NPPES file of Aug 9, 2026

Doctors and health care providers in Martinez, CA

1,816 individual NPPES records list a practice address in Martinez, 127th of 812 California cities. The largest group is family medicine physician: 191, 11% of the city's records, against 2% across California. Page 13 of 37.

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

Martinez in California

  • Rank in California127th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups23.8% of all records

Compared with California as a whole, Martinez has 32.9× the state's share of case management registered nurse records and 0.19× its share of behavior technician records.

Providers in Martinez, alphabetically

  1. Cindy GonzalezClinical Social Worker1093915050
  2. Erik Gonzalez, M.D.Student in an Organized Health Care Education/Training Program1447632898
  3. Ruben Gonzalez, M.DFamily Medicine Physician1710219738
  4. Elizabeth Goodyear, RNC, IBCLCCase Management Registered Nurse1790966117
  5. Amy Gordon, M.D.Family Medicine Physician1528123692
  6. Susan GoreMarriage & Family Therapist1942538491
  7. Erika Gorman, RNRegistered Nurse1861077794
  8. Oliver GrahamInternal Medicine Physician1972705424
  9. Joellen GraultyCounselor1922136597
  10. Wilhamenia GraySocial Worker1992061287
  11. Victoria Gray DickersonDay Training/Habilitation Specialist1326891334
  12. Denisha GraysonBehavior Analyst1528576014
  13. Allison GreenDoula1588542773
  14. Erysse GreenBehavior Technician1386236628
  15. Genevieve Green, MFTIMarriage & Family Therapist1285912006
  16. Tavean Green, ATP, OTRLOccupational Therapist1457476335
  17. Jacqueline Green-Garvey, LCSWClinical Social Worker1083097604
  18. Caitlin Greene, MPH, RDRegistered Dietitian1942574108
  19. Lauren Greene, MA, AMFTMarriage & Family Therapist1306354428
  20. Joanna Greenwood, RN, PHNCase Management Registered Nurse1700067857
  21. Kennedy GreerDay Training/Habilitation Specialist1467313841
  22. Neil GregorPhysical Therapist1891185781
  23. Barbara GriesauFamily Medicine Physician1609934884
  24. Natasha Griffin, LMFTMental Health Counselor1255947024
  25. Betty Griffith, RN, BSN, PHNHome Health Registered Nurse1568623254
  26. Regina Griffiths, LCSWClinical Social Worker1326476391
  27. Julie Grisham, MDDiagnostic Radiology Physician1477714582
  28. William Guerin, MDStudent in an Organized Health Care Education/Training Program1245760578
  29. Angela Guerra, RN, PHNCase Management Registered Nurse1255512653
  30. Jesus Guerra, BCBABehavior Analyst1528654464
  31. Nery Guerrero, MDFamily Medicine Physician1346866589
  32. Susan Guest, RN, PHNAdministrator Registered Nurse1306026760
  33. Shirley GuidryMental Health Counselor1518749621
  34. Claudia GumataotaoClinical Social Worker1699293027
  35. Indu Gupta, MDInternal Medicine Physician1881766632
  36. Gabriel Gutierrez, MDStudent in an Organized Health Care Education/Training Program1891311015
  37. Matthew Gutierrez, M.D.Family Medicine Physician1639245608
  38. Nikki Ha, FNP-BCFamily Nurse Practitioner1225278138
  39. Kimberley HaglundFamily Medicine Physician1841357720
  40. Grace HagopianCase Management Registered Nurse1184861866
  41. Leah Haile, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1538873351
  42. Neil HaleyAddiction (Substance Use Disorder) Counselor1073734471
  43. Bobby HallCommunity Health Worker1154967370
  44. William HallsteinPsychiatry Physician1093862047
  45. Whitney Halvorsen, NPPsychiatric/Mental Health Nurse Practitioner1881315869
  46. Christina Hamilton, MDFamily Medicine Physician1932457421
  47. Kathryn Hamlin, MDFamily Medicine Physician1457780165
  48. Dorothy Han, MDStudent in an Organized Health Care Education/Training Program1114715364
  49. Lynn Hanks, OTR/LOccupational Therapist1205613759
  50. Rita Hannum, ODOptometrist1639147598

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

Martinez, California appears in the CMS National Plan and Provider Enumeration System with 1,816 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 Martinez - 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 Martinez 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 Martinez is weighted toward Family Medicine Physician (191 clinicians, followed by Pharmacist with 149 and Marriage & Family Therapist with 93). 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, Martinez reports roughly 4.7 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 Martinez practice address, a coverage gap Martinez patients typically fill by traveling to a larger nearby hub.

For Martinez 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 Martinez, CA?

There are 1,816 registered healthcare providers in Martinez, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Martinez?

The most common specialties in Martinez are Family Medicine Physician, Pharmacist, Marriage & Family Therapist, Student in an Organized Health Care Education/Training Program, Case Management Registered Nurse. Family Medicine Physician has the most providers with 191.

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.