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 37 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. John Nelson, M.D.Family Medicine Physician1124029319
  2. Kimberly Nelson, MDFamily Medicine Physician1639800279
  3. Melissa Nelson, B.A.Addiction (Substance Use Disorder) Counselor1295158426
  4. Michael NelsonCase Manager/Care Coordinator1477041879
  5. Savana NelsonStudent in an Organized Health Care Education/Training Program1578388971
  6. Linda Nesbitt, LCSWClinical Social Worker1912256835
  7. April NessCase Manager/Care Coordinator1164777561
  8. Cameron NessenCase Manager/Care Coordinator1215667993
  9. Mary Nesset, MA, MFTMarriage & Family Therapist1265550214
  10. Wilson NesterBehavior Technician1942845201
  11. Julia NeumanCounselor1750837134
  12. Rita Newell, MA, LLPCMental Health Counselor1154690485
  13. Alison NewkirkPsychiatric/Mental Health Registered Nurse1336733385
  14. Alicia NewmanCase Manager/Care Coordinator1417425828
  15. Kate Newman, REGISTERED NURSERegistered Nurse1174775738
  16. Menna NewmeyerPsychiatric/Mental Health Registered Nurse1548659469
  17. Paul NgoPharmacist1912395989
  18. Alex Nguyen, RNRegistered Nurse1821914771
  19. Alexander Nguyen, PHARMDPharmacist1053932335
  20. Phuong Nguyen, D.D.S.General Practice Dentistry1205057692
  21. Wendy Nguyen, PHARMDPharmacist1538432208
  22. Sheila NicholasAdult Psychiatric/Mental Health Registered Nurse1720829328
  23. Tammie NicholsCase Manager/Care Coordinator1902554686
  24. William Nichols, MFTMarriage & Family Therapist1891838751
  25. Tim NicollCommunity Health Worker1639821234
  26. Brandon Nielsen, MDStudent in an Organized Health Care Education/Training Program1255125886
  27. Jeremy NilsenMarriage & Family Therapist1023153376
  28. Daryn NimmoMarriage & Family Therapist1760819247
  29. Stephanie Noftz, RNRegistered Nurse1457078594
  30. Roberta Nolan, PHD LMFTMarriage & Family Therapist1366575409
  31. Linda Nold, MFTMental Health Counselor1598893448
  32. Gabriel NoonanBehavior Technician1285232900
  33. Kelly NordCase Manager/Care Coordinator1356479927
  34. Victoria NorgrenMental Health Counselor1144037375
  35. Katy Norlin, BACounselor1023201894
  36. Virginia Norling, LCSWClinical Social Worker1205893914
  37. Laurel NorthropCounselor1669793840
  38. Marcia NortonCase Manager/Care Coordinator1861532004
  39. Conner NorwoodCommunity Health Worker1003631409
  40. Deidra Notheis, ATCAthletic Trainer1831571215
  41. Eliza NunezStudent in an Organized Health Care Education/Training Program1922928092
  42. Elizabeth O'Brien, CNM, NPAdvanced Practice Midwife1023133790
  43. Karen O'Connell, RNRegistered Nurse1265725907
  44. Rosa O'Connor, BAClinical Social Worker1043885387
  45. Francisca O'DonnellCase Manager/Care Coordinator1902138944
  46. Marcella O'Flanagan, LCSWClinical Social Worker1952420754
  47. Anna O'Gorman, LCSWClinical Social Worker1699927038
  48. Linda O'Hara-ScottSocial Worker1114258662
  49. Devon O'LearyCase Manager/Care Coordinator1336779883
  50. Elizabeth O'Leary, CWCHealth & Wellness Coach1033097571

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.