NPPES file of Aug 9, 2026

Doctors and health care providers in Eureka, CA

2,854 individual NPPES records list a practice address in Eureka, 79th of 812 California cities. The largest group is case manager/care coordinator: 492, 17% of the city's records, against 2% across California. Page 32 of 58.

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

Eureka in California

  • Rank in California79th of 812 cities by records
  • Share of the state0.3% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups30.3% of all records
  • Case Manager/Care Coordinator rank10th of the 10 California cities with the most

Compared with California as a whole, Eureka has 27.3× the state's share of psychiatric/mental health registered nurse records and 0.15× its share of behavior technician records.

Providers in Eureka, alphabetically

  1. Tracy Marshall, LCSWClinical Social Worker1114463965
  2. Elizabeth Martella, LVNLicensed Vocational Nurse1912336678
  3. Annie MartensStudent in an Organized Health Care Education/Training Program1659255099
  4. Deborah MartinCommunity Health Worker1982418265
  5. Eric Martin, B.A.Case Manager/Care Coordinator1346592672
  6. Hannah Martin, ACSWClinical Social Worker1760170872
  7. Jared MartinCase Manager/Care Coordinator1245416072
  8. Karley Martin, RASAddiction (Substance Use Disorder) Counselor1770826562
  9. Kristen Martin, LMFTMarriage & Family Therapist1265853899
  10. Lia Martin, RADTAddiction (Substance Use Disorder) Counselor1568228666
  11. Nicholas MartinCommunity Health Worker1467269589
  12. Tyler Martin, RNCommunity Health Registered Nurse1477232700
  13. April Martinez, RNPsychiatric/Mental Health Registered Nurse1144771163
  14. Gilberto MartinezCase Manager/Care Coordinator1205475316
  15. Leticia Martinez, LVNRegistered Nurse1407203102
  16. Mariah MartinezDay Training/Habilitation Specialist1881546166
  17. Shayan Mashayekhi, MDStudent in an Organized Health Care Education/Training Program1447191952
  18. Faith Mason, MAMarriage & Family Therapist1700018496
  19. Amanda Masse-Bachelier, APCCMental Health Counselor1487463006
  20. Tai MassionCase Manager/Care Coordinator1336446459
  21. John Mastroni, MDOphthalmology Physician1568420008
  22. Karina Mata OchoaCase Manager/Care Coordinator1427315811
  23. Allen Mathew, MDNephrology Physician1417053075
  24. Sharon Mathis, R.N.Psychiatric/Mental Health Registered Nurse1508201096
  25. Blythe MatiasCommunity Health Worker1538631312
  26. Angelica Matias-RodriguezBehavior Analyst1699343962
  27. Theresa Matocha, LISCWClinical Social Worker1639415300
  28. James Matsuda, MDPediatrics Physician1720066061
  29. Heather MatthiasCommunity Health Worker1194109611
  30. Kelly Mattila, DPTGeriatric Physical Therapist1861738833
  31. Deborah MattsonRegistered Nurse1154756245
  32. Johna May, RNPsychiatric/Mental Health Registered Nurse1629698139
  33. Melissa MayberryPsychiatric/Mental Health Registered Nurse1275813925
  34. Cayla MayerClinical Social Worker1841975240
  35. Evelyn MayfieldPeer Specialist1427717271
  36. Jacqueline Mayrand, M.A., MFTMarriage & Family Therapist1861528697
  37. Kayla Mc TearPsychiatric/Mental Health Registered Nurse1497623953
  38. Laura McArdleClinical Social Worker1508474107
  39. Joni McAtee, MDFamily Medicine Physician1689971814
  40. Courtney McCans, RN, BSNPsychiatric/Mental Health Registered Nurse1750634135
  41. Erin McCarthy, LCSWClinical Social Worker1902157613
  42. Tammy McCarthy, SLPSpeech-Language Pathologist1134859432
  43. Kuby McCartyRegistered Nurse1871946335
  44. Sharon McClainBehavior Analyst1386113256
  45. Myles McClureCase Manager/Care Coordinator1982007696
  46. Stacey McClure, COTAOccupational Therapy Assistant1932598190
  47. Lisa McCombsAddiction (Substance Use Disorder) Counselor1578071429
  48. Jane McCord, RNCase Management Registered Nurse1487992558
  49. Amber McCormickBehavior Technician1770118531
  50. Dolli McCoveyDoula1154252427

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

Eureka, California appears in the CMS National Plan and Provider Enumeration System with 2,854 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 Eureka - 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 Eureka 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 Eureka is weighted toward Case Manager/Care Coordinator (492 clinicians, followed by Psychiatric/Mental Health Registered Nurse with 206 and Marriage & Family Therapist with 167). 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, Eureka reports roughly 7.3 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 Eureka practice address, a coverage gap Eureka patients typically fill by traveling to a larger nearby hub.

For Eureka 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 Eureka, CA?

There are 2,854 registered healthcare providers in Eureka, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Eureka?

The most common specialties in Eureka are Case Manager/Care Coordinator, Psychiatric/Mental Health Registered Nurse, Marriage & Family Therapist, Clinical Social Worker, Registered Nurse. Case Manager/Care Coordinator has the most providers with 492.

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.