CMS’s] policy” reflect “the legal status of a multicampus hospital,”
    including the fact that a “remote location of a hospital is included on the main campus’s cost
    report and shares the same provider number.” AR 20. This means that the main and remote
    campuses “share the same status . . . because the hospital is single entity with one provider
    agreement.” Id. As a result, if the hospital qualifies for the enhanced SCH Medicare
    reimbursement rates, the main and remote campuses both obtain the benefit. And, as the
    Secretary further explained, “it would not be administratively feasible for CMS and the MACs to
    25
    track every hospital with remote locations within the same [area] and to assign different statuses
    or rural reclassifications exclusively to the main campus or to its remote location.” Id. (quoting
    83 Fed. Reg. at 41,369). In short, because AnMed’s remote North Campus would receive the
    same enhanced SCH rate that its main North Fant Street Campus would receive should AnMed
    qualify for that benefit, and because any effort to treat the North Campus as distinct for this one
    reason would pose unreasonable administrative burdens on CMS, the Secretary was unpersuaded
    by AnMed’s policy arguments. That decision, moreover, was eminently reasonable and easily
    satisfies Chevron Step Two.
    In the end, it is unclear whether AnMed is pressing these statutory arguments because it
    believes the Secretary actually misconstrued or misapplied the Medicare statute or whether, as
    seems more likely, merely to set the stage for its remaining arguments. But, as explained below,
    those arguments fare no better.
    B.     The “Miles” Regulation
    The principal argument that AnMed raised in the administrative process, which it renews
    here, focuses on the definition of the term “miles” contained in the SCH regulations. The
    relevant text provides as follows:
    The term miles means the shortest distance in miles measured over improved
    roads. An improved road for this purpose is any road that is maintained by a
    local, State, or Federal government entity and is available for use by the general
    public. An improved road includes the paved surface up to the front entrance of
    the hospital.
    
    42 C.F.R. § 412.92
    (c)(1). As AnMed reads it, this provision requires CMS to measure distance
    for purposes of the SCH rule from the front door of the main hospital of a multicampus and to
    disregard any remote campuses or facilities. The Court is unpersuaded.
    26
    Much of AnMed’s argument turns on the fact that “[t]he regulation establishing the
    mileage standard is stated in the singular,” referring to “‘the front entrance of the hospital,’ not to
    entrances or hospitals.” Dkt. 16-1 at 39. But, as the Secretary explained, the reference to a
    single hospital is unremarkable, since “there [is] always only one Hospital” for purposes of the
    SCH rule, even if that single “Hospital has more than one location or campus[] operating under
    [the single] provider agreement.” AR 21. Indeed, if anything, the reference to a single hospital
    supports that Secretary’s reasoning, which starts with the premise that “[t]he hospital” must be
    more than 25 miles “from other like hospitals,” see 
    42 C.F.R. § 412.92
    (a)(1) (emphasis added),
    and then observes that when, as here, “the hospital” “is comprised of two campuses that are
    providing IPPS services,” “the hospital” must satisfy the mileage requirement “for both
    campuses in order to qualify as an SCH,” AR 18.
    Nor is the Court persuaded that the reference to “the front entrance of the hospital” means
    the front door of the “main” campus of a multicampus hospital. In AnMed’s view, “[i]t is simply
    nonsensical to suggest that a hospital can have ‘the front entrance’ on two buildings.” Dkt. 16-1
    at 39. But that contention places far too much weight on the use of the singular in a provision
    that merely defines the terms “miles” and “improved roads” and that says nothing about
    multicampus hospitals. Before considering AnMed’s specific argument, it bears note that
    reading a singular reference to include the plural—in a particular context—is far from
    nonsensical. Indeed, in the analogous realm of statutory interpretation, courts are required to
    read a singular reference to include the plural, “unless the context indicates otherwise,” 
    1 U.S.C. § 1
     (“In determining the meaning of any Act of Congress, unless the context indicates
    otherwise[,] words importing the singular include and apply to several . . . things”), and there is
    27
    no reason why that common sense practice should not apply to regulatory interpretation as well,
    at least when warranted by the circumstances.
