2026 data CMS NPPES NUCC Taxonomy

Doctors in Los Alamitos, CA

Active healthcare providers in Los Alamitos sourced from the CMS NPPES weekly file — no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

995
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Marriage & Family Therapist
Top specialty
94 providers
California
State
CA

995 healthcare providers across 20 specialties

Los Alamitos, California appears in the CMS National Plan and Provider Enumeration System with 995 registered healthcare providers spanning 20 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.

The provider mix in Los Alamitos is weighted toward Marriage & Family Therapist (94 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 75 and Behavior Technician with 44). 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 2.6 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.

For Los Alamitos patients, this directory is most useful as a starting shortlist — searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

995
Providers
20
Specialties
2.6
Per 100K (state)

Which specialties are most common in Los Alamitos

Marriage & Family Therapist 94
Addiction (Substance Use Disorder) Counselor 75
Behavior Technician 44
Internal Medicine Physician 40
Physical Therapist 37
General Practice Dentistry 29
Physician Assistant 26
Dentist 26
Chiropractor 25
Mental Health Counselor 22
Clinical Social Worker 21
Family Nurse Practitioner 20
Clinical Psychologist 20
Family Medicine Physician 19
Emergency Medicine Physician 19
Speech-Language Assistant 18
Pharmacist 18
Specialist 17
Speech-Language Pathologist 15
School Psychologist 14

Healthcare Providers (Page 14)

Name
RYAN O'DONELL
Psychiatric/Mental Health Nurse Practitioner
AMANDA O'NEAL
Mental Health Counselor
TIMOTHY O'NEILL, M.D.
Cardiovascular Disease Physician
RAYMOND OCA, DC
Chiropractor
ELIZABETH ODOM
Addiction (Substance Use Disorder) Counselor
SHEILA OERTWICH BROWN, LMFT
Counselor
LAUREN OGATA
Optometrist
SAEKO OKUMURA
Behavior Technician
CRAIG OLSEN, M.D.
Endocrinology, Diabetes & Metabolism Physician
OMID OMIDVAR, M.D.
Neurology Physician
TRACIE ONAHA-NGUYEN, PHARM. D.
Pharmacist
PHILIP ONCLEY, PHD
Psychologist
GAY OPATRNY, AU
Audiologist-Hearing Aid Fitter
DANIELLE ORGANISTA, LMFT
Marriage & Family Therapist
ROBERT ORKIN, PSY.D.
Psychologist
JENNIFER OROURKE
Addiction (Substance Use Disorder) Counselor
DONNA OSBORN
Licensed Vocational Nurse
ASSAD OSKUEI, M.D.
Pulmonary Disease Physician
ARNOLD OSTROW, M.D.
Specialist
LAWRENCE OTA, D.D.S.
Endodontics
ALEXIS OTOOLE
School Psychologist
ADRIAN PADILLA
Addiction (Substance Use Disorder) Counselor
NELSON PAI, DDS
General Practice Dentistry
JEANNETTE PAINOVICH, MA LAC
Acupuncturist
LAWRENCE PALETZ, M.D.
Urology Physician
TRACY PALMERO, LMFT
Marriage & Family Therapist
LORI PALOMBI, M.A. AMFT
Marriage & Family Therapist
ANAIS PALOMO
Behavior Technician
JESSICA PANDO
Addiction (Substance Use Disorder) Counselor
TAPAN PANDYA, MD
Critical Care Medicine (Internal Medicine) Physician
EUGENE PANTANGCO, M.D.
Gastroenterology Physician
MARK PARILLA
Physical Therapy Assistant
CHRISTINA PARK, LCSW, PPS
Mental Health Counselor
EDWARD PARK, D.O.
Student in an Organized Health Care Education/Training Program
EUGENE PARK
Behavior Technician
SARAH PARK, N.P.-C
Family Nurse Practitioner
JEFFREY PASH
Marriage & Family Therapist
AVANI PATEL, OD
Optometrist
KINNARI PATEL
Pharmacist
NIRAV PATEL, M.D.
Neurology Physician
NISHA PATEL, NP
Rheumatology Physician
HEATHER PATZ, PA-C
Physician Assistant
DEBORAH PAUER, MD
Family Medicine Physician
TAMI PAYNE, PT
Physical Therapist
KAYLEY PEACOCK, LEP, PPS
Psychologist
ANTHONY PEAIRS, PTA
Physical Therapy Assistant
HEATHER PEARMAN, MFT
Marriage & Family Therapist
RICHARD PEDERSON, MD
Diagnostic Radiology Physician
MIKAELA BRIANA PENALONZO
Speech-Language Assistant
RONALD PEPITONE, M.D.
Internal Medicine Physician

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Los Alamitos, CA?
There are 995 registered healthcare providers in Los Alamitos, CA, covering 20 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 94.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.