	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	738	$17,804,570	78,266	62	379
California	954	$17,512,949	64,667	43	197
Texas	695	$13,889,591	59,628	51	275
Pennsylvania	417	$7,651,162	32,821	52	238
New York	515	$7,372,545	27,520	31	138
Illinois	366	$5,987,447	86,271	45	1,436
Ohio	364	$5,766,427	31,166	48	236
Indiana	243	$5,625,012	28,480	55	441
Georgia	268	$5,601,127	27,095	63	258
Arizona	209	$5,539,519	24,883	74	350
Virginia	234	$5,386,329	25,598	57	301
Washington	261	$5,325,515	23,126	49	297
North Carolina	307	$5,054,319	48,110	53	875
New Jersey	290	$4,856,347	18,309	40	207
Tennessee	228	$4,731,686	39,939	61	550

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 2023.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	533	$8,045,576	28,550	33
Los Angeles-Long Beach-Anaheim, CA	345	$5,106,109	18,614	39
Dallas-Fort Worth-Arlington, TX	186	$4,551,505	19,505	66
Chicago-Naperville-Elgin, IL-IN	287	$4,311,812	27,168	39
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	199	$3,756,841	14,771	47
Phoenix-Mesa-Chandler, AZ	127	$3,721,701	16,572	78
Tampa-St. Petersburg-Clearwater, FL	108	$2,713,676	12,181	68
Atlanta-Sandy Springs-Roswell, GA	139	$2,597,970	11,071	56
Washington-Arlington-Alexandria, DC-VA-MD-WV	177	$2,560,915	9,372	35
Boston-Cambridge-Newton, MA-NH	164	$2,551,775	10,400	39
Seattle-Tacoma-Bellevue, WA	116	$2,433,099	10,011	46
Houston-Pasadena-The Woodlands, TX	149	$2,422,304	9,967	40
Miami-Fort Lauderdale-West Palm Beach, FL	177	$2,234,618	8,935	34
St. Louis, MO-IL	94	$2,048,128	11,070	60
Kansas City, MO-KS	82	$1,973,819	9,184	62

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 2023.

Specialties billing 66821 nationally

Ophthalmology accounts for 73% of payment for 66821 nationally in 2023, across 2 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Ophthalmology	8,251	82%	$137,167,549	73%	555,369	67
Ambulatory Surgical Center	1,030	10%	$46,389,489	25%	235,095	228

Not listed: 7 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 2023.

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