    For several reasons, the Court is convinced that this is such a case. Most significantly,
    the regulatory language that AnMed seizes upon appears in a provision that says nothing about
    multicampus hospitals and, instead, merely requires the Secretary to measure mileage “over
    improved roads” and then defines “improved road[s]” to include government maintained roads
    “available for use by the general public” and “paved surface[s] up to the front entrance of the
    hospital.” 
    42 C.F.R. § 412.92
    (c)(1). Read in this context, the disputed clause—“up to the front
    entrance of the hospital”—is best understood to address the relevant portions of the road to
    measure, and not whether a multicampus hospital can have more than one front entrance. For
    this reason, AnMed’s ipse dixit assertion that “its front entrance is located at” its main North
    Fant Street Campus, Dtk. 16-1 at 40, misses the point. In defining “miles” and “improved
    roads,” the Secretary said nothing about multicampus hospitals and certainly did not specify, as
    AnMed contends, that only the main campus of a multicampus hospital counts for purposes of
    satisfying the SCH distance requirement. See AR 21 (noting that “there is no reference to the
    ‘main hospital’” in 
    42 C.F.R. § 412.92
    (c)(1)).
    The provision’s regulatory history confirms that its purpose was to define how CMS
    should measure miles, and not how it should decide which location(s) of a hospital must satisfy
    the distance requirements. Prior to 2001, the agency defined “miles” using the existing language
    (with minor grammatical differences) but without the last sentence that refers to the “front
    entrance of the hospital.” See 
    42 C.F.R. § 412.92
    (c)(1) (2000). In 2001, the Secretary
    promulgated a rule adding the “front entrance of the hospital” language to the SCH regulations.
    See FY 2002 IPPS Final Rule, 
    66 Fed. Reg. 39,828
    , 39,874–75 (Aug. 1, 2001). The Secretary
    28
    explained that he “consider[ed] improved roads to include the paved surface up to the front
    entrance of the hospital because this portion of the distance is utilized by the public to access the
    hospital.” 
    Id. at 39,874
    . In other words, the Secretary added “paved surface up to the front
    entrance of the hospital” to the definition of “miles” because that surface is part of a patient’s
    commute to a hospital, and he wanted hospitals to make accurate approximations of patients’
    travel requirements. That consideration, of course, has nothing to do with the proper treatment
    of multicampus hospitals.
    AnMed has a different take on the regulatory history. As the preamble to the FY 2002
    IPPS Final Rule explains, the Secretary amended the definition of “miles” in the SCH
    regulations to clarify that CMS should measure mileage for purposes of the SCH rule over
    “improved roads” because the public uses “the paved surface up to the front entrance . . . to
    access the hospital,” and thus the definition of mileage should include “this portion of the
    distance.” 
    Id.
     AnMed, however, focuses on the next sentence of preamble, which states: “This
    definition provides consistency with the interpretation of the MGCRB when considering hospital
    reclassification applications.” 
    Id.
     That sentence is important, according to AnMed, because
    when “a hospital with more than one campus in the same wage index area submits a request for
    reclassification, the MGCRB measures distance from only the main campus.” Dkt. 16-1 at 41–
    42. From these premises, AnMed then concludes that “[i]n order to reconcile the Secretary’s
    statements that the definition of miles is consistent for purposes of the MGCRB reclassifications
    and SCH designations, the Secretary should have measured distance only from AnMed’s main
    campus when he evaluated AnMed’s SCH application.” Dkt. 16-1 at 42.
    This argument mixes apples and oranges. The fact that the Secretary adopted a definition
    of “mileage” that is consistent with the definition used by “the MGCRB when considering
    29
    hospital reclassification applications,” 66 Fed. Reg. at 39,874, does not mean that he also
    adopted the MGCRB’s procedures relating to the treatment of multicampus hospitals. Those are
    different questions, and all the Court can conclude from the preamble to the FY 2002 IPPS Final
    Rule is that the Secretary intended for the same understanding of “improved roads” to apply for
    purposes of both MGCRB reclassification and SCH status—that is, “improved roads” should
    “include the paved surface up to the front entrance of the hospital because this portion of the
    distance is utilized by the public to access the hospital.” Id. In rejecting AnMed’s (and the
    Board’s) position, the Secretary made just this point, noting that the preamble to the FY 2002
    IPPS Final Rule says nothing about a “main hospital.” AR 21.
