NPPES file of Aug 9, 2026

Nephrology Physician in District of Columbia

79 NPPES records list nephrology physician with a practice address in District of Columbia, 11.6 per 100,000 residents, the 1st highest rate of 51; each record links to the provider's NPI and the District of Columbia license search. Page 2 of 2.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RN0300X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Washington has the most, 79

  1. Washington79

Nephrology Physician records in District of Columbia

  1. Jagdeep Obhrai, M.D.Washington, DC 200371790765246
  2. Jay Ocuin, MDWashington, DC 200101841286689
  3. Janis Orlowski, MDWashington, DC 200101457304271
  4. Richard Palmer, MDWashington, DC 200101134206741
  5. Ramaswamy Parthasarathy, M.DWashington, DC 204221134222128
  6. Samir Patel, M.D.Washington, DC 200371073682712
  7. Thakor Patel, M.D.Washington, DC 204221619069374
  8. Fred Polsky, M.D.Washington, DC 200161285731620
  9. Dominic Raj, MDWashington, DC 200371043231285
  10. Janani Rangaswami, MDWashington, DC 200371275748626
  11. Suvi Rasaiah, MDWashington, DC 200101619453388
  12. Kathryn Ratanavanich, D.O.Washington, DC 200101801093919
  13. Preeti Rout, M.D.Washington, DC 200101184779076
  14. Robert RubinWashington, DC 200071013917749
  15. Harminder Sandhu, MDWashington, DC 200101992966931
  16. Divya Shankaranarayanan, MDWashington, DC 200371740691054
  17. Wen Shen, M.D.Washington, DC 200071629221551
  18. Michael ShermanWashington, DC 200101710144670
  19. Qandeel Soomro, M.DWashington, DC 200051932498383
  20. Anam Tariq, D.O.Washington, DC 200371396151841
  21. Lonnie Thach, MDWashington, DC 200101376002345
  22. Jason UmansWashington, DC 200071215936182
  23. Judith Veis, MDWashington, DC 200101336113950
  24. Gilberto Vera, M.D.Washington, DC 200171982718383
  25. Swati Viswanathan, MDWashington, DC 200371851972004
  26. Devika Wijesekera, M.D.Washington, DC 200021508911603
  27. Christopher Wilcox, M.D.Washington, DC 200071245231109
  28. Chien-Wen YangWashington, DC 200371548646664
  29. Meer Zonozi, M.D.Washington, DC 200321740262989

Source: CMS NPPES, primary taxonomy 207RN0300X: records by practice city and the list of records, file of Aug 9, 2026.

District of Columbia ranks 1 of 51 per resident

  1. District of Columbia11.6
  2. Massachusetts6.0
  3. Maryland5.5
  4. 50 states and D.C.4.0

Source: CMS NPPES, primary taxonomy 207RN0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.2% of these records appear in a Medicare file, against 85.8% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. District of Columbia72.2%
  2. United States85.8%

Nephrology Physician records in District of Columbia, measured

  • In a Medicare file57 of 79 · 72.2% here, 85.8% nationally
  • In the CMS Doctors and Clinicians file47 · 59.5% here, 76.0% nationally
  • Not updated in five years or more48 · 60.8% here, 54.9% nationally
  • Median graduation year1998 · the 47 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RN0300X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

79 NPPES records list nephrology physician (207RN0300X) as their primary taxonomy with a practice address in District of Columbia: 11.6 per 100,000 residents against 4 nationally (50 states and D.C.). Washington has 79 of them (100%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New Mexico79
  2. Utah84
  3. Kansas70
  4. Arkansas92

States with a similar rate per 100,000

  1. Massachusetts6.0
  2. Maryland5.5
  3. New York5.4
  4. Delaware5.0

The largest states

  1. California1,468
  2. Texas1,159
  3. New York1,049
  4. Florida840
  5. Pennsylvania651

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.