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 636 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. Shantae OnealAttendant Care Provider1033784723
  2. Tabatha OnealBehavior Technician1164184610
  3. Amy OneillSchool Social Worker1376208058
  4. Barbara Oneill, MDPediatric Anesthesiology Physician1609966365
  5. Margot Onek, MDPsychiatry Physician1306082144
  6. Eric OnekonHome Health Aide1548532179
  7. Sarah OnekonHome Health Aide1497019616
  8. Sylvanus OnekonHome Health Aide1740544014
  9. Jessica Ong, MD, PHDStudent in an Organized Health Care Education/Training Program1104407790
  10. Rosine Ongbassomben BelehoCase Manager/Care Coordinator1295565208
  11. Jeffrey Ongemach, BS, CG IDHS, NREMT-IIndependent Duty Medical Technicians1689719528
  12. Hortense Viviane Ongmbembe EkouleHome Health Aide1245887157
  13. Marie Gabrielle OngobabouleRegistered Nurse1972205714
  14. Solange Ongtokono Epse NokiosHome Health Aide1477494409
  15. Emmanuel Oni, M.D.Psychiatry Physician1356597975
  16. Funmilayo OniHome Health Aide1780943647
  17. Olutoyin Oni, RPHAmbulatory Care Pharmacist1376109702
  18. Oluwatobi OniRegistered Nurse1902674096
  19. Omolari OniHome Health Aide1083973705
  20. Taiye Oni, FNPFamily Nurse Practitioner1932430659
  21. Modupe OnifadeHome Health Aide1699240036
  22. Opeyemi OnilogboCase Manager/Care Coordinator1689369480
  23. Cassidy Onley, DOStudent in an Organized Health Care Education/Training Program1003666868
  24. Adewale Onobiyi, RNRegistered Nurse1952727950
  25. Ikechukwu Onochie, HOME HEALTH AIDEHome Health Aide1487900254
  26. Kaosisochukwu OnochieStudent in an Organized Health Care Education/Training Program1942180898
  27. Charle OnomenCase Manager/Care Coordinator1053111591
  28. Engin Ontiveros, PHDPsychologist1871146944
  29. Josephine OnuakuLicensed Practical Nurse1497377618
  30. Nwaneka OnuakuLicensed Practical Nurse1013324045
  31. Juliet OnufrakSocial Worker1295430817
  32. Chibuozu OnuigboBehavior Technician1659171189
  33. Pamela Onukafor, RNRegistered Nurse1477345460
  34. Florence OnumaHome Health Aide1881176774
  35. Chavon Onumah, M.D., M.P.HInternal Medicine Physician1053503730
  36. Magdalen OnunakuHome Health Aide1174888721
  37. Emilia Onuoha, FNPFamily Nurse Practitioner1467150631
  38. Angela OnwuanishiaHome Health Aide1093076465
  39. Nkechi Onwuche, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1326409988
  40. Regina OnwudeHome Health Aide1922365345
  41. Ekwy OnwudiegwuRegistered Nurse1508602673
  42. Joy OnwudiweHome Health Aide1790031649
  43. Emmanuel OnwuharonyeHome Health Aide1245594662
  44. Chukwuma Onwuka, PHARMDPharmacist1073113361
  45. Osariemen OnwukaHome Health Aide1801150172
  46. Dominic Onwukwe, ODOptometrist1508953225
  47. Lilian OnwulataClinical Social Worker1427623479
  48. Laurita OnwumbikoHome Health Aide1184219719
  49. Maureen OnwumbikoCase Manager/Care Coordinator1790370195
  50. Ijeoma OnwumeluHome Health Aide1720358674

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.