HealthcareDiscovery.AI / Doctors / California / Mission Viejo / Internal Medicine

Internal Medicine in Mission Viejo, California

Data updated monthly · Last refresh September 2026

59 Internal Medicine providers practice in Mission Viejo, and 64% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Mission Viejo

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. Adrienne Drake, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 951-0775
Dr. Afshin Doust, M.D.
Mission Viejo, CA · $156 in drug and device payments (2025) · (949) 282-1671
Dr. Alyssa Le, M.D
Mission Viejo, CA · $600 in drug and device payments (2025) · (949) 364-6000
Dr. Amy Underwood-jolly, M.D.
Mission Viejo, CA · $680 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Andrew Truong, MD
Mission Viejo, CA · $953 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Bahareh Khavarian, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 916-8770
Dr. Bahman Badie, M.D.
Mission Viejo, CA · $532 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Bruce Seligsohn, M.D.
Mission Viejo, CA · $145 in drug and device payments (2025) · (949) 588-8775
Dr. Chad Wadell, M.D.
Mission Viejo, CA · $786 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. David Kovacs, MD
Mission Viejo, CA · $4,524 in drug and device payments (2025) · Telehealth · (949) 364-7246
Dr. David Pino, M.D.
Mission Viejo, CA · $161 in drug and device payments (2025) · (949) 282-1065
Dr. Dennis Haghighat, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-6000
Dr. Diane Zebari, M.D.
Mission Viejo, CA · $289 in drug and device payments (2025) · (949) 364-5318
Dr. Donald Pratt, M.D.
Mission Viejo, CA · $17 in drug and device payments (2025) · (949) 364-6000
Dr. Duc Pham, MD
Mission Viejo, CA · $1,205 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Dung Trinh, MD
Mission Viejo, CA · $49,855 in drug and device payments (2025) · (949) 583-1600
Dr. Edgar Wayne, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 573-9510
Dr. Elizabeth Nieto, M.D.
Mission Viejo, CA · $151 in drug and device payments (2025) · (949) 364-6000
Dr. Eric Benner, M.D.
Mission Viejo, CA · $321 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Erik Finlayson, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 365-2444
Dr. Faramarz Kardan, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-1400
Dr. Farnoosh Yari, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 521-8215
Dr. Gary Sugarman, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 582-5430
Dr. Gerald Sugino, M.D.
Mission Viejo, CA · $235 in drug and device payments (2025) · (949) 365-2444
Dr. Gregory Joy, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 582-5430
Dr. Helen Chang, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 588-0051
Dr. Huan Guu, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-1400
Dr. Jae Choi, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-6000
Dr. James Scheppach, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-6000
Dr. Janet Yazdi, M.D.
Mission Viejo, CA · $435 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Joe Nguyen, M.D.
Mission Viejo, CA · $61 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Joshua Sugino, DO
Mission Viejo, CA · $572 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Katherine Manasson, M.D.
Mission Viejo, CA · $148 in drug and device payments (2025) · (949) 348-1085
Dr. Kelly Fordyce, M.D.
Mission Viejo, CA · $723 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Konstantinos Melahoures, M.D.
Mission Viejo, CA · $868 in drug and device payments (2025) · (949) 951-7111
Dr. Kuang Cheng Chen, DO
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 866-3600
Dr. Leslie Lu, MD
Mission Viejo, CA · $352 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Maria Savitt, MD
Mission Viejo, CA · $152 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Mark Hauptman, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 582-5430
Dr. Mehrnaz Badie, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · Telehealth · (949) 364-6000
Dr. Michael Morris, MD
Mission Viejo, CA · $120 in drug and device payments (2025) · (949) 347-6044
Dr. Michele Staunton, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · Telehealth · (949) 364-6000
Dr. Mon-ta Tsai, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 588-0051
Dr. Murray Margolis, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-6000
Dr. Nader Noorian, M.D.
Mission Viejo, CA · $8,122 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Nina Swadener, MD
Mission Viejo, CA · $889 in drug and device payments (2025) · Telehealth · (949) 364-6559
Dr. Pardise Moraghebi, M.D.
Mission Viejo, CA · $485 in drug and device payments (2025) · Telehealth · (949) 364-6000
Dr. Rajive Zachariah, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · Telehealth · (949) 364-6000
Dr. Raymond Kwa, M.D.
Mission Viejo, CA · $329 in drug and device payments (2025) · (949) 364-6000
Dr. Reza Allamehzadeh, M.D
Mission Viejo, CA · $133 in drug and device payments (2025) · Telehealth · (949) 581-2002

Conditions Internal Medicine providers in Mission Viejo, California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Mission Viejo, California?

There are 59 Internal Medicine providers with active NPI records practicing in Mission Viejo, according to federal NPPES data refreshed monthly.

How many Internal Medicine providers in Mission Viejo received drug or device company payments?

38 of 59 (64%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in Mission Viejo treat?

Internal Medicine providers in Mission Viejo commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

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 Mission Viejo Internal Medicine across California

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.