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Allergy & Immunology (Internal Medicine) in San Francisco, California

Data updated monthly · Last refresh September 2026

12 Allergy & Immunology (Internal Medicine) providers practice in San Francisco. Listings are drawn from federal public records and are not endorsements.

Allergy & Immunology (Internal Medicine) providers in San Francisco

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. Anna Lang
San Francisco, CA · $31 in drug and device payments (2025) · Telehealth · (415) 353-2961
Dr. Iris Otani, M.D.
San Francisco, CA · $8,550 in drug and device payments (2025) · Telehealth · (415) 353-2961
Dr. Kavitha Thiagarajan
San Francisco, CA · $666 in drug and device payments (2025) · Telehealth · (415) 476-3266
Dr. Lulu Tsao
San Francisco, CA · $68 in drug and device payments (2025) · Telehealth · (415) 353-2725
Dr. Lynn Spitler, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-5660
Dr. Michael Main, MD
San Francisco, CA · $674 in drug and device payments (2025) · Telehealth · (702) 882-5285
Dr. Michele Pham, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2725
Dr. Roger Wang, D.O.
San Francisco, CA · $2,032 in drug and device payments (2025) · Telehealth · (415) 677-0901
Dr. Rose Monahan
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2725
Dr. Sowmya Arja, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 362-2614
Dr. Von Nguyen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Warner Greene, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 734-4805

Common questions

How many Allergy & Immunology (Internal Medicine) providers are in San Francisco, California?

There are 12 Allergy & Immunology (Internal Medicine) providers with active NPI records practicing in San Francisco, according to federal NPPES data refreshed monthly.

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 San Francisco Allergy & Immunology (Internal Medicine) across California

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.