NPPES file of Aug 9, 2026

Doctors and health care providers in Napa, CA

3,583 individual NPPES records list a practice address in Napa, 63rd of 812 California cities. The largest group is behavior technician: 990, 28% of the city's records, against 18% across California. Page 40 of 72.

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

Napa in California

  • Rank in California63rd of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups37% of all records

Compared with California as a whole, Napa has 4.4× the state's share of licensed psychiatric technician records and 0.28× its share of student in an organized health care education/training program records.

Providers in Napa, alphabetically

  1. Dareyus MarananBehavior Technician1275212367
  2. Kathleen Rae Marcelo, DDSGeneral Practice Dentistry1164951075
  3. Karla Marchbanks Onofre, PSYDForensic Psychologist1457643868
  4. Claudia MaresMental Health Counselor1487729927
  5. Armida Mares RamosMechanotherapist1770320640
  6. Pamela Marietti, O.T.Occupational Therapist1245903178
  7. Adrienne Marilla, MSW, OTD, OTR/LOccupational Therapist1568715266
  8. Guadalupe Marin Giraldo, R.N.Registered Nurse1699008292
  9. Maria Marin-ChavezCase Manager/Care Coordinator1487360491
  10. Carolina MariposaMarriage & Family Therapist1679776322
  11. Sharon Marks, L.C.S.W.Clinical Social Worker1972585172
  12. Mindy Marquez, MDUrology Physician1841239928
  13. Nadia MarquezBehavior Technician1205668365
  14. Nancy MarquezMental Health Counselor1538234067
  15. Marquita Marquis, R.N.Administrator Registered Nurse1770638611
  16. Melissa Marrapese, PHDPsychologist1164755674
  17. Monaye MarshallBehavior Technician1275383390
  18. Toni Martello, M.D.Psychiatry Physician1801157920
  19. Jacqueline MartinPhysical Therapist1093685976
  20. James MartinAddiction (Substance Use Disorder) Counselor1497026710
  21. Jennifer Martin, MS, ATCAthletic Trainer1235874231
  22. Michelle Martin, MDPsychiatry Physician1164474938
  23. Robert Martin, DDSGeneral Practice Dentistry1821190943
  24. Ronishia MartinCase Manager/Care Coordinator1578147468
  25. Ariana MartinezRegistered Nurse1407431737
  26. Ashley MartinezCommunity Health Worker1851133839
  27. Berenice MartinezBehavior Technician1467226118
  28. Briana MartinezDay Training/Habilitation Specialist1053155259
  29. Carlos MartinezBehavior Technician1396518445
  30. Daniel Martinez, PT, DPTPhysical Therapist1134725617
  31. David Martinez, DOFamily Medicine Physician1023105178
  32. Jason MartinezCase Manager/Care Coordinator1669251591
  33. Jose MartinezAddiction (Substance Use Disorder) Counselor1174806541
  34. Jossilyn MartinezBehavior Technician1578409637
  35. Karen MartinezLicensed Vocational Nurse1245018316
  36. Lizeth MartinezMarriage & Family Therapist1811232325
  37. Lnira MartinezBehavior Technician1295495893
  38. Maribel MartinezAddiction (Substance Use Disorder) Counselor1316377344
  39. Marla MartinezBehavior Technician1154188175
  40. Mary Ann Martinez, OTR/L, CHTOccupational Therapist1265623029
  41. Selina Martinez, DOFamily Medicine Physician1003565185
  42. Yelena MartinezBehavior Technician1538868039
  43. Yelena Martinez, PHARMDPharmacist1376374819
  44. Yesiedid MartinezBehavior Technician1043964265
  45. Angel Martinez De La CruzBehavior Technician1942982491
  46. Adriana Martinez-ChavezClinical Social Worker1386794238
  47. Douglass Marum, PHD MARRIAGE AND FAMMarriage & Family Therapist1598948523
  48. Timberlin MarziBehavior Technician1083481790
  49. Maris Maslow-ShieldsBehavior Technician1801601539
  50. Daniel Masluk, M.D.Anesthesiology Physician1619906708

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Napa, California appears in the CMS National Plan and Provider Enumeration System with 3,583 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 Napa - 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 Napa 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 Napa is weighted toward Behavior Technician (990 clinicians, followed by Marriage & Family Therapist with 187 and Clinical Social Worker with 147). 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 California's population, Napa reports roughly 9.2 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.

Of California's most common specialties, Behavior Analyst is the most prominent one with no provider currently listing a Napa practice address, a coverage gap Napa patients typically fill by traveling to a larger nearby hub.

For Napa 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 Napa, CA?

There are 3,583 registered healthcare providers in Napa, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Napa?

The most common specialties in Napa are Behavior Technician, Marriage & Family Therapist, Clinical Social Worker, Case Manager/Care Coordinator, Clinical Psychologist. Behavior Technician has the most providers with 990.

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.