	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	4,818	$23,802,074	-3%	812,667	82	418	0.56
2023	4,868	$24,661,162	-3%	827,246	80	426	0.56
2022	4,937	$25,408,766	-4%	829,651	79	428	0.56
2021	4,949	$26,603,617	+2%	849,065	82	443	0.56
2020	4,912	$26,081,065	first year in data	822,103	82	441	0.56

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
New York	305	$2,863,175	89,227	122	666
California	417	$2,200,541	71,477	86	385
Florida	311	$1,971,050	66,381	86	389
Pennsylvania	257	$1,655,542	50,157	89	369
New Jersey	143	$1,611,307	44,252	96	913
Massachusetts	198	$1,182,913	42,212	111	439
Tennessee	149	$1,102,908	34,147	92	747
Illinois	216	$1,050,088	33,931	85	418
Texas	263	$809,895	29,178	57	362
Maryland	85	$763,773	18,749	89	848
Arizona	107	$608,218	19,792	99	449
North Carolina	153	$572,960	25,845	82	362
Ohio	240	$572,687	26,089	84	283
Virginia	110	$572,411	19,073	100	407
Michigan	157	$536,454	21,184	90	324

Not listed: 2 billers with an armed-forces or unknown state code (AP, ZZ); they are in the national totals.

Not listed: 4 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 2024.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	291	$3,962,111	112,817	130
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	123	$1,111,304	31,286	108
Chicago-Naperville-Elgin, IL-IN	179	$939,333	30,004	86
Los Angeles-Long Beach-Anaheim, CA	134	$897,372	28,182	78
Boston-Cambridge-Newton, MA-NH	136	$867,380	30,683	102
Tampa-St. Petersburg-Clearwater, FL	80	$579,646	25,056	67
Memphis, TN-MS-AR	36	$538,330	14,426	102
Phoenix-Mesa-Chandler, AZ	83	$524,778	16,603	99
Washington-Arlington-Alexandria, DC-VA-MD-WV	82	$524,515	14,402	98
Miami-Fort Lauderdale-West Palm Beach, FL	79	$388,493	12,256	73
San Diego-Chula Vista-Carlsbad, CA	49	$388,080	12,053	84
Oklahoma City, OK	17	$386,989	11,243	143
Baltimore-Columbia-Towson, MD	41	$383,158	9,023	87
Nashville-Davidson--Murfreesboro--Franklin, TN	63	$382,657	12,202	75
Detroit-Warren-Dearborn, MI	66	$322,572	10,975	98

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 86 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2024.

Specialties billing 88112 nationally

Pathology accounts for 66% of payment for 88112 nationally in 2024, across 3 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Pathology	4,425	92%	$15,799,635	66%	581,796	131
Clinical Laboratory	238	4.9%	$7,444,022	31%	212,632	893
Urology	131	2.7%	$508,146	2.1%	16,133	123

Not listed: 13 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 2024.

Top billers of 88112 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