	observed	calculated	calculated	calculated	calculated	calculated	reported
2023	10		fewer than 11 billers: figures not shown				0.00
2022	542	$1,287,884	-99%	32,092	23	175	0.00
2021	31,787	$237,990,198	+8870%	9,283,229	59	883	0.00
2020	1,423	$2,653,215	first year in data	158,053	68	286

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). Data years 2020–2023.

By state

	observed	calculated	calculated	calculated	calculated
Ohio	163	$319,133	19,269	91	266
New York	91	$312,954	18,209	139	482
Florida	147	$305,406	18,065	75	346
Texas	169	$237,592	14,366	61	193
Colorado	36	$198,984	11,448	37	139
Pennsylvania	63	$112,127	6,654	89	218
Kentucky	52	$100,302	6,177	91	318
California	95	$97,247	5,304	39	148
New Jersey	39	$91,856	5,874	89	230
Massachusetts	40	$87,435	4,852	131	243
Connecticut	25	$82,832	4,674	175	405
Illinois	54	$68,781	4,285	55	184
Virginia	35	$62,754	3,720	93	210
Maryland	28	$53,639	3,052	78	233
Oklahoma	46	$52,440	3,273	51	168

Not listed: 24 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	78	$239,790	13,671	118
Denver-Aurora-Centennial, CO	18	$187,529	10,789	58
Boston-Cambridge-Newton, MA-NH	29	$70,763	3,959	135
Cleveland, OH	31	$68,539	4,161	90
Houston-Pasadena-The Woodlands, TX	41	$63,282	3,708	67
Cincinnati, OH-KY-IN	34	$53,490	3,221	61
Dallas-Fort Worth-Arlington, TX	42	$53,160	3,148	54
Miami-Fort Lauderdale-West Palm Beach, FL	30	$52,879	3,056	87
Tampa-St. Petersburg-Clearwater, FL	26	$47,558	2,825	70
Columbus, OH	27	$45,941	2,785	90
Louisville/Jefferson County, KY-IN	22	$43,590	2,665	88
Orlando-Kissimmee-Sanford, FL	18	$40,796	2,437	115
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	27	$38,541	2,182	69
Baltimore-Columbia-Towson, MD	19	$38,425	2,176	76
Jacksonville, FL	20	$37,736	2,254	55

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 31 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 0001A nationally

Mass Immunizer Roster Biller accounts for 58% of payment for 0001A nationally in 2020, across 5 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Mass Immunizer Roster Biller	648	46%	$1,551,379	58%	92,670	143
Centralized Flu	667	47%	$1,015,597	38%	59,908	90
Family Practice	34	2.4%	$30,768	1.2%	1,832	54
Nurse Practitioner	15	1.1%	$9,133	0.34%	616	41
Internal Medicine	12	0.84%	$5,885	0.22%	349	29

Not listed: 16 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 0001A 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