Supporting Medicare Providers Act of 2021

This bill extends temporary increases in Medicare payments for physicians' services through 2022, instead of ending at the end of 2021. It directly affects Medicare providers (like doctors and clinics) who receive these payments under the Medicare program. The key change modifies the Social Security Act to extend the payment adjustment period from ending January 1, 2022, to January 1, 2023, ensuring continued funding for physician services during 2022. The bill does not alter payment rates or create new programs, only extends the existing temporary increase.