2026 data CMS NPPES NUCC Taxonomy

Doctors in Los Angeles, CA

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

67,148
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
7,609 providers
California
State
CA

Where this city sits in the corpus

Los Angeles ranks 1st among 805 California cities by CMS provider count, holding 7.2% of the state's NPIs, led by Student in an Organized Health Care Education/Training Program.

67,148
NPPES providers in city
1st
of 805 CA cities
7.2%
of California providers
23.9%
in top 3 specialties

Los Angeles ranks #1 of 10 California cities for Student in an Organized Health Care Education/Training Program.

Where Los Angeles ranks among California cities

Provider count vs every California city in CMS NPPES (805 cities)

67,148 Top 1% higher than 99% of 805 cities

0–200: 398 cities (49%). Below this entry. 200–400: 103 cities (13%). Below this entry. 400–600: 45 cities (6%). Below this entry. 600–800: 48 cities (6%). Below this entry. 800–1,000: 29 cities (4%). Below this entry. 1,000–1,200: 15 cities (2%). Below this entry. 1,200–1,400: 17 cities (2%). Below this entry. 1,400–1,600: 15 cities (2%). Below this entry. 2K+: 135 cities (17%). This entry sits in this band. This city 0 2K+ California cities (providers), bucketed by value

Each bar is a band; taller bars hold more cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS National Plan & Provider Enumeration System (NPPES) · 2026

Specialty mix in Los Angeles

Share of the city's NPPES registrations by NUCC taxonomy

providers

What this shows Student in an Organized Health Care Education/Training Program is the largest specialty (7,609 providers, 11.3% of the city), followed by Behavior Technician.

Source CMS NPPES · city_top_specialties As of 2026

City vs state specialty index

Specialties Los Angeles has more, and fewer, of than California average

Each multiple is this city's share of a specialty divided by that specialty's average share across California , Los Angeles over-indexes student in an organized health care education/training program at 2.3× the state average and under-indexes behavior technician at 0.39×. This reflects local practice structure, not care quality.

How to read this directory & data limitations

Los Angeles, California appears in the CMS National Plan and Provider Enumeration System with 67,148 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 Angeles - 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 Angeles 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 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Los Angeles is weighted toward Student in an Organized Health Care Education/Training Program (7,609 clinicians, followed by Behavior Technician with 4,568 and Marriage & Family Therapist with 3,842). 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 Angeles reports roughly 172.3 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 Los Angeles practice address, a coverage gap Los Angeles patients typically fill by traveling to a larger nearby hub.

For Los Angeles 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.

Which specialties are most common in Los Angeles

Healthcare Providers (Page 293)

Name
Joselyn Diaz, PA-C
Physician Assistant
Julerie Diaz
Rehabilitation Practitioner
Juliana Diaz
Behavior Technician
Kai Diaz
Behavior Technician
Karen Diaz, ACSW
Mental Health Counselor
Karen Diaz
Behavior Technician
Karina Diaz, SUPPORT SPECIALIST
Community Health Worker
Karloz Diaz
Behavior Technician
Kathryn Diaz
Marriage & Family Therapist
Kristal Diaz
Behavior Technician
Laura Diaz, LCSW
Clinical Social Worker
Laura Diaz
Rehabilitation Practitioner
Leoncio Diaz, M.D.
Pulmonary Disease Physician
Liana Diaz, LCSW
Clinical Social Worker
Lourdes Diaz
Case Manager/Care Coordinator
Lucia Diaz
Student in an Organized Health Care Education/Training Program
Luis Diaz
Case Manager/Care Coordinator
Luz Diaz
Ambulatory Care Registered Nurse
Maribel Diaz, LCSW
Clinical Social Worker
Marlon Diaz
Community Health Worker
Martha Diaz, LMFT
Marriage & Family Therapist
Melina Diaz
Case Manager/Care Coordinator
Melissa Diaz
Behavior Technician
Miguel Diaz
Rehabilitation Practitioner
Natalia Diaz
Student in an Organized Health Care Education/Training Program
Noel Diaz, PSY.D.
Psychologist
Olga Diaz, MD
Obstetrics & Gynecology Physician
Parris Diaz
Student in an Organized Health Care Education/Training Program
Patricia Diaz
Addiction (Substance Use Disorder) Counselor
Paul Diaz, ATC
Athletic Trainer
Philipe Diaz
Community Health Worker
Phillip Diaz
Addiction (Substance Use Disorder) Counselor
Reyna Diaz, LCSW
Clinical Social Worker
Ricardo Diaz, PHARMD
Pharmacist
Rosa Diaz
Addiction (Substance Use Disorder) Counselor
Rosa Diaz, NP
Addiction Psychiatry Physician
Roxanne Diaz
Behavior Technician
Sabrina Diaz, LMFT94048
Marriage & Family Therapist
Samantha Diaz
Clinical Social Worker
Sandra Diaz
Social Worker
Shaneye Diaz
Behavior Technician
Silvia Diaz, LCSW
Clinical Social Worker
Sonia Diaz
Clinical Social Worker
Stacy Diaz
Licensed Vocational Nurse
Susana Diaz
Case Manager/Care Coordinator
Tamisha Diaz
Rehabilitation Practitioner
Tanya Diaz, PHD
Student in an Organized Health Care Education/Training Program
Jennifer Diaz Axomulco
Clinical Social Worker
Emely Diaz Jimenez
Behavior Technician
Lorena Diaz Maya
Behavior Technician

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 Angeles, CA?
There are 67,148 registered healthcare providers in Los Angeles, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Los Angeles?
The most common specialties in Los Angeles are Student in an Organized Health Care Education/Training Program, Behavior Technician, Marriage & Family Therapist, Clinical Social Worker, Case Manager/Care Coordinator. Student in an Organized Health Care Education/Training Program has the most providers with 7,609.
Related guides

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.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.