	observed	calculated	calculated	calculated	calculated
California	2,668	$56,555,025	371,078	53	531
Idaho	122	$43,251,894	282,714	68	10,517
New York	1,504	$31,958,170	206,677	67	510
Florida	1,684	$30,742,235	200,109	64	306
Pennsylvania	1,751	$27,959,103	180,586	59	346
Massachusetts	737	$25,244,063	163,918	120	737
Illinois	1,217	$21,715,199	140,414	54	384
Texas	1,699	$21,032,440	136,118	47	235
Colorado	520	$17,752,038	114,883	60	247
Maryland	754	$17,590,885	114,109	87	476
Virginia	947	$17,407,692	113,243	68	440
Wisconsin	1,464	$17,367,868	112,317	31	300
New Jersey	801	$16,920,382	109,167	76	461
Ohio	1,279	$16,775,558	108,496	58	246
North Carolina	1,311	$16,076,976	104,490	42	265

Not listed: 3 billers with an armed-forces or unknown state code (AE, ZZ); 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 2024.

Top metro areas

	observed	calculated	calculated	calculated
Boise City, ID	43	$42,014,321	274,747	51
New York-Newark-Jersey City, NY-NJ	1,313	$31,907,894	206,327	76
Los Angeles-Long Beach-Anaheim, CA	676	$16,915,865	111,491	68
Boston-Cambridge-Newton, MA-NH	517	$16,866,356	109,540	114
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	783	$15,986,311	103,510	70
Chicago-Naperville-Elgin, IL-IN	867	$15,128,572	97,828	45
Washington-Arlington-Alexandria, DC-VA-MD-WV	774	$14,721,824	95,999	53
Denver-Aurora-Centennial, CO	216	$13,749,849	88,775	61
San Francisco-Oakland-Fremont, CA	476	$8,296,624	54,521	30
Minneapolis-St. Paul-Bloomington, MN-WI	644	$8,065,071	52,608	26
Miami-Fort Lauderdale-West Palm Beach, FL	407	$7,019,604	45,711	48
Baltimore-Columbia-Towson, MD	295	$6,889,605	44,485	96
Dallas-Fort Worth-Arlington, TX	528	$6,643,386	42,959	52
Seattle-Tacoma-Bellevue, WA	410	$6,173,708	40,199	45
Orlando-Kissimmee-Sanford, FL	177	$5,852,320	37,796	51

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 100 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 91322 nationally

Mass Immunizer Roster Biller accounts for 59% of payment for 91322 nationally in 2024, across 18 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Mass Immunizer Roster Biller	17,485	56%	$334,121,651	59%	2,168,684	124
Centralized Flu	4,801	15%	$159,733,898	28%	1,034,020	215
Pharmacy	1,582	5.0%	$26,678,735	4.7%	172,675	109
Family Practice	3,323	11%	$17,481,197	3.1%	115,828	35
Internal Medicine	2,003	6.4%	$13,730,522	2.4%	90,844	45
Nurse Practitioner	1,279	4.1%	$5,013,160	0.89%	33,269	26
Public Health or Welfare Agency	113	0.36%	$1,719,169	0.30%	11,891	105
Physician Assistant	386	1.2%	$1,319,239	0.23%	8,682	22
Clinical Laboratory	59	0.19%	$1,252,123	0.22%	8,130	138
Pediatric Medicine	47	0.15%	$894,632	0.16%	5,863	125
General Practice	26	0.08%	$342,838	0.06%	2,317	89
Geriatric Medicine	45	0.14%	$333,903	0.06%	2,210	49
All Other Suppliers	14	0.04%	$320,224	0.06%	2,086	149
Preventive Medicine	20	0.06%	$236,405	0.04%	1,591	80
Emergency Medicine	27	0.09%	$193,658	0.03%	1,349	50

Not listed: 26 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 91322 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