	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	110	$6,237,673	92,220	82	371
California	553	$4,613,751	83,304	71	330
New York	448	$2,275,687	46,481	51	316
Texas	364	$1,976,730	44,394	57	305
Illinois	263	$1,682,457	31,595	61	238
Florida	277	$1,523,279	33,604	63	344
Massachusetts	246	$1,319,186	26,927	55	186
New Jersey	121	$714,641	13,340	61	290
Pennsylvania	265	$674,740	20,015	47	196
Washington	119	$581,351	12,949	64	230
Tennessee	135	$580,826	13,041	54	308
Ohio	227	$513,757	15,366	54	154
Virginia	117	$506,174	13,834	82	306
Maryland	87	$489,213	9,961	61	364
North Carolina	111	$478,523	11,896	68	318

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 2022.

Top metro areas

	observed	calculated	calculated	calculated
Phoenix-Mesa-Chandler, AZ	82	$6,058,957	88,771	79
Los Angeles-Long Beach-Anaheim, CA	210	$2,732,954	45,752	77
New York-Newark-Jersey City, NY-NJ	418	$2,579,726	49,049	54
Chicago-Naperville-Elgin, IL-IN	234	$1,658,889	30,916	64
Dallas-Fort Worth-Arlington, TX	104	$1,217,247	23,315	62
Boston-Cambridge-Newton, MA-NH	184	$1,191,381	23,153	56
Cape Coral-Fort Myers, FL	17	$429,555	8,026	135
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	142	$383,275	11,136	51
Houston-Pasadena-The Woodlands, TX	151	$376,124	10,832	50
San Francisco-Oakland-Fremont, CA	81	$362,286	7,750	75
Nashville-Davidson--Murfreesboro--Franklin, TN	76	$345,275	8,074	63
Miami-Fort Lauderdale-West Palm Beach, FL	70	$320,425	8,332	73
Washington-Arlington-Alexandria, DC-VA-MD-WV	68	$282,623	6,491	63
San Jose-Sunnyvale-Santa Clara, CA	65	$280,466	5,998	60
Seattle-Tacoma-Bellevue, WA	68	$274,090	6,635	77

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 79 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 88360 nationally

Pathology accounts for 53% of payment for 88360 nationally in 2022, across 3 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Pathology	4,958	96%	$15,530,668	53%	409,667	83
Clinical Laboratory	190	3.7%	$13,032,914	44%	186,057	979
Dermatology	11	0.21%	$625,366	2.1%	5,752	523

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 2022.

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