(a) Physicians, non-physician practitioners, physician and non-physician practitioner organizations, ambulance suppliers, and opioid treatment programs may retrospectively bill for services when the physician, non-physician practitioner, physician or non-physician organization, ambulance supplier, or opioid treatment program has met all program requirements, including State licensure requirements, and services were provided at the enrolled practice location for up to—

(1) Thirty days prior to their effective date if circumstances precluded enrollment in advance of providing services to Medicare beneficiaries; or

(2) Ninety days prior to their effective date if a Presidentially-declared disaster under the Robert T. Stafford Disaster Relief and Emergency Assistance Act, 42 U.S.C. 5121-5206 (Stafford Act) precluded enrollment in advance of providing services to Medicare beneficiaries.

(b) [Reserved]

[79 FR 72531, Dec. 5, 2014, as amended at 84 FR 63203, Nov. 15, 2019]