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Emergency Medicine in Orange, California

Data updated monthly · Last refresh September 2026

179 Emergency Medicine providers practice in Orange, and 22% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Emergency 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. Kristi L Koenig, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Kristin Lewis, MD
Orange, CA · $16 in drug and device payments (2025) · (714) 880-7812
Dr. Kyle Dornhofer
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8116
Dr. Kyle Fierro, MD
Orange, CA · No drug or device payments recorded (2025) · (707) 478-4888
Dr. Kyle Kwok, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 889-8278
Dr. Lauren Lamparter
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Linda Soldavini, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5922
Dr. Lindsey Spiegelman, MD
Orange, CA · $188 in drug and device payments (2025) · (714) 456-5239
Dr. Luke Walls-smith, MD
Orange, CA · $87 in drug and device payments (2025) · (714) 456-5239
Dr. Lynette Sequeira, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Madelyn Huttner, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Mai Tram Riquier, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Maja Feldman
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Mark Langdorf, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Mark Lee, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-0011
Dr. Mark Slader, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Matthew Abrishamian, MD
Orange, CA · $41 in drug and device payments (2025) · (714) 771-8000
Dr. Matthew Weber, M.D.
Orange, CA · $16 in drug and device payments (2025) · (714) 456-5705
Dr. Matthew Whited, MD
Orange, CA · $32 in drug and device payments (2025) · (714) 456-5239
Dr. Maximillian Smitham, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Megan Guy, MD
Orange, CA · $334 in drug and device payments (2025) · (714) 880-7812
Dr. Megan Osborn, M.D.
Orange, CA · $258 in drug and device payments (2025) · (714) 456-5705
Dr. Melissa Rudolph, MD
Orange, CA · $152 in drug and device payments (2025) · (714) 543-8911
Dr. Michael Anderson, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Michael J Burns, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-2986
Dr. Michael Lambing, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Michael Menchine, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Michael Mirhadi, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5705
Dr. Michael Valdivia, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Michelle Lambing, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Michelle Nguyen, MD
Orange, CA · $26 in drug and device payments (2025) · (714) 456-8888
Dr. Mohammad Subeh, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8934
Dr. Nadia Zuabi, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Nikita Joshi, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Nima Moradian, D.O.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8008
Dr. Omar Amr, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5922
Dr. Pardeep Thandi, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Parth Patel, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Patrick Popa, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5705
Dr. Paul Ziesmer, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Rishi Bhargava, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Robert Katzer, M.D.
Orange, CA · No drug or device payments recorded (2025) · (510) 910-6981
Dr. Robert Rowe, M.D.
Orange, CA · $1,066 in drug and device payments (2025) · (714) 456-5239
Dr. Rod Mortazavi, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Roman Navarro, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Ronald Goubert
Orange, CA · $188 in drug and device payments (2025) · (714) 456-8116
Dr. Ronald Rivera, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 509-7664
Dr. Rory Schwan, M.D.
Orange, CA · $115 in drug and device payments (2025) · (714) 456-5239
Dr. Roy Almog
Orange, CA · $188 in drug and device payments (2025) · (714) 456-5239
Dr. Ryan Gibney, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239

Common questions

How many Emergency Medicine providers are in Orange, California?

There are 179 Emergency Medicine providers with active NPI records practicing in Orange, according to federal NPPES data refreshed monthly.

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

40 of 179 (22%) 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 Emergency Medicine 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.