    Surprisingly, the only MGCRB definition of “mile” that AnMed cites in its briefs merely
    provides, as does the first portion of the SCH definition, that “the term (road) miles means ‘the
    shortest distance in miles measured over improved roads’” and that “[a]n improved road . . . is
    any road that is maintained by a local, State or Federal government entity and which is available
    for use by the general public.’” Dkt. 16-1 at 41 (quoting MGCRB Interim Final Rule, 
    55 Fed. Reg. 36,754
    , 36,761 (Sept. 6, 1990); MGCRB Final Rule, 
    56 Fed. Reg. 25,458
    , 25,471–72 (June
    4, 1991)). Indeed, at least before this Court, AnMed fails to cite to anything supporting the
    proposition that “the MGCRB measures distance only from the main campus.” 
    Id. at 42
    . The
    Court does not doubt that MGCRB generally considers only the main campus for purposes of
    making reclassification decisions, but, as the Secretary notes, the MGCRB applies an entirely
    different statutory regime. AR 21 n.21.
    The provenance of AnMed’s contention, moreover, casts further doubt on its argument.
    In its Final Position Paper before the Board, AnMed asserted that, “[i]f a hospital with a main
    campus and remote location in the same metropolitan statistical area . . . applies . . . for wage
    30
    index reclassification, the MGCRB considers only the mileage from the front entrance of the
    main campus to determine whether the hospital meets the proximity criteria.” AR 253. AnMed
    then cited to an email chain between its counsel and two CMS employees from January 2018, in
    which one of the CMS employees explains that, as long as both campuses of a multicampus
    hospital are located in the same labor market area, only the main campus needs to satisfy the “15
    mile criteria” for purposes of wage index reclassification to a different Metropolitan Statistical
    Area. AR 376–78. There is no reason to believe that this correspondence—from seventeen
    years after the FY 2002 IPPS Final Rule was promulgated and which says nothing about the
    definition of “mileage”—formed the basis for the contested sentence in the preamble. More
    importantly, there is no evidence that the MGCRB ever defined “mile” or “mileage” to mean
    anything more than the shortest distance over improved roads, including the paved surface up to
    the front of the entrance.
    Finally, any possible doubt regarding the permissibility of the Secretary’s interpretation
    of the definition of “miles” contained in the SCH regulations is put to rest by AnMed’s
    concession that, “[i]f an agency has issued regulations under statutorily delegated authority, a
    reviewing court must analyze the regulation[s] under the standards set for in Kisor v. Wilkie.”
    Dkt. 21 at 8. Here, AnMed merely argues that the definition unambiguously favors its position,
    Dkt. 16-1 at 40, and hints (without developing the argument) that the Secretary’s decision “does
    not reflect fair and considered judgment” and, instead, is “merely [a] convenient litigating
    position,” Dkt. 21 at 9 (internal quotations omitted). None of these contentions advance
    AnMed’s position. For the reasons explained above, even without any deference, the Court is
    persuaded that the Secretary’s reading of the definition of “miles” represents the better view.
    But even if one might plausibly argue that the definition implicitly deals with the question of
    31
    multicampus hospitals, that argument is, at best, plausible and does not provide a basis for the
    Court to reject the Secretary’s (convincing) interpretation of his own regulation. See Kisor, 
    139 S. Ct. at 2415
    ; Christensen v. Harris Cnty., 
    529 U.S. 576
    , 588 (2000); Thomas Jefferson Univ. v.
    Shalala, 
    512 U.S. 504
    , 512 (1994). Nor has AnMed shown that the Secretary’s reading of the
    mileage regulation was unconsidered or unreasonable or that he adopted it merely as a litigation
    expedient.
