	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	5,559	$32,293,932	+4%	682,151	58	275	0.85
2023	5,330	$31,074,472	+6%	641,727	58	271	0.85
2022	5,186	$29,316,664	+3%	603,514	56	265	0.85
2021	5,029	$28,558,471	+11%	579,896	57	264	0.85
2020	4,647	$25,819,971	first year in data	508,338	54	245	0.85

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
Arizona	115	$6,634,663	98,196	78	576
California	586	$5,507,136	96,551	75	373
New York	422	$2,174,641	45,917	60	332
Illinois	260	$2,000,774	35,604	59	260
Florida	297	$1,787,784	39,228	63	361
Texas	374	$1,751,942	41,662	57	264
Massachusetts	258	$1,319,473	29,342	58	254
New Jersey	128	$895,796	16,378	70	392
Pennsylvania	282	$713,554	21,417	51	192
Washington	127	$594,127	13,780	65	297
Tennessee	136	$548,442	12,689	55	333
Ohio	231	$534,177	16,361	58	156
Maryland	89	$502,221	10,390	57	389
Virginia	122	$457,786	12,942	89	242
North Carolina	126	$440,632	11,735	55	336

Not listed: 1 billers with an armed-forces or unknown state code (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
Phoenix-Mesa-Chandler, AZ	84	$6,429,709	93,709	78
Los Angeles-Long Beach-Anaheim, CA	224	$3,020,215	49,648	77
New York-Newark-Jersey City, NY-NJ	405	$2,677,308	52,042	67
Chicago-Naperville-Elgin, IL-IN	245	$2,013,075	36,003	61
Boston-Cambridge-Newton, MA-NH	199	$1,194,541	25,433	59
Dallas-Fort Worth-Arlington, TX	104	$1,024,514	20,805	60
San Francisco-Oakland-Fremont, CA	80	$589,908	10,491	89
Cape Coral-Fort Myers, FL	17	$508,135	9,861	150
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	155	$435,680	12,920	53
San Diego-Chula Vista-Carlsbad, CA	50	$363,089	6,701	72
Houston-Pasadena-The Woodlands, TX	155	$358,219	10,430	50
Miami-Fort Lauderdale-West Palm Beach, FL	84	$356,092	9,501	65
Baltimore-Columbia-Towson, MD	60	$338,416	7,077	56
San Jose-Sunnyvale-Santa Clara, CA	72	$299,077	6,818	66
Nashville-Davidson--Murfreesboro--Franklin, TN	73	$284,772	6,887	51

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 82 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 88360 nationally

Pathology accounts for 53% of payment for 88360 nationally in 2023, across 3 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Pathology	5,099	96%	$16,343,009	53%	432,939	85
Clinical Laboratory	194	3.6%	$13,718,494	44%	198,318	1,022
Dermatology	12	0.23%	$882,263	2.8%	8,334	695

Not listed: 10 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 88360 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