HealthcareDiscovery.AI / Doctors / California / Orange / Adult Medicine

Adult Medicine in Orange, California

Data updated monthly · Last refresh September 2026

5 Adult Medicine providers practice in Orange. Listings are drawn from federal public records and are not endorsements.

Adult Medicine providers in Orange

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. Jack Mossler, MD

Orange, CA · No drug or device payments recorded (2025) · (171) 460-2626

Dr. Janja Viltuznik, M.D.

Orange, CA · $1,540 in drug and device payments (2025) · (714) 538-6822

Dr. Maryann Nuesse, D.O.

Orange, CA · No drug or device payments recorded (2025) · (714) 771-1420

Dr. Philip Madrid, MD

Orange, CA · $150 in drug and device payments (2025) · (714) 628-3340

Dr. William Nuesse, M.D.

Orange, CA · No drug or device payments recorded (2025) · (714) 771-1420

Common questions

How many Adult Medicine providers are in Orange, California?

There are 5 Adult Medicine providers with active NPI records practicing in Orange, 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 Orange Adult 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.