	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	17,191	$209,306,859	+4%	1,596,641	60	271	2.39
2023	17,140	$201,872,979	-5%	1,603,452	61	277	2.39
2022	17,093	$212,795,258	-6%	1,635,009	63	279	2.39
2021	17,240	$225,489,880	+14%	1,714,975	65	294	2.39
2020	16,773	$197,171,247	first year in data	1,531,820	60	266	2.39

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). Data years 2020–2024.

By state

	observed	calculated	calculated	calculated	calculated
California	1,498	$27,132,825	172,750	76	367
Florida	1,244	$24,019,315	179,547	88	470
New York	1,277	$19,986,705	107,340	54	222
Texas	1,189	$15,202,736	124,292	72	273
New Jersey	611	$12,205,566	71,549	83	358
Pennsylvania	886	$9,406,998	72,079	58	227
North Carolina	566	$7,472,740	58,256	66	335
Illinois	660	$7,283,311	65,317	73	274
Maryland	369	$7,249,135	48,982	85	459
Ohio	705	$6,739,474	57,148	55	223
Georgia	488	$6,627,887	50,776	70	298
Arizona	343	$5,428,516	38,212	69	389
Michigan	512	$4,883,582	41,431	55	251
South Carolina	272	$4,864,105	39,516	94	463
Tennessee	359	$4,526,301	38,938	75	298

Not listed: 2 billers with an armed-forces or unknown state code (ZZ); they are in the national totals.

Not listed: 3 states with fewer than 11 billers (small cells).

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). Providers placed by practice address. Data year 2021.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	1,383	$25,193,244	129,626	60
Los Angeles-Long Beach-Anaheim, CA	555	$9,862,256	63,128	71
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	449	$5,805,116	40,461	67
Miami-Fort Lauderdale-West Palm Beach, FL	331	$4,956,051	34,664	56
Chicago-Naperville-Elgin, IL-IN	493	$4,900,356	45,735	74
Washington-Arlington-Alexandria, DC-VA-MD-WV	321	$4,811,772	33,976	69
Dallas-Fort Worth-Arlington, TX	357	$4,300,881	35,123	69
Phoenix-Mesa-Chandler, AZ	238	$4,005,283	27,410	71
Atlanta-Sandy Springs-Roswell, GA	272	$3,815,579	27,601	68
Houston-Pasadena-The Woodlands, TX	291	$3,467,607	27,141	68
San Francisco-Oakland-Fremont, CA	183	$3,367,601	19,309	76
Baltimore-Columbia-Towson, MD	181	$3,360,679	23,332	83
Boston-Cambridge-Newton, MA-NH	351	$3,065,379	25,997	56
Tampa-St. Petersburg-Clearwater, FL	189	$2,972,484	22,802	84
Detroit-Warren-Dearborn, MI	221	$2,718,387	21,668	64

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 100 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2021.

Specialties billing 43239 nationally

Ambulatory Surgical Center accounts for 55% of payment for 43239 nationally in 2021, across 9 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ambulatory Surgical Center	1,790	10%	$125,089,024	55%	494,876	276
Gastroenterology	12,217	71%	$88,802,867	39%	1,078,874	88
General Surgery	2,132	12%	$5,607,080	2.5%	73,456	34
Internal Medicine	813	4.7%	$5,005,943	2.2%	57,213	70
Family Practice	103	0.60%	$199,784	0.09%	2,243	22
Colorectal Surgery (Proctology)	52	0.30%	$124,375	0.06%	1,760	34
Thoracic Surgery	35	0.20%	$98,067	0.04%	1,282	37
General Practice	20	0.12%	$76,178	0.03%	726	36
Hospitalist	15	0.09%	$55,108	0.02%	754	50

Not listed: 23 specialties with fewer than 11 billers (small cells).

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). Provider-level lines (fewer than 11 beneficiaries suppressed by CMS); specialty is the provider type on claims. Data year 2021.

Top billers of 43239 nationally

Named top billers are a Pro figure, and Pro is not available to buy, so this list is not shown to any account. The counts and totals by state, metro area and specialty on this page are free.

Original Medicare Part B fee-for-service only; CMS suppresses provider lines with fewer than 11 beneficiaries. How these figures are computed · Limitations