Internal Medicine in Riverside, California
Data updated monthly · Last refresh September 2026
188 Internal Medicine providers practice in Riverside, and 34% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Riverside
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. Sarah Rasheed, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 251-7415 Dr. Sarina Doyan, MDRiverside, CA · No drug or device payments recorded (2025) · Telehealth ·
(951) 353-5497 Dr. Sejad Al-tahan, DORiverside, CA · No drug or device payments recorded (2025) ·
(951) 774-3050 Dr. Shahram Soltanzadeh, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Sharon Ing, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 781-7700 Dr. Shelly Thio, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Shenghua LangRiverside, CA · No drug or device payments recorded (2025) ·
(951) 353-2000 Dr. Shervin Daneshmand, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 353-2000 Dr. Stephen Colucci, MDRiverside, CA · $24 in drug and device payments (2025) ·
(951) 782-3622 Dr. Susan Diethelm, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Susan Yoshino, D.O.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 358-6057 Dr. Syed Naqvi, MDRiverside, CA · No drug or device payments recorded (2025) · Telehealth ·
(951) 466-6628 Dr. Tamara Lynne Aqui, DORiverside, CA · $1,668 in drug and device payments (2025) ·
(951) 788-3274 Dr. Terence Shum, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Thanh Hoang, MDRiverside, CA · $72 in drug and device payments (2025) ·
(909) 353-2000 Dr. Thomas Chen, M.D.Riverside, CA · $250 in drug and device payments (2025) ·
(951) 782-3849 Dr. Thuyvan Nguyen, D.O.Riverside, CA · No drug or device payments recorded (2025) ·
(833) 450-5967 Dr. Timothy Collins, DORiverside, CA · No drug or device payments recorded (2025) ·
(951) 788-3000 Dr. Tony Kwon, MDRiverside, CA · $59 in drug and device payments (2025) · Telehealth ·
(951) 782-3616 Dr. Tranhoai Nguyen, M.D.Riverside, CA · $49 in drug and device payments (2025) ·
(951) 353-2000 Dr. Trinh Tang, MDRiverside, CA · No drug or device payments recorded (2025) ·
(951) 248-0073 Dr. Trisha VuRiverside, CA · No drug or device payments recorded (2025) ·
(833) 574-2273 Dr. Tushar Patel, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Uju Ezeamama, MD, MSNRiverside, CA · No drug or device payments recorded (2025) ·
(951) 781-2200 Dr. Valentine Otuechere, MD., MPH.Riverside, CA · $939 in drug and device payments (2025) · Telehealth ·
(951) 343-1616 Dr. Verna Boykin, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Victor Laus, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 955-4494 Dr. Vincent Lee, M.D.Riverside, CA · $227 in drug and device payments (2025) ·
(714) 676-3880 Dr. Violeta De Jesus, M.D.Riverside, CA · No drug or device payments recorded (2025)
Dr. Viona Zhang, MDRiverside, CA · No drug or device payments recorded (2025) ·
(951) 827-7793 Dr. Virgil Nielsen, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Vyacheslav Shvartsman, MDRiverside, CA · No drug or device payments recorded (2025) ·
(909) 353-2000 Dr. Waqqas Mirza, MDRiverside, CA · No drug or device payments recorded (2025) ·
(951) 466-6628 Dr. Willie Citrin, MDRiverside, CA · No drug or device payments recorded (2025) ·
(951) 689-6200 Dr. Xin Zhang, MDRiverside, CA · $576 in drug and device payments (2025) · Telehealth ·
(951) 360-5275 Dr. Zainab Ali, M.D.Riverside, CA · $24 in drug and device payments (2025) · Telehealth ·
(951) 774-2952 Dr. Zandra Tutt, MDRiverside, CA · No drug or device payments recorded (2025) ·
(954) 937-2944 Dr. Zhengran Wang, DORiverside, CA · No drug or device payments recorded (2025) ·
(951) 827-7669 Conditions Internal Medicine providers in Riverside, 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.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Riverside, California?There are 188 Internal Medicine providers with active NPI records practicing in Riverside, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Riverside received drug or device company payments?63 of 188 (34%) 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 Riverside treat?Internal Medicine providers in Riverside 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 Riverside Internal Medicine across California