	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	735	$17,920,069	165,514	89	911
Texas	763	$13,225,909	140,456	89	624
Florida	812	$12,974,669	130,255	70	614
Pennsylvania	601	$8,299,995	87,321	66	600
Illinois	592	$8,000,670	82,442	66	535
New Jersey	397	$6,591,306	61,061	68	560
Massachusetts	479	$6,586,332	66,145	73	444
Georgia	214	$5,172,253	55,310	84	1,158
Washington	237	$5,000,123	52,487	108	837
Maryland	338	$4,961,467	48,069	76	567
New York	428	$4,813,535	44,634	47	391
Virginia	289	$4,618,314	46,779	61	666
Arizona	201	$4,156,125	42,468	93	785
Minnesota	341	$4,079,961	45,179	83	407
Michigan	329	$4,079,246	42,630	53	478

Not listed: 2 billers with an armed-forces or unknown state code (XX); they are in the national totals.

Not listed: 4 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
Los Angeles-Long Beach-Anaheim, CA	321	$9,475,332	88,313	105
New York-Newark-Jersey City, NY-NJ	487	$7,413,776	65,921	58
Chicago-Naperville-Elgin, IL-IN	492	$6,410,139	64,674	64
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	367	$4,900,324	48,772	61
Boston-Cambridge-Newton, MA-NH	297	$4,714,908	47,347	78
Houston-Pasadena-The Woodlands, TX	203	$3,944,890	41,026	107
Seattle-Tacoma-Bellevue, WA	165	$3,708,031	38,534	122
Washington-Arlington-Alexandria, DC-VA-MD-WV	213	$3,438,966	31,881	63
Minneapolis-St. Paul-Bloomington, MN-WI	265	$3,368,256	37,268	86
Dallas-Fort Worth-Arlington, TX	164	$3,217,806	33,652	100
Phoenix-Mesa-Chandler, AZ	141	$3,106,596	31,613	109
Atlanta-Sandy Springs-Roswell, GA	133	$3,046,893	32,282	77
Baltimore-Columbia-Towson, MD	184	$2,903,742	28,514	93
Miami-Fort Lauderdale-West Palm Beach, FL	231	$2,669,039	25,316	68
Tampa-St. Petersburg-Clearwater, FL	146	$2,578,053	26,169	71

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 93 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 99310 nationally

Nurse Practitioner accounts for 49% of payment for 99310 nationally in 2021, across 23 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nurse Practitioner	5,505	52%	$78,135,416	49%	866,908	157
Internal Medicine	1,768	17%	$30,058,877	19%	276,983	157
Family Practice	1,095	10%	$15,034,046	9.5%	142,497	130
Physician Assistant	755	7.2%	$12,189,147	7.7%	134,317	178
Geriatric Medicine	308	2.9%	$3,948,862	2.5%	36,239	118
Hospitalist	146	1.4%	$2,525,679	1.6%	23,719	162
Physical Medicine and Rehabilitation	133	1.3%	$2,355,551	1.5%	21,348	161
Psychiatry	142	1.4%	$1,698,735	1.1%	15,859	112
General Surgery	68	0.65%	$1,625,703	1.0%	14,375	211
Pulmonary Disease	64	0.61%	$1,476,518	0.93%	12,852	201
Cardiology	40	0.38%	$1,020,440	0.65%	8,962	224
General Practice	59	0.56%	$1,001,243	0.63%	9,495	161
Optometry	34	0.32%	$703,399	0.45%	7,065	208
Infectious Disease	35	0.33%	$698,711	0.44%	6,345	181
Nephrology	32	0.31%	$664,113	0.42%	5,939	186

Not listed: 32 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 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