NPPES file of Aug 9, 2026

Doctors and health care providers in Grass Valley, CA

1,540 individual NPPES records list a practice address in Grass Valley, 142nd of 812 California cities. The largest group is mental health counselor: 151, 10% of the city's records, against 3% across California. Page 30 of 31.

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

Grass Valley in California

  • Rank in California142nd of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups28.2% of all records

Compared with California as a whole, Grass Valley has 15.1× the state's share of adult companion records and 0.31× its share of student in an organized health care education/training program records.

Providers in Grass Valley, alphabetically

  1. Darlene Weiss, FMP, CNNutritionist1154962611
  2. Carolyn Weisswasser, N.D.Naturopath1114080553
  3. Gregory Weisswasser, NDNaturopath1265595599
  4. Katherine WelchCommunity Health Worker1942075361
  5. Desarae WelchelCounselor1225514532
  6. Tamara Wells, BA, ECSESpecialist1376813386
  7. Brittany WertzCounselor1669942918
  8. Jane WertzCounselor1326505439
  9. Jeffrey West, RADT-1Addiction (Substance Use Disorder) Counselor1245609973
  10. Scott WestAmbulatory Care Pharmacist1124682661
  11. Rhiannon WhitakerCommunity Health Worker1932914181
  12. Ashley WhiteMental Health Counselor1164931481
  13. Emily White, MSWMarriage & Family Therapist1245596659
  14. Kaitlynn WhiteCounselor1033604384
  15. Parker White, D.D.S.General Practice Dentistry1780155663
  16. Kelley WhitecottonLicensed Psychiatric Technician1689021453
  17. Kristen WhiteheadStudent in an Organized Health Care Education/Training Program1952991929
  18. Amber WhitleyRehabilitation Practitioner1609288174
  19. Lovie Whitt, LPTLicensed Psychiatric Technician1043845662
  20. Lisa Whittenburg, MFTMarriage & Family Therapist1295989960
  21. Doris Whittlesey, PA-CMedical Physician Assistant1811034465
  22. Lisa WienerRegistered Nurse1518026582
  23. Dearlene WigginsMental Health Counselor1255818704
  24. Steven Wilbur, M.D.Anesthesiology Physician1811959141
  25. Desiree WilesMental Health Counselor1235615667
  26. Katherine Wilkes, RADTAddiction (Substance Use Disorder) Counselor1902576994
  27. Ashlee WilkinDoula1972374072
  28. Caroline WilkinsonLicensed Vocational Nurse1437977154
  29. Melissa WillettCounselor1336424969
  30. Colleen WilliamsRegistered Nurse1205025590
  31. Demetria WilliamsAddiction (Substance Use Disorder) Counselor1417712076
  32. Donald Williams, DCChiropractor1588680599
  33. Nicole WilliamsLicensed Vocational Nurse1851223408
  34. Suzanne WilliamsHealth & Wellness Coach1689485872
  35. Linda Williams-Coleman, PTAPhysical Therapy Assistant1396171450
  36. Matthew WillisAddiction (Substance Use Disorder) Counselor1104275270
  37. Anna Wilson, D.O.Diagnostic Radiology Physician1447561535
  38. Beverly Wilson, RNC-BSNAdult Psychiatric/Mental Health Registered Nurse1306248372
  39. Madelyn Wilson, RNRegistered Nurse1114870755
  40. Ronald WilsonAddiction (Substance Use Disorder) Counselor1235583048
  41. Lystra Wilson-Celestine, MDObstetrics & Gynecology Physician1003034018
  42. Matthew Wilson-DaleyCase Manager/Care Coordinator1609582865
  43. Mark Winger, DDSGeneral Practice Dentistry1508157843
  44. Halley WinsteadCommunity Health Worker1639802853
  45. Jennifer WintersMental Health Counselor1861901431
  46. Sheradin WintherTechnician1356146757
  47. Sam Wipf, OTR/LOccupational Therapist1629261318
  48. Kenneth WisemanAddiction (Substance Use Disorder) Counselor1053905752
  49. Eric Witherell, PPSSchool Counselor1396547741
  50. Sarah Woerner, M.D.Pediatrics Physician1306861273

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

Grass Valley, California appears in the CMS National Plan and Provider Enumeration System with 1,540 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 Grass Valley - 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 Grass Valley 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 Grass Valley is weighted toward Mental Health Counselor (151 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 148 and Marriage & Family Therapist with 136). 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, Grass Valley reports roughly 4 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 Technician is the most prominent one with no provider currently listing a Grass Valley practice address, a coverage gap Grass Valley patients typically fill by traveling to a larger nearby hub.

For Grass Valley 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 Grass Valley, CA?

There are 1,540 registered healthcare providers in Grass Valley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Grass Valley?

The most common specialties in Grass Valley are Mental Health Counselor, Addiction (Substance Use Disorder) Counselor, Marriage & Family Therapist, Counselor, Physical Therapist. Mental Health Counselor has the most providers with 151.

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.