	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	12,074	$54,753,774	-7%	618,679	26	163	1.92
2023	14,283	$59,082,491	-33%	703,493	25	154	1.92
2022	21,912	$88,125,583	-36%	1,059,539	25	151	1.92
2021	32,989	$138,096,626	-33%	1,667,841	27	157	1.92
2020	59,497	$207,207,145	first year in data	2,763,732	27	142	0.75

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	2,711	$15,690,896	176,607	29	209
Massachusetts	1,955	$7,351,333	89,098	26	147
New York	1,198	$6,826,738	73,043	30	207
Texas	742	$3,147,318	39,072	24	160
Illinois	939	$3,089,645	35,957	24	118
Florida	620	$3,023,899	35,543	27	160
New Jersey	387	$2,114,534	22,948	28	188
Maryland	319	$1,388,438	16,692	25	189
Arizona	382	$1,326,615	17,614	25	110
Michigan	464	$1,240,428	16,881	23	100
Pennsylvania	383	$1,153,347	14,756	24	117
Washington	314	$877,688	10,970	24	91
Virginia	251	$842,504	10,437	24	129
Ohio	379	$835,952	11,693	21	76
Connecticut	185	$827,501	9,054	22	139

Not listed: 5 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 2023.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	1,118	$7,078,850	72,730	30
Los Angeles-Long Beach-Anaheim, CA	1,015	$6,456,480	72,106	32
Boston-Cambridge-Newton, MA-NH	1,573	$5,894,626	70,494	26
Chicago-Naperville-Elgin, IL-IN	878	$2,988,865	34,385	24
San Francisco-Oakland-Fremont, CA	398	$1,726,252	19,657	26
Riverside-San Bernardino-Ontario, CA	169	$1,664,874	18,577	31
Washington-Arlington-Alexandria, DC-VA-MD-WV	269	$1,336,705	14,905	26
Miami-Fort Lauderdale-West Palm Beach, FL	194	$1,146,179	13,027	29
Phoenix-Mesa-Chandler, AZ	255	$945,633	12,355	26
San Diego-Chula Vista-Carlsbad, CA	190	$847,809	9,267	28
Dallas-Fort Worth-Arlington, TX	197	$805,729	9,445	23
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	186	$761,792	9,064	25
Sacramento-Roseville-Folsom, CA	154	$729,829	8,164	24
Detroit-Warren-Dearborn, MI	207	$660,827	8,659	26
San Jose-Sunnyvale-Santa Clara, CA	165	$635,363	6,589	22

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 92 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2023.

Specialties billing 99443 nationally

Internal Medicine accounts for 23% of payment for 99443 nationally in 2023, across 51 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Internal Medicine	2,593	18%	$13,870,722	23%	155,125	60
Nurse Practitioner	2,782	19%	$9,182,852	16%	126,472	45
Family Practice	1,253	8.8%	$5,212,906	8.8%	61,332	49
Psychiatry	701	4.9%	$3,878,382	6.6%	47,981	68
Cardiology	582	4.1%	$3,132,639	5.3%	33,682	58
Physician Assistant	885	6.2%	$2,369,186	4.0%	33,459	38
Hematology-Oncology	577	4.0%	$2,183,203	3.7%	25,739	45
Urology	400	2.8%	$1,473,530	2.5%	16,037	40
Gastroenterology	369	2.6%	$1,453,162	2.5%	16,513	45
Pulmonary Disease	366	2.6%	$1,346,356	2.3%	14,812	40
Neurology	372	2.6%	$1,335,286	2.3%	15,000	40
Endocrinology	356	2.5%	$1,196,577	2.0%	13,967	39
Nephrology	352	2.5%	$1,153,739	2.0%	14,475	41
Anesthesiology	119	0.83%	$970,666	1.6%	10,544	89
Physical Medicine and Rehabilitation	145	1.0%	$778,633	1.3%	8,539	59

Not listed: 19 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 2023.

Top billers of 99443 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