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Internal Medicine in Vacaville, California

Data updated monthly · Last refresh September 2026

52 Internal Medicine providers practice in Vacaville, and 17% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Vacaville

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. Ali Hassani, MD
Vacaville, CA · $136 in drug and device payments (2025) · Telehealth · (707) 624-7500
Dr. Andleeb Judge, M.D.
Vacaville, CA · $28 in drug and device payments (2025) · Telehealth · (707) 454-5800
Dr. Angeli Duran, MD, DO
Vacaville, CA · $28 in drug and device payments (2025) · Telehealth · (707) 427-4900
Dr. Anne Chen, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 427-4900
Dr. Aurora Haworth, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 447-4362
Dr. Bethlehem Haile, M.D
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-7007
Dr. Daniel Scotti, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 455-0302
Dr. David Woodhouse, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 454-5800
Dr. Deepak Mehta, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-7007
Dr. Eri Joyo, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 624-2670
Dr. Frank Karneges, DO
Vacaville, CA · No drug or device payments recorded (2025) · (707) 454-5800
Dr. Fred Parham, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 447-3600
Dr. Garth Davis, MD
Vacaville, CA · $39 in drug and device payments (2025) · (707) 624-7500
Dr. Gurjit Kaur, MD
Vacaville, CA · $125 in drug and device payments (2025) · (707) 359-1816
Dr. Hon Chan, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 454-5800
Dr. Hydee Abaya Ghazaleh, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 624-2480
Dr. Jalal Yaganehdoust, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 448-6841
Dr. James Lee, MD
Vacaville, CA · $24 in drug and device payments (2025) · (707) 453-5000
Dr. Jason Rohrer, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 451-0182
Dr. Jonathan Abaya Ghazaleh, MD
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 624-4000
Dr. Jonathon Valeriote
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 427-4900
Dr. Julie Nguyen, MD
Vacaville, CA · $28 in drug and device payments (2025) · (707) 815-9049
Dr. Khin Win, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 451-0182
Dr. Kimberly Wiley, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Kulbir Bajwa, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-7500
Dr. Kyaw Aung, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Liyan Zhang, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Lyndsey Mcmillan, D.O.
Vacaville, CA · $59 in drug and device payments (2025) · (707) 624-4000
Dr. Manpreet Sidhu
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-1262
Dr. Mariana Lotersztain, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 724-3024
Dr. Marissa Neis-gimenez, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Mary Minguito, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Micheal Massoud, D.O.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-4000
Dr. Mohamed Falaha, MD
Vacaville, CA · No drug or device payments recorded (2025) · (650) 223-1835
Dr. Morris Li, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-4000
Dr. Narinder Saukhla, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-7007
Dr. Nicolas Aguilera, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-7007
Dr. Nikhil Mulchandani, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 651-1262
Dr. Richard Lasslo, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Richard Tan, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 451-0182
Dr. Romenna Galang, MD
Vacaville, CA · No drug or device payments recorded (2025) · Telehealth · (707) 427-4900
Dr. Shalvin Prasad, DO
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-1262
Dr. Shobhna Parmar, D.O.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 651-2440
Dr. Sreelakshmi Vasudevan
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-4000
Dr. Sukhjinder Kaur, MD
Vacaville, CA · $26 in drug and device payments (2025) · Telehealth · (707) 427-4900
Dr. Sungryong Noh, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-2709
Dr. Tesie Rallos, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 451-0182
Dr. Thomas Erskine, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-7979
Dr. Thomas Fashinell, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Usha Pai, M.D.
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-7007

Conditions Internal Medicine providers in Vacaville, 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 Vacaville, California?

There are 52 Internal Medicine providers with active NPI records practicing in Vacaville, according to federal NPPES data refreshed monthly.

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

9 of 52 (17%) 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 Vacaville treat?

Internal Medicine providers in Vacaville 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 Vacaville 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.