HealthcareDiscovery.AI / Doctors / California / Endocrinology, Diabetes & Metabolism

Endocrinologists in California

Data updated monthly · Last refresh October 2026

1,135 Endocrinology, Diabetes & Metabolism providers practice in California, including 586 (52%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

1,135providers
586telehealth
Los Angelestop city

Endocrinology, Diabetes & Metabolism by city in California

Choose a city to see providers there.

Endocrinology, Diabetes & Metabolism in Los Angeles107 providers
Endocrinology, Diabetes & Metabolism in San Francisco78 providers
Endocrinology, Diabetes & Metabolism in San Diego66 providers
Endocrinology, Diabetes & Metabolism in Sacramento41 providers
Endocrinology, Diabetes & Metabolism in Torrance34 providers
Endocrinology, Diabetes & Metabolism in Stanford31 providers
Endocrinology, Diabetes & Metabolism in Santa Monica22 providers
Endocrinology, Diabetes & Metabolism in Long Beach20 providers
Endocrinology, Diabetes & Metabolism in La Jolla20 providers
Endocrinology, Diabetes & Metabolism in Fresno20 providers
Endocrinology, Diabetes & Metabolism in Beverly Hills17 providers
Endocrinology, Diabetes & Metabolism in Newport Beach16 providers
Endocrinology, Diabetes & Metabolism in San Jose16 providers
Endocrinology, Diabetes & Metabolism in Mountain View15 providers
Endocrinology, Diabetes & Metabolism in Palo Alto15 providers
Endocrinology, Diabetes & Metabolism in Bakersfield13 providers
Endocrinology, Diabetes & Metabolism in Orange13 providers
Endocrinology, Diabetes & Metabolism in Roseville12 providers
Endocrinology, Diabetes & Metabolism in Walnut Creek12 providers
Endocrinology, Diabetes & Metabolism in Fullerton12 providers
Endocrinology, Diabetes & Metabolism in Santa Barbara12 providers
Endocrinology, Diabetes & Metabolism in Mission Viejo11 providers
Endocrinology, Diabetes & Metabolism in Duarte11 providers
Endocrinology, Diabetes & Metabolism in Irvine11 providers

