	observed	calculated	calculated	calculated	calculated	calculated	reported
2024	5,645	$79,431,547	-13%	351,233	42	174	5.52
2023	6,091	$91,360,765	-15%	398,188	45	185	5.52
2022	6,514	$107,758,472	-14%	460,849	49	199	5.52
2021	6,868	$125,891,787	+2%	532,980	52	222	5.52
2020	7,234	$123,380,066	first year in data	645,292	60	260	4.26

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	627	$17,039,421	67,595	64	365
Texas	615	$11,929,876	51,221	56	233
Florida	453	$7,309,547	30,869	47	201
New York	372	$6,475,290	24,899	49	169
Illinois	289	$4,935,984	20,309	50	193
Georgia	279	$4,860,598	21,090	56	203
Washington	117	$4,471,306	18,543	120	389
Pennsylvania	277	$3,622,881	15,319	41	139
Michigan	220	$3,588,552	15,269	50	178
Missouri	153	$3,257,092	14,384	67	220
Minnesota	113	$3,191,078	13,899	112	334
North Carolina	268	$3,115,565	13,934	42	123
New Jersey	212	$3,039,061	12,030	42	147
Massachusetts	122	$2,825,344	11,212	65	234
Ohio	265	$2,769,341	12,127	37	106

Not listed: 1 billers with an armed-forces or unknown state code (ZZ); they are in the national totals.

Not listed: 6 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	388	$6,557,632	24,516	44
Los Angeles-Long Beach-Anaheim, CA	228	$5,633,542	22,132	66
Chicago-Naperville-Elgin, IL-IN	237	$3,790,694	15,386	49
Houston-Pasadena-The Woodlands, TX	146	$3,177,631	13,205	60
Atlanta-Sandy Springs-Roswell, GA	153	$2,756,931	11,814	55
Seattle-Tacoma-Bellevue, WA	66	$2,756,543	11,293	138
Washington-Arlington-Alexandria, DC-VA-MD-WV	118	$2,664,085	10,310	64
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	185	$2,254,376	9,220	39
Minneapolis-St. Paul-Bloomington, MN-WI	71	$2,242,586	9,730	120
Dallas-Fort Worth-Arlington, TX	175	$2,171,952	9,295	45
Sacramento-Roseville-Folsom, CA	32	$2,168,532	8,831	247
Boston-Cambridge-Newton, MA-NH	80	$2,010,709	7,911	63
Detroit-Warren-Dearborn, MI	110	$1,935,737	8,116	49
Miami-Fort Lauderdale-West Palm Beach, FL	118	$1,723,926	7,032	42
St. Louis, MO-IL	78	$1,589,789	6,826	63

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 85 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 90961 nationally

Nephrology accounts for 86% of payment for 90961 nationally in 2021, across 6 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nephrology	5,434	79%	$108,256,422	86%	453,542	83
Internal Medicine	515	7.5%	$9,778,051	7.8%	40,903	79
Nurse Practitioner	728	11%	$5,850,262	4.6%	29,333	40
Physician Assistant	118	1.7%	$831,648	0.66%	4,167	35
Neurology	25	0.36%	$359,802	0.29%	1,486	59
Hospitalist	16	0.23%	$291,814	0.23%	1,237	77

Not listed: 12 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 90961 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