2026 data CMS NPPES NUCC Taxonomy

Doctors in La Jolla, CA

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

3,643
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
387 providers
California
State
CA

Where this city sits in the corpus

La Jolla ranks 59th among 812 California cities by CMS provider count, holding 0.4% of the state's NPIs, led by Student in an Organized Health Care Education/Training Program.

3,643
NPPES providers in city
59th
of 812 CA cities
0.4%
of California providers
21.8%
in top 3 specialties

La Jolla ranks #11 of 10 California cities for Student in an Organized Health Care Education/Training Program.

Where La Jolla ranks among California cities

Provider count vs every California city in CMS NPPES (812 cities)

3,643 Top 7% higher than 93% of 812 cities

0–200: 396 cities (49%). Below this entry. 200–400: 108 cities (13%). Below this entry. 400–600: 48 cities (6%). Below this entry. 600–800: 40 cities (5%). Below this entry. 800–1,000: 32 cities (4%). Below this entry. 1,000–1,200: 18 cities (2%). Below this entry. 1,200–1,400: 15 cities (2%). Below this entry. 1,400–1,600: 17 cities (2%). Below this entry. 2K+: 138 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 La Jolla

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 (387 providers, 10.6% of the city), followed by Internal Medicine Physician.

Source CMS NPPES · city_top_specialties As of 2026

City vs state specialty index

Specialties La Jolla 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 , La Jolla over-indexes orthopaedic surgery physician at 5.7× the state average and under-indexes marriage & family therapist at 0.40×. This reflects local practice structure, not care quality.

More common here than California average

Less common here than California average

How to read this directory & data limitations

La Jolla, California appears in the CMS National Plan and Provider Enumeration System with 3,643 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 La Jolla - 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 La Jolla 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 La Jolla is weighted toward Student in an Organized Health Care Education/Training Program (387 clinicians, followed by Internal Medicine Physician with 220 and Pharmacist with 187). 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, La Jolla reports roughly 9.3 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 Technician is the most prominent one with no provider currently listing a La Jolla practice address, a coverage gap La Jolla patients typically fill by traveling to a larger nearby hub.

For La Jolla 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 La Jolla

Healthcare Providers (Page 41)

Name
Elana Marder, MS, RD, LDN
Registered Dietitian
Tania Marek, NP
Family Nurse Practitioner
Carla Marienfeld, MD
Addiction Medicine (Psychiatry & Neurology) Physician
Vincent Marin, M.D.
Plastic Surgery Physician
Nikolas Marino, MD, MBA
Internal Medicine Physician
Mark Mariski, PHARMD
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
Nancy Markel, PH.D.
Clinical Neuropsychologist
Lisa Marks, LMFT
Marriage & Family Therapist
Buba Marong, MD
Advanced Heart Failure and Transplant Cardiology Physician
Luiza Marques De Oliveira Martins
Student in an Organized Health Care Education/Training Program
Barbara Marquez, PHD
Student in an Organized Health Care Education/Training Program
Laura Marrone, MD
Psychiatry Physician
Jillian Marrs, PA-C
Medical Physician Assistant
Christopher Marsh, M.D.
Urology Physician
Marilyn Marshall, MFT
Marriage & Family Therapist
Stuart Marshall, M.D.
Orthopaedic Surgery Physician
Noreen Marsland, PSYD, MPA, MSW
Clinical Psychologist
Kendall Martin, M.D.
Diagnostic Radiology Physician
Samuel Martinez
Oncology Pharmacist
Susana Martinez, PSYD
Mental Health Counselor
Tessa Martinez, NP
Nurse Practitioner
Annemarie Martland, NP
Nurse Practitioner
Christopher Marx, M.D.
Endocrinology, Diabetes & Metabolism Physician
Ella Maser
Registered Nurse
Ahmad Mashayekan, RPH
Pharmacist
Jessica Mashayekhan, PHARMD
Pharmacist
Lucia Masi, PA-C
Surgical Physician Assistant
Diana Maslov, MD
Internal Medicine Physician
James Mason, M.D.
Hematology & Oncology Physician
Vivie Mass
Community Health Worker
Alexandra Massey, PA-C
Physician Assistant
Natalie Masson, PHD
Clinical Psychologist
Ramona Master, MD
Internal Medicine Physician
Karla Materna, PH.D.
Psychologist
Kurt Mathews, M.D.
Anatomic Pathology & Clinical Pathology Physician
Suzanne Mathews, PH.D.
Clinical Psychologist
Asma Mathlouthi
Surgery Physician
Beth Mattera, NP
Nurse Practitioner
Amanda Matthe
Student in an Organized Health Care Education/Training Program
Taylor Mattioli, PA-C
Physician Assistant
Gregory Mattson, M. D.
Family Medicine Physician
Gayane Matusov, M.D.
Student in an Organized Health Care Education/Training Program
Wendi Maurer, PH.D.
Clinical Psychologist
Jana Mauricio-Lee
Student in an Organized Health Care Education/Training Program
Brent Mausbach, PHD
Clinical Psychologist
Christyanne Maxson, MD
Family Medicine Physician
Collin Mayemura, MD
Internal Medicine Physician
Andrew Mayer, MD
Gastroenterology Physician
Candy Mayer
Family Nurse Practitioner
Frank Mayer, M.D.
Gastroenterology 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 La Jolla, CA?
There are 3,643 registered healthcare providers in La Jolla, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in La Jolla?
The most common specialties in La Jolla are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Pharmacist, Physician Assistant, Clinical Psychologist. Student in an Organized Health Care Education/Training Program has the most providers with 387.
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 2026-08-27.