Breast cancer surgery clinicians
CMS lists 5,516 clinicians with a primary specialty of General Surgery or Surgical Oncology who have billed Medicare for at least one mastectomy procedure (details below).
States and territories
# of clinicians performing mastectomies
- Alabama 156
- Alaska 35
- Arizona 92
- Arkansas 61
- California 549
- Colorado 97
- Connecticut 65
- Delaware 12
- District of Columbia 23
- Florida 353
- Georgia 188
- Guam 3
- Hawaii 36
- Idaho 40
- Illinois 206
- Indiana 140
- Iowa 86
- Kansas 71
- Kentucky 101
- Louisiana 99
- Maine 22
- Maryland 83
- Massachusetts 104
- Michigan 163
- Minnesota 134
- Mississippi 90
- Missouri 110
- Montana 27
- Nebraska 50
- Nevada 37
- New Hampshire 29
- New Jersey 127
- New Mexico 35
- New York 294
- North Carolina 173
- North Dakota 28
- Northern Mariana Islands 1
- Ohio 232
- Oklahoma 58
- Oregon 89
- Pennsylvania 194
- Puerto Rico 68
- Rhode Island 14
- South Carolina 95
- South Dakota 23
- Tennessee 169
- Texas 385
- U.S. Virgin Islands 4
- Utah 47
- Vermont 17
- Virginia 133
- Washington 117
- West Virginia 49
- Wisconsin 137
- Wyoming 28
A clinician who practices in more than one state is counted in each state.
Understanding CMS Data
CMS's "Mastectomy" category combines specific billing codes for breast surgery to calculate the number of times each clinician billed Medicare for a "Mastectomy." These include partial removal of the breast (lumpectomy); removal of the whole breast, with or without underarm lymph nodes; breast reconstruction after mastectomy; implant and implant-capsule procedures; breast lift and reduction; placement of a radiation device during surgery; and surgery for enlarged male breast tissue. CMS reports only procedures that clinicians billed to Original Medicare and Medicare Advantage. Therefore, CMS's procedure volume data does not include procedures that clinicians may have performed on patients who have other health care coverage (e.g., commercial insurance, self-pay, or the VA). Billing variation and coding errors can also affect CMS's data. Therefore, the number of procedures that CMS reports for a clinician may be higher or lower than the actual number of mastectomy procedures a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of General Surgery or Surgical Oncology (as reported to Medicare) are presented.
Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).