HealthcareDiscovery.AI / Doctors / California / Walnut Creek / Emergency Medicine

Emergency Medicine in Walnut Creek, California

Data updated monthly · Last refresh September 2026

97 Emergency Medicine providers practice in Walnut Creek, and 9% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Emergency Medicine providers in Walnut Creek

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. Joy Li, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4070
Dr. Julia Yip, DO
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Karl Nimtz
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Kathryn Henry
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Lauren Cooke, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 375-9886
Dr. Lauren Klingman, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 813-6880
Dr. Lisa Low, DO
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Louis Verre, DO
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Maisie Mok, D.O.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Malcolm Johnson, MD
Walnut Creek, CA · $117 in drug and device payments (2025) · (925) 939-3000
Dr. Margaret Mahaffa
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Marianna Oppenheimer, MD, MSC
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Mark Provda, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Mark Slomoff, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 939-3000
Dr. Mary Fox, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Meredith Waldon, MBBS
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 519-3945
Dr. Michael Katz, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Michael Lozano, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Michael Lucas, DO
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Michael Overfield, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Michael Torrest, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Nirav Shah, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Patrick Shipsey, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Paul Freitas, M.D.
Walnut Creek, CA · $77 in drug and device payments (2025) · (925) 939-3000
Dr. Peter Ackerman, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · Telehealth · (925) 295-4000
Dr. Peter Barnett, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Peter Benson, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 895-2519
Dr. Robert Koshlap, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Robert Mittendorff, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (650) 704-1639
Dr. Robert Mooney, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Robert Weingarten, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Samantha Chin, M.D
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 272-8624
Dr. Sandra Saunders, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Sara Larkin, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (734) 904-0942
Dr. Scott Chamberlain, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Scott Guyon, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Sean Bouvet, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-6723
Dr. Stephanie Carlson, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Steven Hui, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Susan Fitzgerald, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Theodore Kloth, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 939-3000
Dr. Theophile Koury, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 939-3000
Dr. Timothy Drazek, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 939-3000
Dr. Wendy Palacios, WENDY PALACIOS
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000
Dr. Wilfred Rico, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (310) 722-4480
Dr. William Mills, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 939-3000
Dr. Yalina Disla, MD, MPH
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 295-4000

Common questions

How many Emergency Medicine providers are in Walnut Creek, California?

There are 97 Emergency Medicine providers with active NPI records practicing in Walnut Creek, according to federal NPPES data refreshed monthly.

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

9 of 97 (9%) 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 Walnut Creek 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.