	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	629	$16,191,549	65,201	65	338
Texas	574	$9,496,486	41,333	51	165
Florida	438	$6,367,307	27,152	44	170
New York	368	$5,831,969	22,469	43	156
Illinois	280	$4,195,417	17,521	42	191
Georgia	257	$3,785,792	16,635	51	173
Washington	116	$3,336,651	14,114	98	308
Pennsylvania	238	$3,084,351	13,211	42	143
Missouri	158	$2,899,257	12,950	55	232
Michigan	195	$2,843,598	12,340	49	167
New Jersey	207	$2,789,404	11,156	40	134
North Carolina	272	$2,772,493	12,554	39	102
Minnesota	106	$2,613,974	11,451	91	250
Massachusetts	123	$2,600,983	10,514	67	227
Maryland	149	$2,564,696	10,342	57	164

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 2022.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	392	$6,320,796	23,890	41
Los Angeles-Long Beach-Anaheim, CA	229	$5,347,261	21,303	65
Chicago-Naperville-Elgin, IL-IN	221	$3,348,441	13,861	43
Houston-Pasadena-The Woodlands, TX	156	$2,743,753	11,611	56
Washington-Arlington-Alexandria, DC-VA-MD-WV	120	$2,740,629	10,748	68
Atlanta-Sandy Springs-Roswell, GA	137	$2,009,004	8,668	48
Seattle-Tacoma-Bellevue, WA	62	$1,991,925	8,361	104
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	165	$1,927,835	7,982	38
Sacramento-Roseville-Folsom, CA	32	$1,817,246	7,501	182
Minneapolis-St. Paul-Bloomington, MN-WI	69	$1,801,670	7,892	96
Boston-Cambridge-Newton, MA-NH	80	$1,746,270	6,983	59
Dallas-Fort Worth-Arlington, TX	154	$1,628,426	7,001	39
Detroit-Warren-Dearborn, MI	96	$1,472,969	6,271	49
St. Louis, MO-IL	75	$1,423,561	6,166	53
Miami-Fort Lauderdale-West Palm Beach, FL	108	$1,381,456	5,656	42

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 84 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2022.

Specialties billing 90961 nationally

Nephrology accounts for 85% of payment for 90961 nationally in 2022, across 6 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nephrology	5,122	79%	$92,064,924	85%	389,207	76
Internal Medicine	489	7.5%	$8,666,210	8.0%	36,658	75
Nurse Practitioner	712	11%	$5,260,954	4.9%	26,779	38
Physician Assistant	116	1.8%	$736,469	0.68%	3,739	32
Neurology	26	0.40%	$326,925	0.30%	1,370	53
Hospitalist	19	0.29%	$270,282	0.25%	1,148	60

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 2022.

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