Nephrology Physician providers in the U.S.
13,597 NPPES records list nephrology physician as their primary taxonomy, about 4.0 per 100,000 residents; District of Columbia and Massachusetts have the most per resident. 10,986 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207RN0300X means
207RN0300X is the National Uniform Claim Committee code for Internal Medicine, Nephrology, in the grouping Allopathic & Osteopathic Physicians. 13,597 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 207RN0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
New York has the most, 276
Source: CMS NPPES, primary taxonomy 207RN0300X by practice city, file of Aug 9, 2026.
All 51 by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 183 | 3.6 |
| Alaska | 14 | 1.9 |
| Arizona | 278 | 3.7 |
| Arkansas | 92 | 3.0 |
| California | 1,468 | 3.8 |
| Colorado | 182 | 3.1 |
| Connecticut | 167 | 4.6 |
| Delaware | 52 | 5.0 |
| District of Columbia | 79 | 11.6 |
| Florida | 840 | 3.7 |
| Georgia | 417 | 3.8 |
| Hawaii | 65 | 4.5 |
| Idaho | 34 | 1.7 |
| Illinois | 572 | 4.6 |
| Indiana | 265 | 3.9 |
| Iowa | 92 | 2.9 |
| Kansas | 70 | 2.4 |
| Kentucky | 174 | 3.8 |
| Louisiana | 219 | 4.8 |
| Maine | 50 | 3.6 |
| Maryland | 337 | 5.5 |
| Massachusetts | 417 | 6.0 |
| Michigan | 376 | 3.7 |
| Minnesota | 261 | 4.5 |
| Mississippi | 110 | 3.7 |
| Missouri | 285 | 4.6 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 26 | 2.3 |
| Nebraska | 63 | 3.2 |
| Nevada | 125 | 3.9 |
| New Hampshire | 37 | 2.6 |
| New Jersey | 433 | 4.7 |
| New Mexico | 79 | 3.7 |
| New York | 1,049 | 5.4 |
| North Carolina | 403 | 3.7 |
| North Dakota | 28 | 3.6 |
| Ohio | 499 | 4.2 |
| Oklahoma | 112 | 2.8 |
| Oregon | 136 | 3.2 |
| Pennsylvania | 651 | 5.0 |
| Rhode Island | 51 | 4.7 |
| South Carolina | 202 | 3.8 |
| South Dakota | 26 | 2.8 |
| Tennessee | 266 | 3.7 |
| Texas | 1,159 | 3.8 |
| Utah | 84 | 2.5 |
| Vermont | 15 | 2.3 |
| Virginia | 327 | 3.8 |
| Washington | 284 | 3.6 |
| West Virginia | 66 | 3.7 |
| Wisconsin | 207 | 3.5 |
| Wyoming | 10 | 1.7 |
In federal data
- NUCC code207RN0300X · Internal Medicine
- Size rank79th of 688 specialties by records (0.19% of all)
- In its family6th of 31 Internal Medicine codes, 4.4% of the family
- Part D prescribers10,986 (80.8% of records)
- Part D claims1,465 a year per prescriber, on average (45th of 496)
- Industry payments8,230 physicians paid $25.4M in 2024, $3K each on average
- Concentration9 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of nephrology physician records
- Peter Hulman, M.D.Anchorage, AK1407854052
- Jeremy Gitomer, M.D.Anchorage, AK1073509063
- Mark Smith, M.D.Anchorage, AK1861479651
- Steven Tucker, MDAnchorage, AK1346200276
- Andrzej Maciejewski, MDAnchorage, AK1194780114
- Leslie Glasgow, MDAnchorage, AK1457317992
- Stefano Emili, MDAnchorage, AK1558319434
- Manpreet Bhandal, MBBS, M.D.Anchorage, AK1326351420
- Shuang Ying Bao, M.D.Anchorage, AK1164736930
- Lisa Roberts, M.D.Anchorage, AK1083148910
- Osman Yilmam, MDAnchorage, AK1275029076
- Eduardo Cadore GuzzoAnchorage, AK1053931717
- Rahul Abraham, MDAnchorage, AK1609486190
- David Lefler, DOAnchorage, AK1487609236
- Phillip Madonia, M.D.Alabaster, AL1245440585
- Roman Brantley, MDBessemer, AL1356399950
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Nephrology Physician headcount concentrate?
13,597 Nephrology Physician NPIs span 55 states; California alone holds 1,468. Top metros include New York, NY; Houston, TX; Boston, MA; Chicago, IL. Nationally this is 79th of 688 NUCC codes.
How large is Nephrology Physician's Open Payments footprint?
CMS Open Payments 2024 lists 8,230 Nephrology Physician physicians totaling $25.4M (165,677 payments; average $3K, 132nd of 470). Presence in Open Payments is not a quality judgment.
How heavy is Nephrology Physician Part D prescribing at scale?
Among Nephrology Physician NPIs, 10,986 appear in the Medicare Part D Prescriber PUF (average 1,465 claims and $278K drug cost per prescriber; 45th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.