	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	1,348	$40,718,907	127,504	56	301
Florida	1,107	$31,343,223	112,447	53	388
Texas	1,123	$26,525,548	100,598	53	258
New York	1,068	$19,649,298	62,371	36	161
Pennsylvania	850	$18,824,410	69,133	50	237
North Carolina	548	$17,368,695	63,596	67	348
Illinois	612	$13,758,736	53,804	61	225
Ohio	635	$13,688,657	52,950	51	242
New Jersey	561	$12,175,103	39,993	43	207
Maryland	353	$11,338,543	38,449	69	363
Georgia	452	$11,153,159	40,965	56	298
Washington	375	$10,861,224	38,501	67	278
Massachusetts	438	$9,879,597	38,631	64	225
Indiana	367	$9,056,591	36,451	64	258
Michigan	505	$8,997,719	35,202	42	186

Not listed: 2 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 2022.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	1,152	$23,058,705	70,412	37
Los Angeles-Long Beach-Anaheim, CA	445	$10,498,040	33,757	46
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	425	$10,375,001	35,745	51
Chicago-Naperville-Elgin, IL-IN	457	$9,321,188	37,392	61
Dallas-Fort Worth-Arlington, TX	352	$8,240,419	29,401	46
Washington-Arlington-Alexandria, DC-VA-MD-WV	297	$7,919,517	26,541	53
Boston-Cambridge-Newton, MA-NH	342	$7,578,475	29,256	58
Miami-Fort Lauderdale-West Palm Beach, FL	290	$6,325,415	22,029	41
Atlanta-Sandy Springs-Roswell, GA	266	$6,147,902	21,675	49
San Francisco-Oakland-Fremont, CA	173	$6,014,468	17,033	67
Phoenix-Mesa-Chandler, AZ	233	$5,969,040	20,444	45
Baltimore-Columbia-Towson, MD	170	$5,057,125	17,554	63
Seattle-Tacoma-Bellevue, WA	206	$4,620,497	16,269	57
Indianapolis-Carmel-Greenwood, IN	145	$4,268,940	15,396	66
Houston-Pasadena-The Woodlands, TX	273	$4,204,508	16,008	41

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 2022.

Specialties billing 45385 nationally

Ambulatory Surgical Center accounts for 50% of payment for 45385 nationally in 2022, across 8 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ambulatory Surgical Center	1,750	11%	$192,517,959	50%	465,745	266
Gastroenterology	11,220	71%	$166,700,721	44%	826,769	74
Internal Medicine	706	4.4%	$8,612,765	2.3%	42,362	60
General Surgery	1,500	9.4%	$8,532,936	2.2%	45,188	30
Colorectal Surgery (Proctology)	555	3.5%	$3,838,680	1.0%	19,785	36
Family Practice	112	0.70%	$559,098	0.15%	2,901	26
Hospitalist	16	0.10%	$145,044	0.04%	692	43
General Practice	13	0.08%	$120,139	0.03%	574	44

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 2022.

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