NPPES file of Aug 9, 2026

Doctors and health care providers in Los Alamitos, CA

1,035 individual NPPES records list a practice address in Los Alamitos, 183rd of 812 California cities. The largest group is marriage & family therapist: 105, 10% of the city's records, against 6% across California. Page 14 of 21.

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

Los Alamitos in California

  • Rank in California183rd of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups23.3% of all records

Compared with California as a whole, Los Alamitos has 7× the state's share of speech-language assistant records and 0.36× its share of behavior technician records.

Providers in Los Alamitos, alphabetically

  1. Rebekah Neal-Kraal, M.D.Rheumatology Physician1215165667
  2. Janise Nekoranec, PH.D.Cognitive & Behavioral Psychologist1831439652
  3. Richard Nelson, O.D.Optometrist1518065689
  4. Michele Nelson-Chung, LMFTMarriage & Family Therapist1548704612
  5. Talin Nemri, M.D.Internal Medicine Physician1891138269
  6. Sidney Newman, M.D.Specialist1235222860
  7. Oanh Ngo, PT, DPTOrthopedic Physical Therapist1104136662
  8. Bao-Chau Nguyen, MSMarriage & Family Therapist1578811600
  9. Christine Nguyen, NP-CFamily Nurse Practitioner1205392867
  10. Chung Nguyen, LCSWClinical Social Worker1316263932
  11. Denny NguyenSpeech-Language Assistant1912517624
  12. Jennie NguyenSpeech-Language Assistant1104653930
  13. Kim Nguyen, PHARM.DPharmacist1053776898
  14. Ly Nguyen, MSHand Occupational Therapist1346038270
  15. Phuonghong NguyenPharmacist1174187355
  16. Tammy Nguyen, PA-CPhysician Assistant1326682428
  17. Thai-Van Nguyen, M.D.Gastroenterology Physician1427082890
  18. Thi NguyenDentist1902505076
  19. Thomas Nguyen, M.D.Anesthesiology Physician1356322861
  20. Thuong-Phuong Nguyen, M.D.Psychiatry Physician1093009565
  21. Young Nguyen, MSW, LCSWClinical Social Worker1386867950
  22. Calvin Nguyen-Ho, MDAnesthesiology Physician1174100176
  23. Dalia Niknam, D.D.S.Dentist1841492576
  24. Peggy Nunes, RADTAddiction (Substance Use Disorder) Counselor1497247639
  25. Iweni Nwengela, PHARMD.Pharmacist1487164976
  26. Ryan O'DonellPsychiatric/Mental Health Nurse Practitioner1124679253
  27. Amanda O'NealMarriage & Family Therapist1023482866
  28. Timothy O'Neill, M.D.Cardiovascular Disease Physician1467493155
  29. Raymond Oca, DCChiropractor1316061930
  30. Xochitl OchoaBehavior Technician1356263545
  31. Elizabeth OdomAddiction (Substance Use Disorder) Counselor1548767882
  32. Sheila Oertwich Brown, LMFTMarriage & Family Therapist1760854566
  33. Lauren OgataOptometrist1790312064
  34. Saeko OkumuraBehavior Technician1487547535
  35. Craig Olsen, M.D.Endocrinology, Diabetes & Metabolism Physician1477529758
  36. Omid Omidvar, M.D.Neurology Physician1184678583
  37. Tracie Onaha-Nguyen, PHARM. D.Pharmacist1841467107
  38. Philip Oncley, PHDPsychologist1689692832
  39. Gay Opatrny, AUAudiologist-Hearing Aid Fitter1811171549
  40. Danielle Organista, LMFTMarriage & Family Therapist1568632487
  41. Robert Orkin, PSY.D.Psychologist1952478570
  42. Jennifer OrourkeAddiction (Substance Use Disorder) Counselor1770283012
  43. Donna OsbornLicensed Vocational Nurse1225302946
  44. Assad Oskuei, M.D.Pulmonary Disease Physician1528313210
  45. Arnold Ostrow, M.D.Specialist1932147824
  46. Lawrence Ota, D.D.S.Endodontics1700092244
  47. Alexis OtooleSchool Psychologist1013892504
  48. Adrian PadillaAddiction (Substance Use Disorder) Counselor1699247171
  49. Nelson Pai, DDSGeneral Practice Dentistry1104967959
  50. Jeannette Painovich, MA LACAcupuncturist1831222322

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

Los Alamitos, California appears in the CMS National Plan and Provider Enumeration System with 1,035 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 Los Alamitos - 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 Los Alamitos 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 Los Alamitos is weighted toward Marriage & Family Therapist (105 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 71 and Behavior Technician with 65). 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, Los Alamitos reports roughly 2.7 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Los Alamitos practice address, a coverage gap Los Alamitos patients typically fill by traveling to a larger nearby hub.

For Los Alamitos 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 Los Alamitos, CA?

There are 1,035 registered healthcare providers in Los Alamitos, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Los Alamitos?

The most common specialties in Los Alamitos are Marriage & Family Therapist, Addiction (Substance Use Disorder) Counselor, Behavior Technician, Internal Medicine Physician, Physical Therapist. Marriage & Family Therapist has the most providers with 105.

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.