Anesthesiology in Torrance, California
Data updated monthly · Last refresh September 2026
136 Anesthesiology providers practice in Torrance, and 37% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Anesthesiology providers in Torrance
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. Patrick Donley, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Patrick Yang, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Peter Chu, D.O.Torrance, CA · $21 in drug and device payments (2025) ·
(310) 540-7676 Dr. Peter HuynhTorrance, CA · $47 in drug and device payments (2025) ·
(424) 306-8012 Dr. Peter Sawras, MDTorrance, CA · $147 in drug and device payments (2025) ·
(310) 222-2700 Dr. Philip Chuang, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 303-6700 Dr. Rajesh Shankar, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2401 Dr. Revati NafdayTorrance, CA · $47 in drug and device payments (2025) ·
(424) 306-8008 Dr. Robert Hanna, M.D.Torrance, CA · $170 in drug and device payments (2025) ·
(310) 784-2710 Dr. Roger Brown, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Ruth Ackermann, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-4555 Dr. Samantha Love Onnagan, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2345 Dr. Samantha Madrid, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-5067 Dr. Sandra Yee, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-4555 Dr. Sean Cheng, M.D.Torrance, CA · $48 in drug and device payments (2025) ·
(310) 325-9110 Dr. Sean Tretiak, M.D.Torrance, CA · $79 in drug and device payments (2025) ·
(310) 325-9110 Dr. Stanley Chang, M.D.Torrance, CA · $46 in drug and device payments (2025) ·
(310) 325-9110 Dr. Steve Ciancio, MDTorrance, CA · No drug or device payments recorded (2025) ·
(323) 286-8317 Dr. Steven Underberger, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Susan Christensen, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 540-7676 Dr. Tai-shion Lee, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-3861 Dr. Teri Diamond, MDTorrance, CA · $241 in drug and device payments (2025) · Telehealth ·
(310) 325-9110 Dr. Thomas Leverone, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-4555 Dr. Thomas Paulsen, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 371-0813 Dr. Thomas Sedgwick, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Vadim Tokhner, MDTorrance, CA · $70 in drug and device payments (2025) ·
(424) 306-8012 Dr. Victoria Zheng, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(330) 339-6226 Dr. Victor Wong, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 325-9110 Dr. Vien NguyenTorrance, CA · $26 in drug and device payments (2025) ·
(310) 325-9110 Dr. Walter Brannan, M.D.Torrance, CA · $26 in drug and device payments (2025) ·
(310) 325-9110 Dr. Wing-fai Kwan, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-3472 Dr. Woosung Kim, M.D.Torrance, CA · $83 in drug and device payments (2025) ·
(999) 999-9999 Dr. Xiaoyan Zhang, M.D.Torrance, CA · $146 in drug and device payments (2025) ·
(310) 484-5935 Dr. Zada LiuTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2345 Dr. Zahir Allarakhia, MDTorrance, CA · No drug or device payments recorded (2025) ·
(424) 306-8000 Dr. Zakir Rangwala, MDTorrance, CA · $1,300 in drug and device payments (2025) ·
(310) 704-9195 Common questions
How many Anesthesiology providers are in Torrance, California?There are 136 Anesthesiology providers with active NPI records practicing in Torrance, according to federal NPPES data refreshed monthly.
How many Anesthesiology providers in Torrance received drug or device company payments?50 of 136 (37%) 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 Torrance Anesthesiology across California
