Anesthesiology in Fontana, California
Data updated monthly · Last refresh September 2026
28 Anesthesiology providers practice in Fontana, and 11% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Anesthesiology providers in Fontana
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. Amgad Hanna, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(877) 608-0044 Dr. Antonius Tan, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Audrey Yen, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 302-4938 Dr. Batool Hajianpour, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Benjamin Nguyen, M.D.Fontana, CA · $114 in drug and device payments (2025) ·
(909) 302-4857 Dr. Charley Berona, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. David Niu, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 427-5000 Dr. Dennis Lindeborg, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Douglas Flores, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Grace Liu, DOFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. John Chen, D.O.Fontana, CA · $1,501 in drug and device payments (2025) ·
(909) 427-2673 Dr. Joshua Milius, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 427-7162 Dr. Kevin Lay, MDFontana, CA · No drug or device payments recorded (2025) ·
(800) 780-1277 Dr. Narendra Trivedi, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Na Yon NamFontana, CA · No drug or device payments recorded (2025) ·
(909) 302-4938 Dr. Neeraja Reddy, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Niranjan Maganti, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(833) 574-2273 Dr. Pritam Patheja, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Ricardo Diaz, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Richard Yen, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Sharon Sung, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Sheng-chieh Chang, MDFontana, CA · No drug or device payments recorded (2025) ·
(833) 574-2273 Dr. Stephanie Valenzuela, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 302-4938 Dr. Steven D'sa, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 302-4938 Dr. Thelma Korpman, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Thien Doan, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Wynda Chung, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Common questions
How many Anesthesiology providers are in Fontana, California?There are 28 Anesthesiology providers with active NPI records practicing in Fontana, according to federal NPPES data refreshed monthly.
How many Anesthesiology providers in Fontana received drug or device company payments?3 of 28 (11%) 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 Fontana Anesthesiology across California
