Internal Medicine in Hayward, California
Data updated monthly · Last refresh September 2026
40 Internal Medicine providers practice in Hayward, and 18% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Hayward
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. Abubakr Asadulla, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Adam Regelmann, MD, PHDHayward, CA · No drug or device payments recorded (2025) ·
(855) 782-7899 Dr. Aida Li, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Allen Chiu, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Anu Pokharel, MDHayward, CA · $290 in drug and device payments (2025) ·
(510) 398-7474 Dr. David Anderson, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Diane Sun, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 454-1000 Dr. Emily Fisher, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 266-1700 Dr. Eric Kohleriter, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 785-5000 Dr. Generoso Porciuncula, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 887-6956 Dr. Gerald Frank, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Gerald Myint, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 670-1111 Dr. Glenda Lovell, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 471-5880 Dr. Houman Sharifi, M.DHayward, CA · $287 in drug and device payments (2025) · Telehealth ·
(510) 785-5000 Dr. Ivan Lee, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 783-6444 Dr. Jean-paul Motamedi, DOHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Jennifer Klein, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 454-1000 Dr. John Bell, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 780-4345 Dr. Jonas Masikat, M.DHayward, CA · No drug or device payments recorded (2025) ·
(510) 780-4345 Dr. Kaarel Kaljot, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 785-5000 Dr. Maina Shetty, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 782-7111 Dr. Mark Khoo, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 885-3735 Dr. Michael Marchiano, MDHayward, CA · $371 in drug and device payments (2025) · Telehealth ·
(510) 670-1111 Dr. Min-shong Chang, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 782-1972 Dr. Mohit JoshipuraHayward, CA · No drug or device payments recorded (2025) ·
(833) 860-1057 Dr. Neil Handelman, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Queelan Ratnesar, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 783-6444 Dr. Robert Lake, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 266-1700 Dr. Ronald Banks, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 538-9909 Dr. Soma Mandal, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Srilekha Puranam, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 266-1741 Dr. Steven Verbinski, M.D. Dr. Sylusha Gadipudi, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 670-1111 Dr. Thomas Fung, M.D.Hayward, CA · No drug or device payments recorded (2025) ·
(510) 886-6111 Dr. Tong-hau Wu, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Victor Chu, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Dr. Xiaochuan Chen, M.D.Hayward, CA · $137 in drug and device payments (2025) · Telehealth ·
(510) 403-1699 Dr. Yogesh Bhakta, MDHayward, CA · No drug or device payments recorded (2025) ·
(510) 784-4000 Conditions Internal Medicine providers in Hayward, 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 Hayward, California?There are 40 Internal Medicine providers with active NPI records practicing in Hayward, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Hayward received drug or device company payments?7 of 40 (18%) 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 Hayward treat?Internal Medicine providers in Hayward 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 Hayward Internal Medicine across California