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Endocrinology, Diabetes & Metabolism in Castro Valley, California

Data updated monthly · Last refresh September 2026

8 Endocrinology, Diabetes & Metabolism providers practice in Castro Valley. Listings are drawn from federal public records and are not endorsements.

Endocrinology, Diabetes & Metabolism providers in Castro Valley

Listed alphabetically. 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. Amer Budayr, MD
Castro Valley, CA · $103 in drug and device payments (2025) · (925) 386-6001
Dr. Farnoosh Farrokhi
Castro Valley, CA · $114 in drug and device payments (2025) · Telehealth · (510) 247-6405
Dr. Jennifer Casey
Castro Valley, CA · No drug or device payments recorded (2025) · Telehealth · (510) 204-1844
Dr. Marcia Peck, MD
Castro Valley, CA · $395 in drug and device payments (2025) · Telehealth · (510) 204-2574
Dr. Nalurporn Chokrungvaranon, M.D.
Castro Valley, CA · $228 in drug and device payments (2025) · Telehealth · (510) 204-1844
Dr. Samuel Fantaye, MD
Castro Valley, CA · $25 in drug and device payments (2025) · (510) 857-2559
Dr. Stanley Tan, MD
Castro Valley, CA · No drug or device payments recorded (2025) · Telehealth · (510) 785-5000
Dr. Susana Harbutt, M.D.
Castro Valley, CA · No drug or device payments recorded (2025) · (510) 204-1844

Conditions Endocrinology, Diabetes & Metabolism providers in Castro Valley, 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 Castro Valley, California?

There are 8 Endocrinology, Diabetes & Metabolism providers with active NPI records practicing in Castro Valley, according to federal NPPES data refreshed monthly.

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

Endocrinology, Diabetes & Metabolism providers in Castro Valley 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 records 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.

All specialties in Castro Valley Endocrinology, Diabetes & Metabolism across California

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.