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 70 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. Cierra WilliamsDay Training/Habilitation Specialist1326985995
  2. Danielle WilliamsForensic Psychologist1083304562
  3. Isis WilliamsBehavior Technician1982290516
  4. Jasmine WilliamsCommunity Health Worker1821779182
  5. Kiana WilliamsLicensed Vocational Nurse1245009950
  6. Maddisen WilliamsBehavior Technician1407656317
  7. Mara WilliamsAdult Health Nurse Practitioner1861544249
  8. Marc WilliamsCase Manager/Care Coordinator1013749886
  9. Marietta Williams, MS, CCC-SLPSpeech-Language Pathologist1376062422
  10. Nolan WilliamsPsychiatry Physician1811339641
  11. Patti Williams, L.C.S.W.Clinical Social Worker1457432668
  12. Phaedra WilliamsDay Training/Habilitation Specialist1932026663
  13. Rachael WilliamsRehabilitation Practitioner1811420359
  14. Robert Williams, D.D.S.General Practice Dentistry1457439911
  15. Sariyah WilliamsBehavior Technician1932887320
  16. Shelby WilliamsBehavior Technician1639010077
  17. Courtney WillisMental Health Counselor1205781283
  18. Tara WilmothBehavior Technician1891654992
  19. Eleni Wilske, MS, CCC-SLPSpeech-Language Pathologist1942199963
  20. Andrew Wilson, PAPhysician Assistant1982347522
  21. Charles WilsonDay Training/Habilitation Specialist1841184116
  22. Douglas Wilson, MDFamily Medicine Physician1285693572
  23. Jennifer Wilson, MDFamily Medicine Physician1558378984
  24. Laurie Wilson, PH.D.Psychologist1932276243
  25. Michele Wilson, MDInternal Medicine Physician1902984743
  26. Mishawn WilsonCase Manager/Care Coordinator1417614140
  27. Natalie Wilson, RDRegistered Dietitian1144946716
  28. Ruth Wilson, M.D.Internal Medicine Physician1407822331
  29. Saniyah WilsonBehavior Technician1326723123
  30. Silvie WilsonMarriage & Family Therapist1346634581
  31. Zamar WilsonCase Manager/Care Coordinator1417681867
  32. Jennifer Wilson-HeunFamily Nurse Practitioner1124243472
  33. Katie Winchell, DPTPediatric Physical Therapist1639537046
  34. Gregory Wingren, O.D.Optometrist1164857140
  35. Melissa Winkelhaus, NPNurse Practitioner1609557149
  36. Julie Winn, PSYDClinical Psychologist1558301507
  37. Julie Winter, MDInternal Medicine Physician1538247358
  38. Monica Winters, RN, CNLRegistered Nurse1699058677
  39. Jayme Wise, LCSWClinical Social Worker1104253913
  40. Kathleen Wishart, FNPFamily Nurse Practitioner1427084011
  41. Margaret WitterClinical Social Worker1073044400
  42. Carol WohlerPsychiatric/Mental Health Registered Nurse1609474048
  43. Michlene Wojcieszak, MFTMarriage & Family Therapist1528129244
  44. Anne Wolff, PH.DFamily Psychologist1083888689
  45. Jonathan Wommack, D.D.S.General Practice Dentistry1558538603
  46. Linda Wommack, MDPediatrics Physician1396823126
  47. Andrea Wong, M.D.Internal Medicine Physician1841229317
  48. Andrew Wong, MDInterventional Cardiology Physician1578543963
  49. Don Wong, MDPediatrics Physician1265463442
  50. Janelle Wong, MDFamily Medicine Physician1760001945

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.