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 Angeles | 107 providers |
| Endocrinology, Diabetes & Metabolism in San Francisco | 78 providers |
| Endocrinology, Diabetes & Metabolism in San Diego | 66 providers |
| Endocrinology, Diabetes & Metabolism in Sacramento | 41 providers |
| Endocrinology, Diabetes & Metabolism in Torrance | 34 providers |
| Endocrinology, Diabetes & Metabolism in Stanford | 31 providers |
| Endocrinology, Diabetes & Metabolism in Santa Monica | 22 providers |
| Endocrinology, Diabetes & Metabolism in Long Beach | 20 providers |
| Endocrinology, Diabetes & Metabolism in La Jolla | 20 providers |
| Endocrinology, Diabetes & Metabolism in Fresno | 20 providers |
| Endocrinology, Diabetes & Metabolism in Beverly Hills | 17 providers |
| Endocrinology, Diabetes & Metabolism in Newport Beach | 16 providers |
| Endocrinology, Diabetes & Metabolism in San Jose | 16 providers |
| Endocrinology, Diabetes & Metabolism in Mountain View | 15 providers |
| Endocrinology, Diabetes & Metabolism in Palo Alto | 15 providers |
| Endocrinology, Diabetes & Metabolism in Bakersfield | 13 providers |
| Endocrinology, Diabetes & Metabolism in Orange | 13 providers |
| Endocrinology, Diabetes & Metabolism in Roseville | 12 providers |
| Endocrinology, Diabetes & Metabolism in Walnut Creek | 12 providers |
| Endocrinology, Diabetes & Metabolism in Fullerton | 12 providers |
| Endocrinology, Diabetes & Metabolism in Santa Barbara | 12 providers |
| Endocrinology, Diabetes & Metabolism in Mission Viejo | 11 providers |
| Endocrinology, Diabetes & Metabolism in Duarte | 11 providers |
| Endocrinology, Diabetes & Metabolism in Irvine | 11 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. Wen-yee Tsai, MDOakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 465-7600 Dr. Christopher Hupfeld, M.D.Oceanside, CA · No drug or device payments recorded (2025) · Telehealth ·
(760) 967-9569 Dr. Margot Aiken, MDOceanside, CA · No drug or device payments recorded (2025) ·
(760) 941-9850 Dr. Aaron Rockoff, MDOrange, CA · $2,573 in drug and device payments (2025) · Telehealth ·
(714) 771-5700 Dr. Aditi Thakkar, MBBSOrange, CA · $366 in drug and device payments (2025) · Telehealth ·
(714) 456-7720 Dr. Andrew Reikes, MDOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-8978 Dr. Bogi Andersen, MDOrange, CA · $71 in drug and device payments (2025) · Telehealth ·
(714) 456-8978 Dr. Ismail Kasimoglu, MD, PHD, MBAOrange, CA · $46 in drug and device payments (2025) · Telehealth ·
(714) 456-7720 Dr. Ivy-joan Madu, M.D.Orange, CA · $6,311 in drug and device payments (2025) ·
(714) 639-1815 Dr. Jenny Dai-ju, M.D.Orange, CA · $125 in drug and device payments (2025) · Telehealth ·
(714) 880-7812 Dr. Joseph Hsiao, MDOrange, CA · $355 in drug and device payments (2025) · Telehealth ·
(714) 628-3230 Dr. Llanyee Liwanpo, M.D.Orange, CA · $362 in drug and device payments (2025) · Telehealth ·
(714) 628-3330 Dr. Megan Mcconnell, MDOrange, CA · $19 in drug and device payments (2025) · Telehealth ·
(714) 456-8888 Dr. Soon Kwon, MDOrange, CA · $37 in drug and device payments (2025) · Telehealth ·
(714) 456-8888 Dr. Yung-in Choi, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8978 Dr. Rachelle Halpern, MDOrinda, CA · No drug or device payments recorded (2025) ·
(925) 253-4425 Dr. Randall Ammon, M.D.Orinda, CA · No drug or device payments recorded (2025) ·
(925) 254-3805 Dr. Todd Lorenz, MDOrinda, CA · No drug or device payments recorded (2025) ·
(925) 998-8205 Dr. Yewande Adepoju, DOOroville, CA · $244 in drug and device payments (2025) · Telehealth ·
(530) 990-7430 Dr. Michelle LevinOxnard, CA · $1,700 in drug and device payments (2025) · Telehealth ·
(805) 667-3909 Dr. Hugh Nasr, MDPalm Springs, CA · No drug or device payments recorded (2025) ·
(760) 320-6027 Dr. Sujatha Srikanth, M.D.Palm Springs, CA · No drug or device payments recorded (2025) ·
(607) 424-8224 Dr. Zeina AliPalm Springs, CA · $70 in drug and device payments (2025) ·
(760) 320-8814 Dr. Anne Porzig, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 321-4121 Dr. Carol Clewans, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2976 Dr. Carol Thomas, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 326-8700 Dr. Chrysoula Dosiou, MDPalo Alto, CA · $13,252 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Daniele Rottkamp, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2981 Dr. Dimpi Nitin Desai, MDPalo Alto, CA · $236 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Elisabeth Ryzen, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Elizabeth Fraze, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-1353 Dr. Grace Chan, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2976 Dr. Kaniksha Desai, MDPalo Alto, CA · $281 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Nandini Joseph, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 799-8048 Dr. Norra Kwong, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2976 Dr. Randolph LindePalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Shilpa Jain, M.D.Palo Alto, CA · $85 in drug and device payments (2025) · Telehealth ·
(650) 493-5000 Dr. Swaytha Yalamanchi, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2976 Dr. Alan Jacknow, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 Dr. Nora Bedrossian, MDPanorama City, CA · $796 in drug and device payments (2025) · Telehealth ·
(310) 553-5203 Dr. Shireen Fatemi, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 Dr. Albert Shieh, M.D.Pasadena, CA · $19 in drug and device payments (2025) · Telehealth ·
(626) 397-8323 Dr. Cary Manoogian, MDPasadena, CA · No drug or device payments recorded (2025) ·
(626) 792-3141 Dr. Dorothea Spambalg, M.D.Pasadena, CA · $437 in drug and device payments (2025) ·
(626) 577-0505 Dr. Frederick Lee, MDPasadena, CA · $840 in drug and device payments (2025) ·
(626) 797-7470 Dr. Gia Novell-kimura, MDPasadena, CA · No drug or device payments recorded (2025) ·
(626) 795-7556 Dr. Jennifer Chang, M.D.Pasadena, CA · $1,177 in drug and device payments (2025) · Telehealth ·
(626) 397-8323 Dr. Mahtab Sohrevardi, MDPasadena, CA · $1,362 in drug and device payments (2025) · Telehealth ·
(626) 397-8323 Dr. Maria Linares Valderrama, M.D.Pasadena, CA · $529 in drug and device payments (2025) · Telehealth ·
(626) 585-4121 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.
- Type 2 diabetes
- Thyroid disorders
- Osteoporosis
- Hormone imbalance
- Type 1 diabetes
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.
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