	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	8,154	$47,700,328	-4%	237,385	20	76	3.26
2023	8,675	$49,874,389	-4%	258,797	20	79	3.26
2022	9,419	$51,965,549	-10%	293,487	21	83	3.26
2021	10,135	$57,844,508	+8%	324,365	22	86	3.26
2020	9,788	$53,702,661	first year in data	307,810	22	83	3.26

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	804	$5,059,766	26,047	23	83
New York	664	$4,773,450	22,073	21	85
Florida	729	$4,331,815	24,804	22	97
Texas	685	$3,571,625	21,678	23	85
New Jersey	392	$2,711,790	13,359	23	109
Pennsylvania	477	$2,505,607	13,959	19	85
Maryland	265	$2,271,192	12,266	28	146
North Carolina	315	$1,717,815	10,103	23	83
Ohio	396	$1,713,964	10,674	20	63
Illinois	383	$1,647,957	10,070	19	70
Georgia	283	$1,560,369	9,124	22	76
South Carolina	198	$1,480,249	8,733	28	136
Tennessee	258	$1,415,458	8,760	23	83
Michigan	263	$1,258,312	7,456	20	73
Arizona	185	$1,161,851	6,341	23	89

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	768	$5,815,516	26,264	23
Los Angeles-Long Beach-Anaheim, CA	260	$1,592,294	8,264	22
Washington-Arlington-Alexandria, DC-VA-MD-WV	182	$1,354,129	7,006	24
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	250	$1,320,465	7,121	20
Chicago-Naperville-Elgin, IL-IN	257	$1,036,038	6,424	19
Baltimore-Columbia-Towson, MD	131	$987,474	5,572	27
Dallas-Fort Worth-Arlington, TX	169	$798,966	4,578	20
Miami-Fort Lauderdale-West Palm Beach, FL	151	$727,614	4,061	19
Phoenix-Mesa-Chandler, AZ	118	$701,764	3,705	23
Houston-Pasadena-The Woodlands, TX	122	$689,148	4,005	23
Atlanta-Sandy Springs-Roswell, GA	128	$641,859	3,611	20
Detroit-Warren-Dearborn, MI	129	$627,776	3,678	21
Boston-Cambridge-Newton, MA-NH	155	$622,546	3,815	19
San Francisco-Oakland-Fremont, CA	91	$497,002	2,353	20
Las Vegas-Henderson-North Las Vegas, NV	61	$485,119	2,482	28

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 45378 nationally

Gastroenterology accounts for 49% of payment for 45378 nationally in 2020, across 7 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Gastroenterology	6,561	67%	$26,208,283	49%	179,555	27
Ambulatory Surgical Center	1,442	15%	$21,459,304	40%	85,697	59
General Surgery	1,046	11%	$3,219,667	6.0%	23,410	22
Internal Medicine	395	4.0%	$1,572,181	2.9%	10,713	27
Colorectal Surgery (Proctology)	270	2.8%	$998,804	1.9%	6,786	25
Family Practice	29	0.30%	$68,079	0.13%	496	17
General Practice	11	0.11%	$30,206	0.06%	202	18

Not listed: 11 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 45378 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