	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	620	$15,010,500	61,582	63	301
Texas	551	$7,937,223	35,217	46	157
Florida	399	$5,510,322	23,942	44	154
New York	335	$4,918,250	19,586	45	150
Illinois	254	$3,532,234	15,012	40	167
Georgia	235	$2,949,567	13,305	43	133
Washington	106	$2,846,950	12,248	82	286
New Jersey	198	$2,640,027	10,782	38	146
Michigan	200	$2,554,374	11,238	40	145
Pennsylvania	229	$2,521,504	11,098	36	122
Missouri	135	$2,359,284	10,802	55	209
Minnesota	104	$2,259,349	10,172	79	266
Maryland	150	$2,214,629	9,143	43	158
Massachusetts	109	$2,180,392	9,021	61	204
Ohio	206	$2,073,804	9,439	37	104

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 2023.

Top metro areas

	observed	calculated	calculated	calculated
New York-Newark-Jersey City, NY-NJ	370	$5,512,535	21,530	42
Los Angeles-Long Beach-Anaheim, CA	224	$5,383,979	21,980	68
Chicago-Naperville-Elgin, IL-IN	213	$2,896,977	12,217	40
Washington-Arlington-Alexandria, DC-VA-MD-WV	115	$2,378,906	9,614	60
Houston-Pasadena-The Woodlands, TX	133	$2,074,719	9,025	55
Sacramento-Roseville-Folsom, CA	33	$1,645,210	6,851	175
Seattle-Tacoma-Bellevue, WA	50	$1,636,880	6,960	104
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	159	$1,592,475	6,728	34
Minneapolis-St. Paul-Bloomington, MN-WI	67	$1,527,461	6,845	82
Boston-Cambridge-Newton, MA-NH	72	$1,503,562	6,178	59
Atlanta-Sandy Springs-Roswell, GA	114	$1,453,153	6,459	43
Dallas-Fort Worth-Arlington, TX	144	$1,441,520	6,238	35
Detroit-Warren-Dearborn, MI	104	$1,372,195	5,951	38
Miami-Fort Lauderdale-West Palm Beach, FL	95	$1,281,278	5,381	41
St. Louis, MO-IL	67	$1,081,809	4,828	47

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). The 80 areas with the most payment among those with at least 11 billers; non-metro parts of each state are one area. Data year 2023.

Specialties billing 90961 nationally

Nephrology accounts for 85% of payment for 90961 nationally in 2023, across 6 specialties on claims.

	observed	calculated	calculated	calculated	calculated	calculated
Nephrology	4,761	78%	$77,862,904	85%	335,461	70
Internal Medicine	477	7.8%	$7,712,889	8.4%	33,342	70
Nurse Practitioner	691	11%	$4,438,749	4.9%	23,083	33
Physician Assistant	93	1.5%	$504,613	0.55%	2,592	28
Neurology	24	0.39%	$266,291	0.29%	1,115	46
Hospitalist	19	0.31%	$229,388	0.25%	1,007	53

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 2023.

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