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 515 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. Maria Martinez, M.D.Otolaryngology Physician1306992078
  2. Maria Martinez, MASTERSchool Psychologist1376199703
  3. Maria MartinezPersonal Care Attendant1083597199
  4. Melissa Martinez, M.A., CCC-SLPSpeech-Language Pathologist1043143076
  5. Olivia Martinez, OTROccupational Therapist1336665546
  6. Pamela MartinezPersonal Care Attendant1750852794
  7. Patricia Martinez, MSN, APRN-PMH,BCAdult Psychiatric/Mental Health Registered Nurse1205931870
  8. Paul Martinez, MDPlastic and Reconstructive Surgery Physician1306540190
  9. Silvia Martinez, ED.D. CCC-SLPSpeech-Language Pathologist1205052016
  10. Teylor MartinezMedical Physician Assistant1396361630
  11. Yasmin MartinezPersonal Care Attendant1619605433
  12. Pablo Martinez Arellano, M.D.Student in an Organized Health Care Education/Training Program1982496048
  13. Jennifer Martinez Cruz, DNP, AGACNP-BCAcute Care Nurse Practitioner1538086699
  14. Valeria Martinez LebronStudent in an Organized Health Care Education/Training Program1790334506
  15. Nelson Martinez Merizalde Balarezo, M.D.Student in an Organized Health Care Education/Training Program1518710102
  16. Itzel Martinez PlacidoStudent in an Organized Health Care Education/Training Program1437955895
  17. Maria Martinez SantosHome Health Aide1407101751
  18. Andres Martinez-Marin, CAAAnesthesiologist Assistant1972236735
  19. Hannah Martinez-O'Reilly, LGSWSocial Worker1912471533
  20. Joseph Martinez-WilliamsProfessional Counselor1003303447
  21. Joy Martini, LICSWClinical Social Worker1093244089
  22. Michele MartiniMental Health Counselor1497279525
  23. D'Angelo MartinoBehavior Technician1003692799
  24. Elena Martino, OTR/LOccupational Therapist1831909670
  25. Chad Martins, MDInternal Medicine Physician1255620597
  26. Raymond Martins, MDInternal Medicine Physician1730234030
  27. Alexandra Martinson, MDPediatrics Physician1285384263
  28. Zara Martirosyan, MDSleep Medicine (Internal Medicine) Physician1225300379
  29. Kate Martis, PA-CMedical Physician Assistant1972804243
  30. Alessandra Martorella, DOStudent in an Organized Health Care Education/Training Program1053006247
  31. Natalie Martos, P.A.Physician Assistant1679945794
  32. Doris MartuHome Health Aide1003177510
  33. Scott Martyna, D.M.D.Student in an Organized Health Care Education/Training Program1003179474
  34. Lydia Martynec, MDNuclear Medicine Physician1710978010
  35. Eric Martz, LICSWClinical Social Worker1700161270
  36. Banchiamlake MaruHome Health Aide1629593975
  37. Grace MarumaHome Health Aide1205104684
  38. Allyson Marvin, MS OTR/LOccupational Therapist1598066268
  39. Alexander Marwaha, DOStudent in an Organized Health Care Education/Training Program1053166546
  40. Alan Marx, DDSDentist1265764583
  41. Jennifer MarxStudent in an Organized Health Care Education/Training Program1922841279
  42. Judith Marx, PH.D.Counseling Psychologist1497964423
  43. Julie Marx, M.D.Pediatrics Physician1255545760
  44. Matthew MarxStudent in an Organized Health Care Education/Training Program1538546767
  45. Ahmadou Maryam RoukayatouCase Manager/Care Coordinator1154026201
  46. Courtney MarzbanDentist1255674388
  47. Samantha Marzi, APRNPsychiatry Physician1952176190
  48. Donna Marzo, PSYDPsychologist1225353659
  49. Tamara Marzouk, LICSWClinical Social Worker1962169300
  50. Gabby Marzullo-DoveBehavior Technician1598557019

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.