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.
The 8 largest groups in Eureka
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
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
- John Nelson, M.D.Family Medicine Physician1124029319
- Kimberly Nelson, MDFamily Medicine Physician1639800279
- Melissa Nelson, B.A.Addiction (Substance Use Disorder) Counselor1295158426
- Michael NelsonCase Manager/Care Coordinator1477041879
- Savana NelsonStudent in an Organized Health Care Education/Training Program1578388971
- Linda Nesbitt, LCSWClinical Social Worker1912256835
- April NessCase Manager/Care Coordinator1164777561
- Cameron NessenCase Manager/Care Coordinator1215667993
- Mary Nesset, MA, MFTMarriage & Family Therapist1265550214
- Wilson NesterBehavior Technician1942845201
- Julia NeumanCounselor1750837134
- Rita Newell, MA, LLPCMental Health Counselor1154690485
- Alison NewkirkPsychiatric/Mental Health Registered Nurse1336733385
- Alicia NewmanCase Manager/Care Coordinator1417425828
- Kate Newman, REGISTERED NURSERegistered Nurse1174775738
- Menna NewmeyerPsychiatric/Mental Health Registered Nurse1548659469
- Paul NgoPharmacist1912395989
- Alex Nguyen, RNRegistered Nurse1821914771
- Alexander Nguyen, PHARMDPharmacist1053932335
- Phuong Nguyen, D.D.S.General Practice Dentistry1205057692
- Wendy Nguyen, PHARMDPharmacist1538432208
- Sheila NicholasAdult Psychiatric/Mental Health Registered Nurse1720829328
- Tammie NicholsCase Manager/Care Coordinator1902554686
- William Nichols, MFTMarriage & Family Therapist1891838751
- Tim NicollCommunity Health Worker1639821234
- Brandon Nielsen, MDStudent in an Organized Health Care Education/Training Program1255125886
- Jeremy NilsenMarriage & Family Therapist1023153376
- Daryn NimmoMarriage & Family Therapist1760819247
- Stephanie Noftz, RNRegistered Nurse1457078594
- Roberta Nolan, PHD LMFTMarriage & Family Therapist1366575409
- Linda Nold, MFTMental Health Counselor1598893448
- Gabriel NoonanBehavior Technician1285232900
- Kelly NordCase Manager/Care Coordinator1356479927
- Victoria NorgrenMental Health Counselor1144037375
- Katy Norlin, BACounselor1023201894
- Virginia Norling, LCSWClinical Social Worker1205893914
- Laurel NorthropCounselor1669793840
- Marcia NortonCase Manager/Care Coordinator1861532004
- Conner NorwoodCommunity Health Worker1003631409
- Deidra Notheis, ATCAthletic Trainer1831571215
- Eliza NunezStudent in an Organized Health Care Education/Training Program1922928092
- Elizabeth O'Brien, CNM, NPAdvanced Practice Midwife1023133790
- Karen O'Connell, RNRegistered Nurse1265725907
- Rosa O'Connor, BAClinical Social Worker1043885387
- Francisca O'DonnellCase Manager/Care Coordinator1902138944
- Marcella O'Flanagan, LCSWClinical Social Worker1952420754
- Anna O'Gorman, LCSWClinical Social Worker1699927038
- Linda O'Hara-ScottSocial Worker1114258662
- Devon O'LearyCase Manager/Care Coordinator1336779883
- Elizabeth O'Leary, CWCHealth & Wellness Coach1033097571
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.