NPPES file of Aug 9, 2026

Doctors and health care providers in Aliso Viejo, CA

568 individual NPPES records list a practice address in Aliso Viejo, 269th of 812 California cities. The largest group is marriage & family therapist: 37, 7% of the city's records, against 6% across California. Page 8 of 12.

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

The 8 largest groups in Aliso Viejo

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

Aliso Viejo in California

  • Rank in California269th of 812 cities by records
  • Share of the state<0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups18% of all records

Compared with California as a whole, Aliso Viejo has 3.4× the state's share of massage therapist records and 0.19× its share of behavior technician records.

Providers in Aliso Viejo, alphabetically

  1. Michael Mostofi, D.D.S.General Practice Dentistry1275648909
  2. Lauren Mott, ATCAthletic Trainer1437607819
  3. Kelly Mountain, PA-CPhysician Assistant1205420312
  4. Rosemary MoyaBehavior Technician1689512501
  5. Roxanna MunozDoula1194680280
  6. Robert Murray, DDSGeneral Practice Dentistry1295946317
  7. Nicole Murzen, MS, ATCAthletic Trainer1306354352
  8. Angela Myles, MASSAGE THERAPISTMassage Therapist1891432480
  9. Tanushree Nair, DOFamily Medicine Physician1437730876
  10. Brenda NakanoOccupational Therapist1427591973
  11. Ned Nakatsuka, D.D.S.General Practice Dentistry1396846804
  12. Sepideh Namvar, PHARM.D.Pharmacist1124573043
  13. Seyed Amir NazemzadehrazaviMarriage & Family Therapist1790630937
  14. Mihaela NedejdeMassage Therapist1780291682
  15. Dawn Nelson De Ramirez, MS MFTMental Health Counselor1376963926
  16. Beatrice Nguyen, PPSSchool Counselor1629905534
  17. Bryant Nguyen, DDSGeneral Practice Dentistry1003125204
  18. Kevin NguyenPharmacist1619568391
  19. Lananh Nguyen, PHARM.D.Pharmacist1497032254
  20. Minh Tri NguyenPharmacist1043175110
  21. Nick Nguyen, DDSDentist1649340274
  22. Thu Nguyen, MDFamily Medicine Physician1114422888
  23. Peter Nierman, M.D.Child & Adolescent Psychiatry Physician1801994769
  24. Ameneh NikzadDriver1235751421
  25. Benjamin NilesAddiction (Substance Use Disorder) Counselor1427423029
  26. Shannon O'Connor, M.DFamily Medicine Physician1861586554
  27. Dennis O'Malley, M.D.Clinical Pathology/Laboratory Medicine Physician1184681223
  28. Amy O'Neill, LCSWClinical Social Worker1124110028
  29. Vanessa Odom, RN, IBCLCRegistered Nurse1598588782
  30. Terence Offenberger, MDInternal Medicine Physician1023009586
  31. Michele Okonski, PSY.D.Psychologist1982171716
  32. Holly Ann Olalia, DNP, PMHNPPsychiatric/Mental Health Nurse Practitioner1538751409
  33. Holly Olsen, DPTPhysical Medicine & Rehabilitation Physician1235765975
  34. Sandra OrtizMedical-Surgical Registered Nurse1508603747
  35. Michael Otoupalik, D.C.Sports Physician Chiropractor1841263340
  36. Lauren Pai, PT DPTPhysical Therapist1689390502
  37. Kacey Palfreyman, CMTMassage Therapist1538810858
  38. Daniel Parker, D.C.Chiropractor1073694725
  39. Molly ParsonsFamily Nurse Practitioner1831585272
  40. Melody PaschenClinical Social Worker1194399030
  41. Kajol PatelBehavior Technician1720799828
  42. Sajit Patel, DMDGeneral Practice Dentistry1265503460
  43. David Peirce, PHDClinical Psychologist1043417579
  44. Frederick Perez, RN, CEN, NP-CFamily Nurse Practitioner1760017479
  45. Apirada Petchpud, DDSDentist1598820953
  46. Elise Pham, DMDDentist1093199598
  47. Peter Phan, MDNuclear Medicine Physician1811195563
  48. Sarah PhanAddiction (Substance Use Disorder) Counselor1801381694
  49. Andrea PixleySpeech-Language Pathologist1659769180
  50. Gisella Plaza, RPTPhysical Therapist1043803174

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

Aliso Viejo, California appears in the CMS National Plan and Provider Enumeration System with 568 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 Aliso Viejo - 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 Aliso Viejo 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 Aliso Viejo is weighted toward Marriage & Family Therapist (37 clinicians, followed by Physical Therapist with 35 and Pharmacist with 30). 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, Aliso Viejo reports roughly 1.5 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Aliso Viejo practice address, a coverage gap Aliso Viejo patients typically fill by traveling to a larger nearby hub.

For Aliso Viejo 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 Aliso Viejo, CA?

There are 568 registered healthcare providers in Aliso Viejo, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Aliso Viejo?

The most common specialties in Aliso Viejo are Marriage & Family Therapist, Physical Therapist, Pharmacist, General Practice Dentistry, Dentist. Marriage & Family Therapist has the most providers with 37.

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.