	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	634	$14,847,415	72,635	64	403
Texas	656	$12,684,805	67,382	66	293
Florida	458	$7,166,108	37,083	60	229
New York	414	$6,281,026	29,963	49	202
Georgia	287	$5,589,289	29,660	71	286
Illinois	293	$4,307,593	21,967	56	222
Washington	119	$3,828,260	19,484	117	451
Pennsylvania	318	$3,613,130	18,837	43	153
North Carolina	281	$3,413,324	18,787	57	147
Michigan	226	$3,346,575	17,727	54	219
Louisiana	156	$2,998,315	16,399	81	281
Missouri	156	$2,985,244	16,240	70	283
Minnesota	115	$2,917,943	15,686	122	333
Ohio	285	$2,911,370	15,712	42	143
New Jersey	233	$2,889,158	14,099	45	161

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

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 2020.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	437	$6,424,351	29,751	45
Los Angeles-Long Beach-Anaheim, CA	227	$5,031,242	24,305	72
Chicago-Naperville-Elgin, IL-IN	245	$3,283,062	16,536	50
Houston-Pasadena-The Woodlands, TX	162	$3,220,743	16,571	66
Atlanta-Sandy Springs-Roswell, GA	157	$3,160,711	16,548	69
Seattle-Tacoma-Bellevue, WA	69	$2,513,978	12,657	141
Washington-Arlington-Alexandria, DC-VA-MD-WV	123	$2,406,177	11,489	66
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	203	$2,079,632	10,445	41
Dallas-Fort Worth-Arlington, TX	190	$2,064,840	10,858	48
Sacramento-Roseville-Folsom, CA	33	$2,061,399	10,383	263
Minneapolis-St. Paul-Bloomington, MN-WI	75	$2,001,080	10,727	126
Miami-Fort Lauderdale-West Palm Beach, FL	128	$1,840,067	9,201	58
Boston-Cambridge-Newton, MA-NH	85	$1,802,644	8,718	64
Detroit-Warren-Dearborn, MI	113	$1,793,638	9,187	55
Phoenix-Mesa-Chandler, AZ	111	$1,530,644	8,590	60

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 86 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 90961 nationally

Nephrology accounts for 86% of payment for 90961 nationally in 2020, across 6 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nephrology	5,720	79%	$106,170,868	86%	549,435	96
Internal Medicine	544	7.5%	$9,516,101	7.7%	49,104	90
Nurse Practitioner	770	11%	$5,680,598	4.6%	35,339	46
Physician Assistant	116	1.6%	$853,471	0.69%	5,287	46
Neurology	31	0.43%	$423,573	0.34%	2,144	69
Hospitalist	20	0.28%	$220,569	0.18%	1,163	58

Not listed: 14 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 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