	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	1,526	$28,493,143	178,619	76	373
Florida	1,276	$21,360,980	163,737	75	425
New York	1,280	$17,944,243	100,728	50	207
Texas	1,211	$14,374,020	117,775	67	251
New Jersey	618	$11,745,153	69,131	76	326
Pennsylvania	860	$8,701,727	67,796	56	213
Maryland	381	$7,031,240	47,288	80	413
Illinois	703	$6,613,910	60,664	62	240
North Carolina	558	$6,370,901	50,202	62	268
Ohio	708	$6,367,164	54,009	52	222
Georgia	493	$6,166,183	47,327	63	301
Arizona	346	$5,148,432	36,752	65	365
South Carolina	275	$4,615,554	37,526	88	371
Massachusetts	474	$4,094,489	35,255	54	194
Michigan	483	$4,086,430	35,603	50	225

Not listed: 4 billers with an armed-forces or unknown state code (ZZ); they are in the national totals.

Not listed: 2 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 2024.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	1,393	$23,354,037	125,259	57
Los Angeles-Long Beach-Anaheim, CA	549	$10,340,884	67,135	75
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	440	$5,586,154	39,606	66
Washington-Arlington-Alexandria, DC-VA-MD-WV	327	$5,191,126	34,563	67
Chicago-Naperville-Elgin, IL-IN	549	$4,652,858	44,420	62
Miami-Fort Lauderdale-West Palm Beach, FL	335	$4,459,402	32,224	48
Dallas-Fort Worth-Arlington, TX	365	$4,188,119	33,724	65
Phoenix-Mesa-Chandler, AZ	259	$3,987,385	27,613	65
San Francisco-Oakland-Fremont, CA	182	$3,803,851	19,868	75
Atlanta-Sandy Springs-Roswell, GA	286	$3,734,990	26,637	59
Baltimore-Columbia-Towson, MD	189	$3,200,197	22,327	73
Houston-Pasadena-The Woodlands, TX	310	$3,168,828	25,557	56
Boston-Cambridge-Newton, MA-NH	362	$2,893,369	24,765	50
Tampa-St. Petersburg-Clearwater, FL	191	$2,463,821	19,698	72
Detroit-Warren-Dearborn, MI	199	$2,404,601	18,721	64

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 98 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2024.

Specialties billing 43239 nationally

Ambulatory Surgical Center accounts for 59% of payment for 43239 nationally in 2024, across 8 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ambulatory Surgical Center	1,780	10%	$124,021,148	59%	467,744	263
Gastroenterology	12,460	72%	$75,587,899	36%	1,000,185	80
Internal Medicine	869	5.1%	$4,737,984	2.3%	59,993	69
General Surgery	1,836	11%	$4,212,265	2.0%	59,365	32
Hospitalist	24	0.14%	$128,456	0.06%	1,692	71
Family Practice	70	0.41%	$122,224	0.06%	1,582	23
Colorectal Surgery (Proctology)	52	0.30%	$118,107	0.06%	1,709	33
Thoracic Surgery	30	0.17%	$63,458	0.03%	840	28

Not listed: 25 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 2024.

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