	observed	calculated	calculated	calculated	calculated	calculated
2024	3,085	$31,636,616	+6%	1,255,381	40	736
2023	3,039	$29,978,769	-2%	1,189,510	39	766
2022	2,947	$30,532,309	+4%	1,202,063	41	804
2021	2,949	$29,447,923	+12%	1,144,798	43	809
2020	2,988	$26,371,907	first year in data	1,032,203	42	743

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	246	$4,085,785	159,407	87	1,652
Texas	312	$3,579,422	139,010	41	759
Florida	293	$3,525,601	136,905	39	556
Arizona	73	$2,635,404	102,195	56	5,644
New Jersey	66	$2,222,545	86,218	82	4,338
North Carolina	128	$1,978,289	76,782	32	207
New York	246	$1,155,427	44,875	46	650
Tennessee	165	$995,056	38,831	33	477
Georgia	150	$957,609	37,154	32	239
Alabama	121	$898,258	35,012	41	314
Ohio	52	$876,901	34,044	34	1,885
Kansas	36	$602,712	23,402	67	1,441
Massachusetts	27	$587,359	22,768	41	6,551
Pennsylvania	25	$415,785	16,126	95	3,791
Illinois	45	$408,932	15,889	36	503

Not listed: 12 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	274	$3,261,988	126,554	53
Los Angeles-Long Beach-Anaheim, CA	178	$2,413,124	94,523	71
Tampa-St. Petersburg-Clearwater, FL	23	$2,040,501	79,187	32
Dallas-Fort Worth-Arlington, TX	113	$1,384,063	53,758	45
Phoenix-Mesa-Chandler, AZ	34	$1,379,606	53,532	78
Yuma, AZ	13	$1,236,428	47,905	3,792
Houston-Pasadena-The Woodlands, TX	46	$946,252	36,733	45
Austin-Round Rock-San Marcos, TX	25	$913,315	35,439	22
Atlanta-Sandy Springs-Roswell, GA	68	$808,005	31,315	34
Miami-Fort Lauderdale-West Palm Beach, FL	73	$772,048	29,959	50
Birmingham, AL	46	$765,001	29,741	40
Boston-Cambridge-Newton, MA-NH	26	$582,839	22,592	43
Kansas City, MO-KS	28	$531,797	20,642	28
Columbus, OH	17	$491,979	19,098	21
Nashville-Davidson--Murfreesboro--Franklin, TN	26	$472,981	18,401	27

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 55 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 84403 nationally

Clinical Laboratory accounts for 75% of payment for 84403 nationally in 2021, across 13 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Clinical Laboratory	472	16%	$22,097,651	75%	858,567	1,819
Urology	783	27%	$2,079,366	7.1%	81,069	104
Nurse Practitioner	139	4.7%	$1,176,543	4.0%	45,661	328
Internal Medicine	533	18%	$914,925	3.1%	35,634	67
Pathology	40	1.4%	$827,490	2.8%	32,194	805
Family Practice	403	14%	$736,615	2.5%	28,789	71
Endocrinology	186	6.3%	$335,596	1.1%	13,112	70
Medical Oncology	39	1.3%	$257,518	0.87%	10,002	256
Hematology-Oncology	111	3.8%	$227,529	0.77%	8,866	80
Physician Assistant	105	3.6%	$218,460	0.74%	8,496	81
General Practice	20	0.68%	$78,185	0.27%	3,043	152
Obstetrics & Gynecology	27	0.92%	$45,925	0.16%	1,795	66
Cardiology	16	0.54%	$43,033	0.15%	1,672	105

Not listed: 22 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 84403 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