	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	4,283	$22,318,231	+2%	342,543	50	216	1.39
2023	4,276	$21,796,575	+3%	325,855	47	207	1.39
2022	4,250	$21,243,088	-3%	309,937	44	197	1.39
2021	4,294	$21,789,570	+6%	310,706	43	199	1.39
2020	4,188	$20,579,775	first year in data	288,601	41	187	1.39

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	354	$3,416,409	37,847	48	275
New York	252	$3,014,514	30,712	55	231
Florida	281	$1,314,460	20,384	47	200
Texas	291	$1,166,216	19,210	39	232
Pennsylvania	218	$860,870	15,794	43	184
Illinois	211	$812,809	14,784	53	184
Massachusetts	162	$666,187	11,273	49	178
Ohio	207	$602,145	10,815	39	133
Tennessee	123	$592,871	8,888	39	242
North Carolina	120	$591,777	10,395	70	212
New Jersey	107	$563,445	8,145	53	176
Maryland	81	$486,005	7,664	60	292
Michigan	144	$471,272	8,700	48	155
Arizona	86	$466,730	6,780	54	207
Indiana	91	$450,483	7,698	61	188

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 2023.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	226	$3,116,931	31,037	60
San Francisco-Oakland-Fremont, CA	53	$1,605,615	14,630	52
Chicago-Naperville-Elgin, IL-IN	170	$723,839	13,107	60
Los Angeles-Long Beach-Anaheim, CA	125	$604,893	8,080	42
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	112	$561,477	9,918	60
Boston-Cambridge-Newton, MA-NH	119	$484,861	8,009	50
Houston-Pasadena-The Woodlands, TX	80	$428,190	7,588	43
Washington-Arlington-Alexandria, DC-VA-MD-WV	51	$411,547	5,118	65
Phoenix-Mesa-Chandler, AZ	61	$333,948	5,020	65
Baltimore-Columbia-Towson, MD	49	$285,604	4,986	60
Atlanta-Sandy Springs-Roswell, GA	61	$284,408	4,235	52
Tampa-St. Petersburg-Clearwater, FL	66	$279,388	4,705	44
Nashville-Davidson--Murfreesboro--Franklin, TN	56	$273,327	4,384	47
San Jose-Sunnyvale-Santa Clara, CA	31	$262,610	3,395	52
Sacramento-Roseville-Folsom, CA	21	$257,710	2,867	85

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 83 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 88173 nationally

Pathology accounts for 76% of payment for 88173 nationally in 2023, across 2 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Pathology	4,079	95%	$16,610,760	76%	277,457	68
Clinical Laboratory	184	4.3%	$5,149,311	24%	47,886	260

Not listed: 9 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 88173 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