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 155 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. Irish Anne Cash, BSN, RNC-NIC, DCSDNeonatal Intensive Care Registered Nurse1063349355
  2. Maxine CashPersonal Care Attendant1629532965
  3. Michelle CashHome Health Aide1205193489
  4. Ricky CashPersonal Care Attendant1124885579
  5. Pamela Cash-ThornePersonal Care Attendant1053153320
  6. Melanie Cashdan, LCSWClinical Social Worker1851661854
  7. Carly CashmanPhysical Therapist1699541441
  8. Sierra Casillas, CNMAdvanced Practice Midwife1194974980
  9. Morgan Casimir, OTD, OTR/LOccupational Therapist1891392296
  10. Samora Casimir, OTR/LOccupational Therapist1003072968
  11. Ana CaskinPediatrics Physician1205835899
  12. Mary Caspa Epse FohtungHome Health Aide1538636998
  13. Nicholas CasscellsOrthopaedic Surgery Physician1811330996
  14. Yvette CassellPersonal Care Attendant1679136980
  15. Paige Cassibo, CAAAnesthesiologist Assistant1538951678
  16. Carla Cassidy, NPAdult Health Nurse Practitioner1528249679
  17. Chloe CassioSpeech-Language Pathologist1649973728
  18. Monica Castagnetti, DPTPhysical Therapist1922154624
  19. Ruben CastanedaOther Technician1255429262
  20. Sandra Castaneda, HHAHome Health Aide1447500434
  21. Reyna Castaneda MorenoHome Health Aide1831434562
  22. Jennifer Castaneda-MartinezBehavior Technician1811884216
  23. Amanda Castel, MD, MPHPublic Health & General Preventive Medicine Physician1134335938
  24. Benicio CastellanoPersonal Care Attendant1801723671
  25. Kerlly Castellano Crespo, AAAnesthesiologist Assistant1790344836
  26. Cinthya Castellanos CanarHome Health Aide1902253263
  27. Leslie Castelo-Soccio, MDDermatology Physician1992865976
  28. Victoria Castens Hynes, DMDGeneral Practice Dentistry1710466727
  29. Alejandro CastilloAnesthesiologist Assistant1073274361
  30. Angely CastilloPersonal Care Attendant1861344897
  31. Elizabeth CastilloClinical Social Worker1417437476
  32. Mark Castillo, PA-CPhysician Assistant1548604408
  33. Richmond Castillo, MDEmergency Medicine Physician1811456015
  34. Sara CastilloPersonal Care Attendant1477043883
  35. Sofia CastilloRegistered Nurse1710813506
  36. Maria Castillo-Catoni, MDInternal Medicine Physician1386804136
  37. Nathan CastinePhysical Therapist1760850481
  38. James CastleCommunity Health Worker1750829628
  39. June Castner, MDGeneral Practice Physician1619137726
  40. Anne Casto, NNP-BCCritical Care Neonatal Nurse Practitioner1770833584
  41. Marie-France CastorSchool Psychologist1255154324
  42. Marissa Castriota, PHARMDPharmacist1184909244
  43. Anthony Castro, ODOptometrist1669264180
  44. Besi CastroHome Health Aide1235489360
  45. Catherine CastroRegistered Nurse1003674060
  46. El Castro, MDInternal Medicine Physician1508983842
  47. Jenifer CastroAdult Companion1902595408
  48. Marialuz Castro, LPC, PMH-CProfessional Counselor1407225402
  49. Mary Castro, HHAHome Health Aide1194085373
  50. Oswaldo Castro, M.D.Hematology (Internal Medicine) Physician1902022825

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.