Table 1: Few (1 percent) physicians have formally “opted out” of Medicare, with psychiatrists making up the largest share

NOTE: Analysis excludes pediatricians. Physician counts include active allopathic and osteopathic medicine physicians. Physician count includes the following subspecialties: ¹Pain management. ² Critical care medicine, gastroenterology, hematology, hospice & palliative medicine, infectious disease, nephrology, pulmonary disease, rheumatology. ³ Reproductive endocrinology. ⁴ Gynecological oncology, hematology oncology, medical oncology, surgical oncology. ⁵Occupational medicine. ⁶ Cardiac surgery, colorectal surgery, general surgery, hand surgery, thoracic surgery, vascular surgery. ⁷ Addiction medicine, cosmetic surgery anesthetic medicine, Doctor of Medicine, hospitalist, integrative medicine, undefined physicians, sleep medicine, osteopathic manipulative medicine. SOURCE: KFF analysis of: ¹Physician counts from Redi-Data, Inc, July 2020, using American Medical Association (AMA) Physician Masterfile; ²Centers for Medicare & Medicaid Services Opt-Out Affidavits https://data.cms.gov/Medicare-Enrollment/Opt-Out-Affidavits/7yuw-754z (September 2020).
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