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Anesthesiology in Orange, California

Data updated monthly · Last refresh September 2026

272 Anesthesiology providers practice in Orange, and 35% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Anesthesiology 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. Timothy Dunagan
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5501
Dr. Timothy Ryan, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Timothy Walsh
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Timothy Weaver, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Tino Chen, M.D.
Orange, CA · $157 in drug and device payments (2025) · (714) 633-9111
Dr. Tony Ho, M.D.
Orange, CA · $40 in drug and device payments (2025) · (714) 633-9111
Dr. Trevor Whitwell
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Trung Nguyen, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 277-1900
Dr. Tuan Ngo, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Veronika Anufreichik
Orange, CA · No drug or device payments recorded (2025) · (714) 456-6661
Dr. Viet Scott Nguyen, DO
Orange, CA · No drug or device payments recorded (2025) · (800) 465-3032
Dr. Vishal Vazirani, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Vivek Gulati
Orange, CA · $10 in drug and device payments (2025) · (714) 456-6661
Dr. Vivian Tanaka, M.D.
Orange, CA · $277 in drug and device payments (2025) · (714) 633-9111
Dr. Wei Zhang, MD
Orange, CA · $42 in drug and device payments (2025) · (714) 744-0900
Dr. Winnie Ruo, M.D
Orange, CA · No drug or device payments recorded (2025) · (714) 744-0900
Dr. Wynnson Tom, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 633-0011
Dr. Yael Shinar
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Yamah Amiri, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Yesenia Westrup, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Yogesh Taheem, MD, MS
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Yuichi Yokoyama, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-6661

Common questions

How many Anesthesiology providers are in Orange, California?

There are 272 Anesthesiology providers with active NPI records practicing in Orange, according to federal NPPES data refreshed monthly.

How many Anesthesiology providers in Orange received drug or device company payments?

94 of 272 (35%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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 Anesthesiology 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.