    The Court, accordingly, rejects AnMed’s contention that the definition of “miles”
    contained in the SCH regulations addresses the question of multicampus hospitals and requires
    CMS to measure the relevant distance from the main campus of a multicampus hospital.
    C.      Prior Interpretations of the SCH Distance Measurement
    Next, AnMed argues that “[t]he Secretary has made numerous statements, and [has] taken
    numerous actions over the span of many years, that contradict his reasons for denying AnMed’s
    SCH application.” Dkt. 16-1 at 40. AnMed’s first example of such contradictory action merely
    repeats AnMed’s contentions that the Secretary adopted the MGCRB’s definition of “miles” for
    purposes of the SCH regulations and that, under that definition, CMS may consider only the
    location of the main campus of a multicampus hospital. For the reasons explained above, that
    argument fails.
    AnMed’s second example fares no better. For this example, AnMed points to statements
    that the Secretary made in the CY 2008 OPPS Final Rule regarding the distance requirements for
    Critical Access Hospital classification. In that rulemaking, the Secretary added a new provision
    to the CAH regulations specifying that, “[i]f a CAH . . . operates an off-campus provider-based
    location . . . including a . . . remote location, . . . that was . . . acquired by the CAH on or after
    January 1, 2008, the CAH can continue to meet the location requirement of . . . this section only
    32
    if the off-campus provider-based location or off-campus distinct part unit is located more than a
    35-mile drive . . . from a hospital or another CAH.” 
    42 C.F.R. § 485.610
    (e)(2); 72 Fed. Reg. at
    66,880–81. As AnMed notes, one commenter “stated that its Medicare designation as a sole
    community hospital has geographic limitations, but that it should not be threatened with the loss
    of its special reimbursement status if it meets community needs by developing provider-based or
    off-campus services” and “questioned why CMS is treating CAHs differently.” Id. at 66,880. In
    response to that comment—and a host of other comments expressing concern about limiting
    access to healthcare services for the residents of their communities—the Secretary responded at
    length, noting among other things that “the [CAH] distance requirement is a statutory
    requirement that reflects the intent of the CAH program to provide hospital-level services in
    essentially small rural communities,” and that the proposed rule “reflects this understanding and
    the special status of CAHs (as opposed to other rural entities) and should not limit access to
    care.” Id. at 66,880–81. According to the Board and AnMed, this comment demonstrates that—
    at least in 2008—the SCH regulations “did not address multicampuses.” AR 47; see also Dkt.
    16-1 at 43-44.
    The Secretary was unpersuaded, explaining that “[t]he Provider incorrectly states that
    [the CY 2008 OPPS Final Rule preamble] specifically suggested that distance rules would not
    apply to the remote location of SCH applicants and that, [if] [the Secretary] was applying such a
    rule to SCHs, [he] would have explicitly stated” that he was doing so. AR 21. Moreover, the
    Secretary continued, it is far from evident that the response to the comment “was addressing or
    even suggesting [that] SCH remote location hospitals would be exempt from the distance
    requirements [needed] to retain their [SCH] status.” AR 22. Instead, the “response recognize[d]
    the special statutory basis for CAHs and the unique situation for CAHs where even the CAH’s
    33
    provider-based clinic(s) . . . and excluded units are considered part of the CAH and are paid the
    same as the CAH.” AR 23. He then concluded that “[t]he policy treatment of the various off-
    site entities under the CAH provisions, required due to CAH statutory changes, does not address,
    nor is relevant to, SCH determinations, and was not properly addressed in” the CY 2008 OPPS
    rulemaking. Id.
