	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	13,634	$225,517,156	+10%	2,124,063	71	544	2.80
2023	12,486	$204,627,759	+20%	1,899,369	69	537	2.80
2022	11,116	$170,816,263	+8%	1,816,461	73	595	2.35
2021	10,489	$157,980,542	+1%	1,628,637	70	573	2.35
2020	10,266	$155,743,177	first year in data	1,589,034	68	579	2.35

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	838	$26,137,975	216,798	89	1,104
Florida	955	$18,365,418	168,359	80	584
Texas	855	$16,223,404	154,852	82	714
Pennsylvania	781	$10,771,493	101,591	60	490
New Jersey	567	$10,070,546	86,303	68	561
Illinois	624	$9,334,107	85,129	67	447
Massachusetts	511	$7,856,703	71,922	76	460
Maryland	383	$7,359,806	64,454	77	614
New York	582	$7,347,724	62,908	48	398
Virginia	389	$5,504,148	51,199	67	393
Colorado	255	$5,497,435	51,224	93	707
Arizona	240	$5,435,329	50,116	83	689
North Carolina	474	$4,974,515	49,471	54	373
Washington	259	$4,770,913	44,484	82	716
South Carolina	274	$4,707,425	47,530	82	613

Not listed: 4 billers with an armed-forces or unknown state code (AE, AP, XX); 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 2023.

Top metro areas

	observed	calculated	calculated	calculated
Los Angeles-Long Beach-Anaheim, CA	370	$12,283,044	101,555	94
New York-Newark-Jersey City, NY-NJ	656	$10,934,680	89,876	55
Chicago-Naperville-Elgin, IL-IN	534	$8,065,248	72,908	67
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	497	$7,461,434	67,488	71
Boston-Cambridge-Newton, MA-NH	336	$5,515,287	50,752	80
Washington-Arlington-Alexandria, DC-VA-MD-WV	272	$5,037,717	43,283	78
Denver-Aurora-Centennial, CO	203	$4,668,416	43,214	97
Houston-Pasadena-The Woodlands, TX	204	$4,362,755	41,299	89
Baltimore-Columbia-Towson, MD	205	$4,102,678	36,354	85
Miami-Fort Lauderdale-West Palm Beach, FL	230	$3,523,541	30,890	73
Riverside-San Bernardino-Ontario, CA	62	$3,475,548	29,041	114
Seattle-Tacoma-Bellevue, WA	164	$3,356,512	30,977	95
Tampa-St. Petersburg-Clearwater, FL	175	$3,329,070	30,761	81
Phoenix-Mesa-Chandler, AZ	161	$3,272,308	30,488	80
Minneapolis-St. Paul-Bloomington, MN-WI	260	$3,214,339	32,088	74

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 95 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 99310 nationally

Nurse Practitioner accounts for 53% of payment for 99310 nationally in 2023, across 20 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nurse Practitioner	7,132	57%	$108,016,603	53%	1,075,516	151
Internal Medicine	1,903	15%	$36,447,198	18%	301,698	159
Family Practice	1,133	9.1%	$18,041,416	8.8%	152,955	135
Physician Assistant	900	7.2%	$14,908,362	7.3%	146,936	163
Geriatric Medicine	318	2.5%	$4,333,665	2.1%	35,182	111
Hospitalist	170	1.4%	$2,911,327	1.4%	24,455	144
Pulmonary Disease	81	0.65%	$2,530,766	1.2%	20,033	247
Physical Medicine and Rehabilitation	157	1.3%	$2,476,113	1.2%	19,949	127
General Surgery	71	0.57%	$2,399,574	1.2%	18,966	267
General Practice	72	0.58%	$1,612,352	0.79%	13,489	187
Psychiatry	118	0.95%	$1,530,080	0.75%	12,723	108
Infectious Disease	45	0.36%	$1,363,209	0.67%	10,843	241
Emergency Medicine	60	0.48%	$1,024,962	0.50%	8,749	146
Cardiology	28	0.22%	$662,628	0.32%	5,108	182
Critical Care (Intensivists)	15	0.12%	$637,202	0.31%	4,949	330

Not listed: 36 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 99310 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