	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	10,031	$190,400,814	+2%	989,295	48	291	3.42
2023	10,087	$187,454,660	+2%	998,616	47	282	3.42
2022	10,077	$184,382,244	-4%	1,009,177	48	300	3.42
2021	10,180	$192,613,647	+14%	1,041,922	47	304	3.42
2020	9,476	$168,827,632	first year in data	863,997	44	277	3.42

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
Florida	726	$19,005,584	83,159	65	394
California	936	$17,243,056	63,400	43	202
Texas	688	$13,888,085	58,933	53	271
Pennsylvania	430	$7,599,538	32,030	45	237
New York	536	$7,395,916	26,683	32	125
Ohio	383	$6,073,774	44,746	46	335
Illinois	369	$6,067,528	93,019	50	1,587
Georgia	280	$5,886,469	29,885	61	255
Indiana	242	$5,855,936	29,593	55	485
Washington	285	$5,573,131	24,681	42	325
Arizona	214	$5,378,155	24,462	72	392
Virginia	243	$5,287,976	22,612	54	294
Tennessee	248	$5,044,749	44,833	58	698
North Carolina	317	$4,971,267	51,483	51	809
Missouri	236	$4,774,891	22,829	50	321

Not listed: 1 billers with an armed-forces or unknown state code (AP); 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 2021.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	557	$7,881,839	26,933	30
Los Angeles-Long Beach-Anaheim, CA	325	$5,184,371	18,562	39
Dallas-Fort Worth-Arlington, TX	182	$4,386,276	18,448	58
Chicago-Naperville-Elgin, IL-IN	271	$4,128,374	29,889	40
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	201	$3,742,476	14,363	42
Phoenix-Mesa-Chandler, AZ	130	$3,533,345	15,848	77
Tampa-St. Petersburg-Clearwater, FL	105	$2,969,624	13,092	68
Atlanta-Sandy Springs-Roswell, GA	147	$2,819,235	11,839	55
Washington-Arlington-Alexandria, DC-VA-MD-WV	172	$2,816,042	10,103	34
Boston-Cambridge-Newton, MA-NH	164	$2,520,196	9,773	35
Seattle-Tacoma-Bellevue, WA	127	$2,445,234	10,302	39
Miami-Fort Lauderdale-West Palm Beach, FL	168	$2,426,802	9,549	37
Houston-Pasadena-The Woodlands, TX	141	$2,276,223	9,199	44
Detroit-Warren-Dearborn, MI	145	$2,096,483	8,419	39
St. Louis, MO-IL	98	$2,067,207	13,941	54

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 98 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2021.

Specialties billing 66821 nationally

Ophthalmology accounts for 75% of payment for 66821 nationally in 2021, across 2 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ophthalmology	8,380	82%	$144,167,020	75%	569,984	68
Ambulatory Surgical Center	1,070	11%	$45,225,570	23%	243,334	227

Not listed: 8 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 2021.

Top billers of 66821 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