    The Court agrees with the Secretary that the Board and AnMed place undue weight on a
    single sentence responding to a comment raised in an unrelated rulemaking. As the Secretary
    explained in the CY 2008 OPPS proposed rule, prior to January 1, 2006, “[s]tates were permitted
    to waive the CAH minimum distance eligibility requirement by certifying that a CAH was a
    [‘]necessary provider[’].” 72 Fed. Reg. at 42,806. Congress amended the CAH statute in 2003,
    however, to eliminate the ability of states to waive the distance criteria through “necessary
    provider” designations after January 1, 2006. See Medicare Prescription Drug, Improvement,
    and Modernization Act of 2003, 
    Pub. L. No. 108-173, § 405
    (h)(1) (2003). Following that
    amendment, the statute now provides only that a hospital shall be designated as a CAH if it is
    “more than a 35-mile drive . . . from a hospital, or another facility described” in the CAH
    subsection. 42 U.S.C. § 1395i-4(c)(2)(B)(i)(I). The agency interpreted the distance
    requirement—now that it is no longer accompanied by the “necessary provider” exemption—as a
    mandatory provision that must apply to all of a hospital’s locations. 72 Fed. Reg. at 42,806.
    The SCH statute is different; it allows hospitals to be classified as SCHs even if they are
    fewer than 35 miles from other hospitals, according to criteria set by the Secretary. See 42
    U.S.C. § 1395ww(d)(5)(D)(iii)(II)–(III). Against this backdrop, the Secretary’s brief response to
    the comment from an SCH in the CY 2008 OPPS rulemaking is best understood merely to clarify
    that the rulemaking focused on “the special status of CAHs”—as opposed to other entities, like
    34
    SCHs—and that the CY 2008 OPPS rulemaking “should not limit access to care.” 72 Fed. Reg.
    at 66,881.
    Moving beyond these examples, AnMed also contends that the Secretary “has had
    numerous opportunities to explain that the distance measurement for SCHs should be taken from
    remote locations[] but has never done so.” Dkt. 16-1 at 48. That is an odd argument. Even
    assuming that the Secretary could have clarified how to treat multicampus hospitals before the
    FY 2019 IPPS Final Rule, he was under no obligation to so, particularly where the SCH
    regulations have long required that “[t]he hospital” be located at least 25 miles “from other like
    hospitals” and the definition of “hospital” has long included remote campuses of a provider-
    based facility. Adopting a clarifying rule is helpful but not a requirement, nor is there any reason
    to conclude that a provider is entitled to reimbursement based on its preferred reading of a rule
    merely because the regulations might have been clearer. It bears mention, moreover, that CMS
    did explain the distance requirement to AnMed in 2010 when AnMed unsuccessfully applied for
    SCH status. See AR 20; see also AR 198–202. AnMed was thus aware of CMS’s position and
    merely “decided to submit [the] second request” so that it could bring this challenge. AR 77
    ([Q]: And can you please explain [why] AnMed decided to submit that second request? [A:] We
    disagreed with the ruling the first time . . . [and] decided to request it again so that we could take
    it to appeal.”).
    Finally, AnMed argues that the Secretary’s “assertion [in the FY 2019 IPPS Final Rule]
    that he [was] merely clarifying his existing policy is at odds with his admissions in the preamble
    to the” rulemaking. Dkt. 16-1 at 49. In particular, AnMed equates language in the preamble
    noting that the rulemaking was prompted by the “increasing number of inquiries [received by
    CMS] regarding the treatment of multicampus hospitals as the number of multicampus hospitals
    35
    has grown in recent years,” 83 Fed. Reg. at 41,369, with an admission by the Secretary “that he
    had not previously adopted [the] requirement [to include remote hospitals when measuring
    distance] and that the Secretary expected that existing SCHs [might] lose their SCH status as a
    result of th[e] regulatory change,” Dkt. 16-1 at 50. That is a non sequitur. The reason to adopt a
    clarifying amendment is to address questions and uncertainty. But that does not mean that the
    rule represented a change in policy.
    The Court, accordingly, rejects AnMed’s contention that the decision at issue in this
    proceeding is inconsistent with prior SCH policy or prior interpretations of the SCH statute or
    regulations.
