	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	229	$4,145,737	163,715	83	1,840
Texas	323	$3,757,356	147,828	38	794
Arizona	77	$3,636,735	143,085	40	13,372
Florida	249	$3,499,639	137,476	39	674
New Jersey	98	$2,373,185	93,260	57	1,744
North Carolina	132	$1,971,500	77,491	31	199
New York	214	$1,164,974	45,801	47	756
Tennessee	166	$1,051,484	41,541	29	473
Ohio	57	$918,383	36,201	32	1,993
Alabama	136	$909,696	35,889	40	311
Georgia	149	$764,430	30,041	30	142
Kansas	38	$642,417	25,262	67	1,199
Massachusetts	37	$583,361	22,916	54	6,243
Illinois	42	$407,617	16,044	41	496
Oklahoma	73	$394,908	15,562	38	591

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 2022.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	271	$3,403,102	133,718	52
Los Angeles-Long Beach-Anaheim, CA	161	$2,466,129	97,739	76
Tampa-St. Petersburg-Clearwater, FL	16	$2,044,605	80,290	43
Dallas-Fort Worth-Arlington, TX	116	$1,454,707	57,227	45
Phoenix-Mesa-Chandler, AZ	37	$1,420,432	55,798	70
Houston-Pasadena-The Woodlands, TX	54	$998,319	39,235	28
Austin-Round Rock-San Marcos, TX	26	$970,273	38,177	26
Birmingham, AL	57	$779,154	30,672	43
Miami-Fort Lauderdale-West Palm Beach, FL	66	$756,200	29,691	52
Atlanta-Sandy Springs-Roswell, GA	77	$638,345	25,058	31
Kansas City, MO-KS	33	$593,558	23,342	33
Boston-Cambridge-Newton, MA-NH	28	$563,634	22,136	78
Nashville-Davidson--Murfreesboro--Franklin, TN	22	$511,801	20,155	44
Columbus, OH	16	$505,290	19,855	24
Chicago-Naperville-Elgin, IL-IN	34	$395,861	15,584	43

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 56 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2022.

Specialties billing 84403 nationally

Clinical Laboratory accounts for 74% of payment for 84403 nationally in 2022, across 14 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Clinical Laboratory	473	16%	$22,522,071	74%	886,142	1,873
Urology	796	27%	$2,010,150	6.6%	79,327	100
Nurse Practitioner	169	5.7%	$1,331,832	4.4%	52,417	310
Physician Assistant	121	4.1%	$906,218	3.0%	35,711	295
Pathology	43	1.5%	$863,236	2.8%	34,051	792
Internal Medicine	509	17%	$823,130	2.7%	32,467	64
Family Practice	393	13%	$557,457	1.8%	22,100	56
General Practice	15	0.51%	$403,292	1.3%	15,866	1,058
Endocrinology	184	6.2%	$307,293	1.0%	12,160	66
Hematology-Oncology	107	3.6%	$201,942	0.66%	7,954	74
Medical Oncology	34	1.2%	$123,144	0.40%	4,847	143
Obstetrics & Gynecology	24	0.81%	$49,600	0.16%	1,952	81
Cardiology	14	0.48%	$37,766	0.12%	1,486	106
Radiation Oncology	14	0.48%	$20,946	0.07%	823	59

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 2022.

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