	observed	calculated	calculated	calculated	calculated	calculated
2024	6,683	$395,726,973	+9%	816,970	61	458
2023	6,566	$364,587,265	+7%	749,707	57	410
2022	6,624	$340,870,644	+7%	687,875	53	383
2021	6,635	$319,117,689	+4%	650,350	50	362
2020	6,681	$306,941,068	first year in data	636,031	50	328

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	533	$46,822,054	59,362	63	365
Florida	496	$46,417,830	66,891	60	475
New York	337	$30,177,870	45,300	68	487
Texas	540	$24,129,485	49,167	39	371
Maryland	121	$14,005,633	16,037	87	328
Massachusetts	154	$11,042,942	18,772	56	522
New Jersey	176	$10,987,771	14,690	49	277
Arizona	164	$10,554,965	15,850	51	406
Pennsylvania	255	$8,460,709	23,355	50	297
Illinois	330	$7,961,711	23,477	41	243
Arkansas	77	$6,667,921	12,053	96	485
Alabama	152	$6,602,140	11,456	35	294
Washington	104	$5,509,207	11,421	40	438
Virginia	128	$5,092,165	13,807	61	318
Tennessee	150	$4,885,309	14,560	50	369

Not listed: 3 billers with an armed-forces or unknown state code (AA, XX); 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	310	$31,750,613	44,256	68
Los Angeles-Long Beach-Anaheim, CA	170	$12,174,510	19,027	59
Dallas-Fort Worth-Arlington, TX	170	$9,132,054	18,754	37
Baltimore-Columbia-Towson, MD	62	$8,627,809	10,260	88
Miami-Fort Lauderdale-West Palm Beach, FL	92	$8,585,502	14,779	75
Phoenix-Mesa-Chandler, AZ	117	$7,742,803	12,090	47
Tampa-St. Petersburg-Clearwater, FL	91	$7,464,372	12,966	50
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	111	$7,198,609	12,796	77
San Francisco-Oakland-Fremont, CA	79	$6,988,355	8,143	70
Washington-Arlington-Alexandria, DC-VA-MD-WV	59	$6,872,027	7,553	110
Sacramento-Roseville-Folsom, CA	32	$5,662,330	5,999	119
Boston-Cambridge-Newton, MA-NH	124	$5,383,808	12,651	45
Chicago-Naperville-Elgin, IL-IN	246	$4,940,644	17,074	43
San Diego-Chula Vista-Carlsbad, CA	56	$4,830,320	6,060	55
Jacksonville, FL	56	$4,777,372	5,843	54

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 72 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 78815 nationally

Diagnostic Radiology accounts for 50% of payment for 78815 nationally in 2020, across 9 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Diagnostic Radiology	5,153	77%	$153,310,979	50%	434,298	84
Independent Diagnostic Testing Facility (IDTF)	164	2.5%	$41,277,734	13%	36,180	221
Hematology-Oncology	482	7.2%	$39,138,325	13%	35,054	73
Nuclear Medicine	342	5.1%	$37,917,131	12%	92,637	271
Medical Oncology	199	3.0%	$13,263,939	4.3%	12,413	62
Radiation Oncology	140	2.1%	$12,990,934	4.2%	12,316	88
Internal Medicine	42	0.63%	$3,312,137	1.1%	3,797	90
Interventional Radiology	92	1.4%	$3,116,457	1.0%	6,245	68
Pulmonary Disease	14	0.21%	$131,132	0.04%	244	17

Not listed: 20 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 78815 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