	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	616	$13,625,959	56,895	59	269
Texas	516	$7,045,563	31,964	46	156
Florida	374	$4,561,662	20,062	41	132
New York	296	$4,299,574	17,658	44	151
Illinois	224	$2,999,340	13,160	41	164
Washington	100	$2,525,624	10,902	81	283
Georgia	214	$2,455,603	11,192	41	121
New Jersey	191	$2,336,168	9,719	34	135
Michigan	165	$2,041,107	9,121	39	147
Massachusetts	107	$2,018,022	8,406	57	240
Missouri	124	$1,990,492	9,218	47	202
Pennsylvania	195	$1,932,195	8,660	37	98
Maryland	148	$1,922,021	8,161	42	138
Minnesota	97	$1,893,999	8,702	78	213
North Carolina	235	$1,853,547	8,618	30	77

Not listed: 7 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
Los Angeles-Long Beach-Anaheim, CA	229	$5,100,776	21,320	62
New York-Newark-Jersey City, NY-NJ	330	$4,873,961	19,628	43
Chicago-Naperville-Elgin, IL-IN	183	$2,482,009	10,774	41
Washington-Arlington-Alexandria, DC-VA-MD-WV	108	$1,926,902	7,904	50
Houston-Pasadena-The Woodlands, TX	127	$1,842,252	8,238	52
Seattle-Tacoma-Bellevue, WA	47	$1,432,689	6,089	114
Minneapolis-St. Paul-Bloomington, MN-WI	64	$1,401,120	6,438	93
Boston-Cambridge-Newton, MA-NH	70	$1,368,601	5,680	55
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	144	$1,348,459	5,797	34
Sacramento-Roseville-Folsom, CA	31	$1,338,274	5,646	126
Dallas-Fort Worth-Arlington, TX	132	$1,297,566	5,792	37
Atlanta-Sandy Springs-Roswell, GA	106	$1,271,578	5,690	43
Detroit-Warren-Dearborn, MI	85	$1,074,638	4,726	39
Miami-Fort Lauderdale-West Palm Beach, FL	85	$1,023,669	4,368	42
San Francisco-Oakland-Fremont, CA	65	$953,854	3,630	37

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 82 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 90961 nationally

Nephrology accounts for 85% of payment for 90961 nationally in 2024, across 6 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nephrology	4,424	78%	$67,381,898	85%	294,567	67
Internal Medicine	441	7.8%	$6,852,127	8.6%	30,032	68
Nurse Practitioner	639	11%	$3,931,653	4.9%	20,664	32
Physician Assistant	78	1.4%	$406,653	0.51%	2,127	27
Hospitalist	20	0.35%	$292,786	0.37%	1,294	65
Neurology	18	0.32%	$227,027	0.29%	963	54

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 2024.

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