    D.     The Prohibition on Retroactive Rulemaking
    Finally, AnMed contends that the Secretary engaged in retroactive rulemaking by
    applying the distance criteria that CMS adopted in the FY 2019 IPPS Rule to AnMed’s 2016
    application for SCH classification. “It is well settled that an agency may not promulgate a
    retroactive rule absent express congressional authorization.” Ne. Hosp. Corp. v. Sebelius, 
    657 F.3d 1
    , 13 (D.C. Cir. 2011) (citing Bowen v. Georgetown Univ. Hosp., 
    488 U.S. 204
    , 208
    (1988)). The Medicare statute provides that rules may not be “applied (by extrapolation or
    otherwise) retroactively” unless the Secretary determines that (1) “such retroactive application is
    necessary to comply with statutory requirements” or (2) “failure to apply the change
    retroactively would be contrary to the public interest.” 42 U.S.C. § 1395hh(e)(1)(A). Because
    the Secretary does not contend that either of those exceptions applies here, the Court must set
    aside the Secretary’s decision if it retroactively applied a new rule—that is, 
    42 C.F.R. § 412.92
    (a)(4)—to AnMed’s application for SCH status. See Dkt. 16-1 at 55.
    36
    Had the Secretary applied § 412.92(a)(4) to AnMed’s application, he could have resolved
    the dispute in a single paragraph: All agree that AnMed’s remote North Campus qualifies for
    provider-based status and is located less than 25 miles from another like hospital, and the
    amended regulation provides that multicampus hospitals that qualify for provider-based status
    “must demonstrate that the main campus and its remote location(s) [must] each independently
    satisfy the” distance criteria. 
    42 C.F.R. § 412.92
    (a)(4). And, had he done so, AnMed might well
    have sound basis to challenge the decision as an impermissible retroactive application of a
    “substantive change” in a regulation, interpretative rule, or statement of policy. 42 U.S.C.
    § 1395hh(e)(1)(A). But that is not what the Secretary did. Rather, for all the reasons explained
    above, the Secretary reasonably construed the then-existing rule to require that CMS measure the
    distance from “the hospital,” which the Secretary explained included a remote location that
    qualifies for provider-based status. That reading was consistent with the statute and regulations
    as they existed at that time, and it is consistent with the D.C. Circuit’s observation that “the
    Medicare statute defines ‘hospital’ as an ‘institution’ that provides a number of medical services”
    and, in various provisions, “make[s] clear that a ‘hospital’ can encompass institutions with
    multiple campuses and facilities,” Anna Jacques Hosp., 797 F.3d at 1164–65. Critically, AnMed
    identifies no evidence that the Secretary’s decision effected “a substantive change from the
    agency’s prior regulation or practice” or “altered the past legal consequences of past action.” Ne.
    Hosp. Corp., 
    657 F.3d at 14
     (citations omitted). To the contrary, for all the reasons explained
    above, it was AnMed that sought a change in policy, and the Secretary merely rejected that
    entreaty.
    AnMed relies, in part, on Northeast Hospital Corporation v. Sebelius, 
    657 F.3d 1
     (D.C.
    Cir. 2011). That case concerned the Secretary’s implementation of the “disproportionate share
    37
    hospital” (“DSH”) adjustment to IPPS payments, under which the Secretary pays more for
    services provided by hospitals that “serve[] a significantly disproportionate number of low-
    income patients.” 
    657 F.3d at 3
     (quoting 42 U.S.C. § 1395ww(d)(5)(F)(i)(I)). The amount a
    hospital receives in DSH adjustments depends on the “Medicare fraction,” which is calculated
    according to a formula established in CMS regulations. Id. at 3–4. In Northeast Hospital, the
    plaintiff hospital “claimed it was owed an additional $737,419 in Medicare payments [for 1999–
    2002] as a result of the intermediary’s improper calculation” of the Medicare fraction. Id. at 4.
    The Secretary upheld the intermediary’s calculation based on an interpretation of the Medicare
    statute that had been adopted through notice-and-comment rulemaking in 2004, after the
    payment period at issue. See id. at 5, 14. As here, the Secretary did not explicitly apply the 2004
    rule in her decision, and the Secretary argued that the 2004 rule merely adopted the agency’s
    “longstanding policy.” Id. at 15. Notwithstanding that assertion, the D.C. Circuit concluded that
    the 2004 rule did not codify longstanding policy, and it held that the Secretary’s application of
    the interpretation that “stem[med] from” the 2004 rule could not be applied to the plaintiff
    hospital’s payments for 1999-2002. Id. at 14–17.
