	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	16,464	$456,555,338	+7%	1,528,359	56	273	4.57
2023	16,310	$426,638,634	+12%	1,487,316	55	269	4.57
2022	15,913	$381,492,875	+5%	1,406,150	53	262	4.57
2021	15,699	$365,003,434	+25%	1,341,942	50	254	4.57
2020	14,759	$291,403,814	first year in data	1,088,627	44	219	4.57

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	1,407	$47,698,137	140,122	59	294
Florida	1,135	$35,178,757	119,576	55	383
Texas	1,129	$29,796,404	105,085	53	258
New York	1,103	$21,446,119	66,486	38	168
Pennsylvania	860	$20,877,616	72,640	49	247
North Carolina	557	$18,621,001	64,686	68	322
Ohio	674	$15,456,886	56,792	54	253
Illinois	635	$14,879,655	55,616	60	212
New Jersey	562	$14,276,460	44,237	50	231
Maryland	359	$12,796,931	40,890	75	373
Georgia	469	$12,492,792	43,031	55	304
Washington	375	$11,612,274	39,193	72	273
Massachusetts	463	$11,030,575	41,460	62	249
Indiana	374	$9,896,596	37,735	60	271
South Carolina	267	$9,843,494	36,436	85	427

Not listed: 4 billers with an armed-forces or unknown state code (AP, ZZ); they are in the national totals.

Not listed: 2 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	1,174	$26,214,190	77,551	40
Los Angeles-Long Beach-Anaheim, CA	483	$12,513,085	38,216	50
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	437	$11,781,100	38,370	51
Chicago-Naperville-Elgin, IL-IN	478	$10,274,186	39,513	61
Dallas-Fort Worth-Arlington, TX	362	$9,454,893	31,202	49
Washington-Arlington-Alexandria, DC-VA-MD-WV	311	$9,323,669	29,658	56
Boston-Cambridge-Newton, MA-NH	360	$8,508,825	31,533	60
Atlanta-Sandy Springs-Roswell, GA	278	$7,251,158	23,746	50
Phoenix-Mesa-Chandler, AZ	254	$7,174,777	23,228	47
Miami-Fort Lauderdale-West Palm Beach, FL	293	$7,132,306	23,288	38
San Francisco-Oakland-Fremont, CA	174	$6,424,184	16,589	63
Baltimore-Columbia-Towson, MD	169	$5,889,071	19,281	75
Seattle-Tacoma-Bellevue, WA	203	$5,148,457	17,273	62
Indianapolis-Carmel-Greenwood, IN	157	$4,723,175	16,131	63
Houston-Pasadena-The Woodlands, TX	276	$4,656,890	16,796	43

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 100 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 45385 nationally

Ambulatory Surgical Center accounts for 52% of payment for 45385 nationally in 2023, across 8 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ambulatory Surgical Center	1,789	11%	$223,133,262	52%	493,121	276
Gastroenterology	11,430	70%	$178,886,069	42%	870,904	76
Internal Medicine	761	4.7%	$9,773,056	2.3%	47,425	62
General Surgery	1,543	9.5%	$9,138,761	2.1%	47,488	31
Colorectal Surgery (Proctology)	602	3.7%	$4,333,830	1.0%	21,764	36
Family Practice	114	0.70%	$621,853	0.15%	3,091	27
Hospitalist	19	0.12%	$222,256	0.05%	1,028	54
General Practice	11	0.07%	$110,861	0.03%	525	48

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 45385 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