	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	1,260	$28,883,131	91,744	42	212
Florida	1,032	$24,786,618	90,626	47	297
Texas	1,008	$20,005,495	76,680	44	226
North Carolina	503	$14,424,173	53,829	65	293
Pennsylvania	785	$14,063,097	52,201	42	203
New York	918	$13,361,152	43,652	31	136
Ohio	614	$10,983,734	43,183	45	206
Illinois	562	$10,275,222	40,124	49	173
Georgia	413	$8,651,688	32,445	46	248
New Jersey	513	$8,626,167	28,247	33	180
Washington	361	$8,208,937	29,516	50	253
Maryland	325	$7,849,923	27,142	50	290
South Carolina	248	$7,295,399	28,664	72	361
Indiana	349	$7,286,960	29,662	50	233
Michigan	462	$7,161,771	27,764	36	189

Not listed: 1 billers with an armed-forces or unknown state code (ZZ); 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 2020.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	989	$15,485,434	47,786	30
Los Angeles-Long Beach-Anaheim, CA	421	$7,198,997	23,481	35
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	397	$7,144,463	24,825	37
Chicago-Naperville-Elgin, IL-IN	422	$6,413,991	25,612	46
Dallas-Fort Worth-Arlington, TX	329	$6,303,737	22,923	40
Boston-Cambridge-Newton, MA-NH	304	$4,862,539	18,886	42
Atlanta-Sandy Springs-Roswell, GA	234	$4,484,605	16,047	40
Washington-Arlington-Alexandria, DC-VA-MD-WV	262	$4,451,537	15,663	38
Phoenix-Mesa-Chandler, AZ	199	$4,337,024	15,184	38
Miami-Fort Lauderdale-West Palm Beach, FL	254	$4,212,945	14,826	32
Baltimore-Columbia-Towson, MD	160	$4,024,288	14,065	56
San Francisco-Oakland-Fremont, CA	155	$3,901,646	11,064	52
Seattle-Tacoma-Bellevue, WA	195	$3,299,776	11,805	41
Indianapolis-Carmel-Greenwood, IN	137	$3,268,351	11,900	50
Charlotte-Concord-Gastonia, NC-SC	114	$3,148,396	11,568	72

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 98 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2020.

Specialties billing 45385 nationally

Ambulatory Surgical Center accounts for 48% of payment for 45385 nationally in 2020, across 7 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ambulatory Surgical Center	1,731	12%	$140,713,542	48%	358,678	207
Gastroenterology	10,490	71%	$133,150,632	46%	643,032	61
General Surgery	1,314	8.9%	$6,986,649	2.4%	35,666	27
Internal Medicine	599	4.1%	$6,477,829	2.2%	31,053	52
Colorectal Surgery (Proctology)	484	3.3%	$3,084,600	1.1%	15,598	32
Family Practice	92	0.62%	$464,283	0.16%	2,240	24
General Practice	11	0.07%	$102,386	0.04%	462	42

Not listed: 16 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 2020.

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