    In holding that the Secretary engaged in impermissible retroactive rulemaking, the D.C.
    Circuit relied upon four considerations. First, the court noted that “[i]n two recent [Board]
    hearings, [Medicare] providers submitted evidence based on hundreds of cost reports from
    numerous hospitals that between 1999 and 2004, [and] the Secretary routinely” calculated the
    Medicare fraction according to the plaintiff hospital’s preferred method, and not the method
    codified in the 2004 rule. Id. at 15. Second, the court cited evidence that, prior to 2004, the
    Secretary instructed some hospitals not to submit data that would have been necessary to
    calculate the Medicare fraction according to the 2004 rule. Id. Third, the Secretary conceded
    38
    that she “routinely failed” to follow the purportedly longstanding policy prior to 2004. Id. And
    finally, the court cited statements in the Federal Register characterizing the 2004 rule as a
    “policy change” and an “adopt[ion] of policy.” Id. at 16.
    AnMed’s reliance on Northeast Hospital is misplaced. In that case, substantial evidence
    demonstrated that the 2004 rule constituted a change in the Secretary’s methodology for
    calculating the Medicare fraction, and, on that basis, the D.C. Circuit rejected the Secretary’s
    claim that the 2004 rule represented a codification of “longstanding policy.” Here, in contrast,
    AnMed has offered no such evidence, and, indeed, has failed to identify a single instance in
    which the Secretary declined to consider the location of a remote, provider-based campus of a
    multicampus hospital when measuring distance under the SCH rule. Notably, the only evidence
    in the record regarding a similar decision is the Secretary’s denial of AnMed’s application for
    SCH classification in 2010.
    On the record before it, the Court is unpersuaded that the 2018 rule represented a
    “substantive change” in policy. 42 U.S.C. § 1395hh(e)(1)(A). To be sure, the new regulation is
    “clearer and remove[s] any possible ambiguity” in the preexisting regulations. Baptist Mem’l
    Hosp.-Golden Triangle v. Sebelius, 
    566 F.3d 226
    , 229 (D.C. Cir. 2009). But that alone is
    insufficient to show that the Secretary’s decision was unlawful. See 
    id.
     (“[W]hen [an agency]
    adopts a new clarifying law or rule, it does not necessarily follow that an earlier version did not
    have the same meaning.”).
    The Court, accordingly, will not set the Secretary’s decision aside on the ground that it
    constitutes the retroactive application of a new, substantive rule. 7
    7
    Although AnMed also raises a claim under 42 U.S.C. § 1395hh(a)(2) in its complaint, Dkt. 1 at
    21 (Compl. ¶ 75), it makes only passing reference to this provision in its motion for summary
    39
    CONCLUSION
    For the foregoing reasons, the Court will DENY AnMed’s motion for summary
    judgment, Dkt. 16, and GRANT the Secretary’s cross-motion for summary judgment, Dkt. 18.
    A separate order will issue.
    /s/ Randolph D. Moss
    RANDOLPH D. MOSS
    United States District Judge
    Date: September 15, 2022
    judgment and opposition to defendant’s cross-motion and, as far as the Court can discern, does
    not seek relief on the basis of this provision or the Supreme Court’s decision in Azar v. Allina
    Health Services, 
    139 S. Ct. 1804
     (2019). But, in any event, had AnMed does so, its argument
    would fail for the same reasons discussed above. The Secretary did not “establish[] or change[]”
    a “substantive legal standard governing the scope of benefits,” 139 S. Ct. at 1809, but, rather,
    reasonably construed an existing regulation to condition SCH status on the distance between “the
    hospital”—which includes a remote, provider-based campus—from “other like hospitals,” 
    42 C.F.R. § 412.92
    (a)(1); see also 
    42 U.S.C. § 413.65
    (d) (provider-based status); Anna Jacques
    Hosp., 797 F.3d at 1165 (noting that “‘hospital’ can encompass institutions with multiple
    campuses and facilities”).
    40