NPPES file of Aug 9, 2026

Doctors and health care providers in Washington, DC

45,857 individual NPPES records list a practice address in Washington, 1st of 4 District of Columbia cities. The largest group is home health aide: 8,945, 20% of the city's records, against 20% across District of Columbia. Page 642 of 918.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Washington

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Washington in District of Columbia

  • Rank in District of Columbia1st of 4 cities by records
  • Share of the state99.2% of District of Columbia's records
  • Specialties present25 or more taxonomy codes
  • Top three groups39.8% of all records
  • Home Health Aide rank1st of the 10 District of Columbia cities with the most

Providers in Washington, alphabetically

  1. Olive Osuoji, M.D.Dermatology Physician1942733167
  2. Edward OtanoPersonal Care Attendant1386371474
  3. Adebayo OtejuMental Health Counselor1144916537
  4. Bianca Oteng, MDStudent in an Organized Health Care Education/Training Program1902746753
  5. Eugene Oteng, M.D., PH. DEmergency Medicine Physician1023466950
  6. Aminat OteniaraCase Manager/Care Coordinator1730035551
  7. Paula OteroProfessional Counselor1528540010
  8. Moriamo OteyHome Health Aide1336484997
  9. Agnes Otieno, MDStudent in an Organized Health Care Education/Training Program1124871314
  10. Adeola OtinniyiContractor1982303145
  11. Adesewa OtinniyiCase Manager/Care Coordinator1710686878
  12. Abigail OtisCase Manager/Care Coordinator1003686189
  13. Abiodun Otolorin, M.D.Family Medicine Physician1922425073
  14. Yurina OtsukaProfessional Counselor1689454449
  15. Ingrid Ott, M.D.Specialist1174573190
  16. Megan OttCertified Registered Nurse Anesthetist1275167579
  17. Kaye Otten, LCSW-C, LICSWClinical Social Worker1902644636
  18. Laura Ottenritter, LICSWClinical Social Worker1043057169
  19. Eric Ottesen, M.D.Public Health & General Preventive Medicine Physician1720383771
  20. Christine OttleyCase Manager/Care Coordinator1356140115
  21. David Otto, MME, MT-BCMusic Therapist1184647406
  22. Jordan Otto, MA, ED.SSchool Psychologist1992471429
  23. Nicole Otto, LICSWClinical Social Worker1376774281
  24. Katherine Ottolini, M.D.Neonatal-Perinatal Medicine Physician1538422613
  25. Tajudeen Ottun, PHARM.D.Pharmacist1619130382
  26. Kimberly Ottwell, M.D.Family Medicine Physician1376645747
  27. Oritsetsemaye Otubu, M.D.,MPHFamily Medicine Physician1609011097
  28. Owokunile Otubusin, M.D.Psychiatry Physician1598115438
  29. Mariam OtunbaDevelopmental Therapist1083445738
  30. Philip OtuonyeHome Health Aide1740531912
  31. Anuoluwapo OtuyeluFamily Nurse Practitioner1487285771
  32. Owolabi OtuyoCase Manager/Care Coordinator1760337257
  33. Angeline OuaboHome Health Aide1255691838
  34. Elise OuamongueneHome Health Aide1659632347
  35. Lacina OuattaraPersonal Care Attendant1710570064
  36. Manaza OuattaraHome Health Aide1750043188
  37. Tanga OuedragoHome Health Aide1699022640
  38. Adele OuedraogoHome Health Aide1669733416
  39. Mickael OuedraogoHome Health Aide1154686418
  40. Rihanata OuedraogoHome Health Aide1851655385
  41. Meredith Ouellette, MS, CCC-SLPSpeech-Language Pathologist1841560687
  42. Michelle Ouellette, FNPPediatric Cardiology Physician1881754166
  43. Shemsia OumerHome Health Aide1790175974
  44. Zeyneb OumerHome Health Aide1306301767
  45. Adio OusmanouPersonal Care Attendant1164241808
  46. Miho Outhouse, PSY.D., MHRMental Health Counselor1184753436
  47. Chamarcra OutlawPersonal Care Attendant1184592164
  48. Chantel Outlaw, RNRegistered Nurse1356269203
  49. Darlene OuttaraPersonal Care Attendant1144746694
  50. Annie Ouyang, MDStudent in an Organized Health Care Education/Training Program1841044948

The largest District of Columbia cities

  1. Ne149
  2. Washington Dc147
  3. Bolling Afb74

All of District of Columbia →

How to read this directory

Washington, District of Columbia appears in the CMS National Plan and Provider Enumeration System with 45,857 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Washington - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Washington practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Washington is weighted toward Home Health Aide (8,945 clinicians, followed by Personal Care Attendant with 5,624 and Case Manager/Care Coordinator with 3,669). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to District of Columbia's population, Washington reports roughly 6753.9 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

For Washington patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Washington, DC?

There are 45,857 registered healthcare providers in Washington, DC, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Washington?

The most common specialties in Washington are Home Health Aide, Personal Care Attendant, Case Manager/Care Coordinator, Student in an Organized Health Care Education/Training Program, Clinical Social Worker. Home Health Aide has the most providers with 8,945.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

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.