Endocrinology, Diabetes & Metabolism providers in California

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Olga Calof, M.D.
San Pedro, CA · $1,613 in drug and device payments (2025) · Telehealth · (310) 831-9482
Dr. Zeljko Zic, M.D.
San Pedro, CA · No drug or device payments recorded (2025) · (310) 548-0201
Dr. Kevin Kobalter, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Ammar Qoubaitary, M.D.
San Ramon, CA · $93,147 in drug and device payments (2025) · Telehealth · (925) 866-8700
Dr. Luisa Duran
San Ramon, CA · $508 in drug and device payments (2025) · Telehealth · (925) 866-8700
Dr. Mahmood Kazemi, M.D.
San Ramon, CA · $19 in drug and device payments (2025) · (925) 866-8700
Dr. Maruja Diaz Arjonilla, MD
Santa Ana, CA · $220 in drug and device payments (2025) · Telehealth · (714) 288-3230
Dr. Alex Depaoli, M.D.
Santa Barbara, CA · $58 in drug and device payments (2025) · (805) 447-3423
Dr. Ashley Thorsell, M.D.
Santa Barbara, CA · $3,374 in drug and device payments (2025) · Telehealth · (805) 681-7820
Dr. Charles Donner, M.D.
Santa Barbara, CA · No drug or device payments recorded (2025) · (805) 681-1761
Dr. Daniel Berger, MD
Santa Barbara, CA · $63,475 in drug and device payments (2025) · Telehealth · (805) 681-1761
Dr. Jennifer Hone, MD
Santa Barbara, CA · $37 in drug and device payments (2025) · (303) 921-6740
Dr. Karen Hougo, M.D.
Santa Barbara, CA · No drug or device payments recorded (2025) · (805) 964-5552
Dr. Kateryna Markova, M.D.
Santa Barbara, CA · $642 in drug and device payments (2025) · Telehealth · (805) 681-7820
Dr. Mark Wilson, M.D.
Santa Barbara, CA · $236 in drug and device payments (2025) · (805) 681-1761
Dr. Muhammad Haq, M.D.
Santa Barbara, CA · $274 in drug and device payments (2025) · Telehealth · (805) 681-1761
Dr. Sonal Phatak, M.D.
Santa Barbara, CA · No drug or device payments recorded (2025) · Telehealth · (805) 564-3233
Dr. Sylvia Rivera, M.D.
Santa Barbara, CA · $201 in drug and device payments (2025) · (805) 323-9750
Dr. Tricia Westhoff-pankratz, M.D.
Santa Barbara, CA · $2,701 in drug and device payments (2025) · Telehealth · (805) 681-7820
Dr. Mehrnaz Ghasemiesfe, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 851-1000
Dr. Aaron Pardini, M.D.
Santa Cruz, CA · $33 in drug and device payments (2025) · Telehealth · (831) 475-8834
Dr. Bahar Aghighi, MD
Santa Cruz, CA · $246 in drug and device payments (2025) · Telehealth · (831) 459-6603
Dr. David Karpf, M.D.
Santa Cruz, CA · No drug or device payments recorded (2025) · Telehealth · (650) 721-1300
Dr. Jeffrey Williams, M.D., PHD
Santa Cruz, CA · $1,007 in drug and device payments (2025) · (831) 465-7778
Dr. Larry Levin
Santa Cruz, CA · No drug or device payments recorded (2025) · (831) 458-5597
Dr. Pritisheel Banga, DO
Santa Cruz, CA · No drug or device payments recorded (2025) · (831) 475-8834
Dr. Ahl Jeffrey Caseja, MD
Santa Fe Springs, CA · $2,257 in drug and device payments (2025) · Telehealth · (562) 967-2760
Dr. Margaret England, MD
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 349-8972
Dr. Michael Lai, MD
Santa Maria, CA · $3,731 in drug and device payments (2025) · Telehealth · (805) 349-8972
Dr. Arita Thatte, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-1050
Dr. Evan Abel, MD
Santa Monica, CA · $13,357 in drug and device payments (2025) · (310) 899-7633
Dr. Gerald Levine, M.D.
Santa Monica, CA · $788 in drug and device payments (2025) · (310) 453-0559
Dr. Henry Zelada Castro, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 899-7633
Dr. Hugo Torres, M.D.
Santa Monica, CA · $381 in drug and device payments (2025) · (310) 828-1050
Dr. Ian Downs, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 828-1050
Dr. Janet Winikoff, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-3209
Dr. Julie Bernthal, MD
Santa Monica, CA · $159 in drug and device payments (2025) · Telehealth · (310) 319-1234
Dr. Katayoun Khoshbin, MD
Santa Monica, CA · $249 in drug and device payments (2025) · (310) 828-1050
Dr. Katherine Araque Triana, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-8751
Dr. Leonard Lipman, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 396-4745
Dr. Linda Glaser, M.D., PH.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-2878
Dr. Melissa Lechner, MD, PHD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 825-7922
Dr. Noa Tal, MD
Santa Monica, CA · $8,549 in drug and device payments (2025) · Telehealth · (310) 582-7450
Dr. Philip Barnett, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-5641
Dr. Preethi Srikanthan, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 828-7172
Dr. Rachael Oxman, MD, MPH
Santa Monica, CA · $99 in drug and device payments (2025) · Telehealth · (310) 828-1050
Dr. Richard Guttler, MD FACE
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 393-8860
Dr. Rose Lin, M.D.
Santa Monica, CA · $3,033 in drug and device payments (2025) · Telehealth · (310) 829-8584
Dr. Sarah Kim, M.D.
Santa Monica, CA · $19 in drug and device payments (2025) · Telehealth · (310) 828-1050
Dr. Sarah Rettinger, MD
Santa Monica, CA · $160 in drug and device payments (2025) · Telehealth · (310) 829-8584

Conditions Endocrinology, Diabetes & Metabolism providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Endocrinology, Diabetes & Metabolism providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Endocrinology, Diabetes & Metabolism providers are in California?

There are 1,135 Endocrinology, Diabetes & Metabolism providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Endocrinology, Diabetes & Metabolism providers in California offer telehealth?

Yes. 586 of the 1,135 Endocrinology, Diabetes & Metabolism providers in California (about 52%) report offering telehealth services in CMS data.

Which cities in California have the most Endocrinology, Diabetes & Metabolism providers?

Los Angeles (107), San Francisco (78), San Diego (66) have the highest concentration of Endocrinology, Diabetes & Metabolism providers in California.

How many Endocrinology, Diabetes & Metabolism providers in California received drug or device company payments?

615 of 1,135 Endocrinology, Diabetes & Metabolism providers in California (54%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Endocrinology, Diabetes & Metabolism providers in California treat?

Endocrinology, Diabetes & Metabolism providers commonly treat type 2 diabetes, thyroid disorders, osteoporosis, hormone imbalance, type 1 diabetes and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Endocrinologists in California work in independent practices or large health systems?

Among 765 Endocrinologists in California enrolled in Medicare, 18% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 74% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Endocrinologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Endocrinologists hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Stanford Health Care in Stanford; Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica.

Related reading on HealthcareDiscovery.AI

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Endocrinology, Diabetes & Metabolism in California? Get featured.