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 31 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
- Nadia LynnCase Manager/Care Coordinator1649743121
- Kelly LynneCase Manager/Care Coordinator1164792537
- Jeffrey MaPharmacist1467948059
- Nikki Macan, ASWCase Manager/Care Coordinator1699555656
- Darin MacdougallCommunity Health Worker1043089915
- Ian MackenzieCase Manager/Care Coordinator1780244038
- Cindy Madden, MHWMental Health Counselor1184768558
- Margaret MaddenCommunity Health Worker1104205723
- Mary Madden, RNRegistered Nurse1356794366
- Kathleen Madsen, PTAPhysical Therapist1710376678
- Jennifer Mager, B.A.Specialist1255467536
- Michelle MagillCase Manager/Care Coordinator1215065719
- Barbara MagnattaOccupational Therapy Assistant1538557327
- Dianne MagnattaCase Manager/Care Coordinator1225540693
- Abigail MaguireBehavior Technician1255974366
- Kathryn Maguire, R.N.Psychiatric/Mental Health Registered Nurse1578757977
- Marcelle Mahan, M.D.General Practice Physician1245292085
- Timothy Mahanes, MDFamily Medicine Physician1124552658
- Joni Maher, LCSWClinical Social Worker1184048126
- Mary Mahoney, M.D.Surgery Physician1750352621
- Lynne Mahony, RNSchool Registered Nurse1043052202
- Nicole Mahouski, RNRegistered Nurse1457581662
- Terri MajorsCommunity Health Worker1164910055
- Ricky Mak, OTR, LOccupational Therapist1932671062
- Joan MalcuitPsychiatric/Mental Health Registered Nurse1679808414
- Melissa MaldonadoLicensed Vocational Nurse1952724262
- Tiffany MaldonadoCase Manager/Care Coordinator1326389693
- Wade MallettAddiction (Substance Use Disorder) Counselor1942903109
- Trudy MalloryStudent in an Organized Health Care Education/Training Program1740598291
- Patrick MalloyCase Manager/Care Coordinator1619294428
- Julia Mandel, LCSWClinical Social Worker1134586316
- Chandler MangiameliSchool Psychologist1548082217
- Fortunate MangwendePsychiatric/Mental Health Registered Nurse1902612450
- Nicholas MannCounselor1104077866
- Jonathon MansfieldDay Training/Habilitation Specialist1740121284
- Michael MansfieldDay Training/Habilitation Specialist1225824519
- Barbara Marchi, N.P.Women's Health Nurse Practitioner1386684579
- Gregory Margart, MA SLPSpeech-Language Pathologist1609075852
- Lisa MarieCase Manager/Care Coordinator1104047471
- Ln Marie, BACase Manager/Care Coordinator1700077096
- Cena Marino, M.A.Case Manager/Care Coordinator1114053063
- Natalie Marino, M.D.Family Medicine Physician1477856789
- Louise MarkPsychiatric/Mental Health Registered Nurse1427709831
- Tiffany MarmonCommunity Health Worker1841148285
- Candalynn MarquezPsychiatric/Mental Health Registered Nurse1255022521
- Jose Marrero-Castro, RNPsychiatric/Mental Health Registered Nurse1831434737
- Teresita MarroquinCase Manager/Care Coordinator1770966319
- Eva Marshall, M.D.Family Medicine Physician1326009820
- Jonathan MarshallRehabilitation Practitioner1164351235
- Parri MarshallProfessional Counselor1275956419
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.