	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
California	936	$18,353,255	66,785	46	225
Florida	722	$17,781,798	76,401	61	367
Texas	685	$13,999,737	59,124	54	254
Pennsylvania	409	$7,503,916	31,881	54	211
New York	507	$7,224,778	27,178	32	156
Indiana	250	$6,095,199	29,675	58	475
Arizona	216	$6,080,464	26,447	77	363
Illinois	359	$5,795,567	82,387	49	1,548
Ohio	369	$5,738,670	33,747	48	249
Georgia	264	$5,650,129	25,451	60	252
Washington	255	$5,467,739	22,990	47	333
Virginia	241	$5,346,846	22,653	52	288
Tennessee	235	$5,317,320	39,872	65	599
North Carolina	294	$5,079,314	37,671	49	315
New Jersey	289	$4,937,547	18,514	40	186

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 2024.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	546	$8,220,849	29,494	33
Los Angeles-Long Beach-Anaheim, CA	338	$5,294,183	19,271	41
Dallas-Fort Worth-Arlington, TX	180	$4,483,156	18,747	70
Chicago-Naperville-Elgin, IL-IN	279	$4,240,003	26,424	40
Phoenix-Mesa-Chandler, AZ	126	$4,065,460	17,528	85
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	196	$3,802,511	14,929	55
Boston-Cambridge-Newton, MA-NH	171	$2,644,975	10,677	39
Atlanta-Sandy Springs-Roswell, GA	137	$2,617,334	11,790	57
Washington-Arlington-Alexandria, DC-VA-MD-WV	179	$2,598,381	9,633	40
Tampa-St. Petersburg-Clearwater, FL	107	$2,597,029	11,458	59
Seattle-Tacoma-Bellevue, WA	111	$2,414,533	9,531	46
Houston-Pasadena-The Woodlands, TX	148	$2,414,123	9,834	42
Miami-Fort Lauderdale-West Palm Beach, FL	175	$2,372,173	9,282	35
St. Louis, MO-IL	95	$2,246,969	11,718	54
Kansas City, MO-KS	84	$2,052,024	9,374	65

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 97 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 66821 nationally

Ophthalmology accounts for 71% of payment for 66821 nationally in 2024, across 2 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ophthalmology	8,190	82%	$135,767,546	71%	552,466	67
Ambulatory Surgical Center	1,009	10%	$50,397,422	26%	234,993	233

Not listed: 5 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 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