NPPES file of Aug 9, 2026

Doctors and health care providers in Petaluma, CA

1,856 individual NPPES records list a practice address in Petaluma, 122nd of 812 California cities. The largest group is behavior technician: 549, 30% of the city's records, against 18% across California. Page 22 of 38.

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

The 8 largest groups in Petaluma

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Petaluma in California

  • Rank in California122nd of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups42.5% of all records

Compared with California as a whole, Petaluma has 12.6× the state's share of other technician records and 0.26× its share of student in an organized health care education/training program records.

Providers in Petaluma, alphabetically

  1. Bonni Massa, M.D.Obstetrics & Gynecology Physician1508933607
  2. Melissa Mata-DuranBehavior Technician1013570456
  3. Jacquelyn MatthewsBehavior Technician1609345768
  4. Felicia Matto-Shepard, MFTMarriage & Family Therapist1679626980
  5. Jimmy Matto-Shepard, PH.D.Psychologist1205036357
  6. Katherine MayMarriage & Family Therapist1760030258
  7. Matthew Mayeda, DO, MPHFamily Medicine Physician1376122804
  8. Alexander Mayer, LCSWMental Health Counselor1063088185
  9. Greggory MayneMarriage & Family Therapist1851529648
  10. George MayoBehavior Technician1508788399
  11. Orlando MayoIndependent Duty Medical Technicians1396947651
  12. George McCall, MEDICMilitary Health Care Provider1710018171
  13. Cruz McCallisterCommunity Health Worker1396188421
  14. Judith McCarthy, MDObstetrics & Gynecology Physician1770667750
  15. Nichole McCarthyOther Technician1962647396
  16. Brianna McCloudBehavior Technician1306323183
  17. Jordyn McCordBehavior Technician1548142409
  18. Kathleen McCormick, LCSWClinical Social Worker1225164585
  19. Jeffrey McCoyOther Technician1154598647
  20. Michael McCoyBehavior Technician1952863755
  21. Mary McCrystal, LMFTMarriage & Family Therapist1710140371
  22. Cassidy McCurdy, OTR/LOccupational Therapist1215395561
  23. Tiana McDowell, M.A.Speech-Language Pathologist1578905535
  24. Melanie McDuffieBehavior Technician1760978696
  25. Georgia McGinnCounselor1073921904
  26. Jacqueline McGrath, NDNaturopath1427488196
  27. Brittani McKemyBehavior Technician1194387803
  28. Livinia McKibbenBehavior Technician1669125340
  29. Eleanor McLaughlin, FNPFamily Nurse Practitioner1548479181
  30. Dennis McLeod, MDOtolaryngology Physician1407919939
  31. Rebecca McLeod-Waldo, CNMAdvanced Practice Midwife1750514766
  32. Elizabeth McManusBehavior Technician1255210670
  33. Meghan McMillan, LCSWCase Manager/Care Coordinator1538298302
  34. James McNultyHealth Information Technician1205243474
  35. Amanda McPherson, RBTBehavior Technician1255807137
  36. Amy Medrano MorenoBehavior Technician1912842527
  37. Rica MeeksOther Technician1174770507
  38. Ira Meinhofer, BCBABehavior Analyst1821639253
  39. Haley MeitnerBehavior Technician1588348387
  40. Danielle MelanephySpeech-Language Pathologist1376055053
  41. Jesus Melchor CeballosBehavior Technician1871153387
  42. Annika MellenBehavior Technician1184427395
  43. Andrea MellerMarriage & Family Therapist1336822139
  44. Julia MelodyClinical Psychologist1144265851
  45. Zelzin MenaBehavior Technician1851864730
  46. Nancy Mena-BellMarriage & Family Therapist1679774954
  47. Valerie Mendels, L.AC.Acupuncturist1477882926
  48. Miguelina MendezBehavior Technician1083108344
  49. Stephanie Mendez, RDNRegistered Dietitian1003697400
  50. Sarahi Mendez GonzalezBehavior Technician1568383743

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

Petaluma, California appears in the CMS National Plan and Provider Enumeration System with 1,856 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 Petaluma - 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 Petaluma 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 Petaluma is weighted toward Behavior Technician (549 clinicians, followed by Marriage & Family Therapist with 185 and Counselor with 54). 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, Petaluma reports roughly 4.8 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Petaluma practice address, a coverage gap Petaluma patients typically fill by traveling to a larger nearby hub.

For Petaluma 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 Petaluma, CA?

There are 1,856 registered healthcare providers in Petaluma, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Petaluma?

The most common specialties in Petaluma are Behavior Technician, Marriage & Family Therapist, Counselor, Family Nurse Practitioner, Other Technician. Behavior Technician has the most providers with 549.

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.