Section: News

St. Joseph Health Medical Group Adds New Care Providers to Serve Napa County Residents


Napa, Calif., November 14, 2016 – St. Joseph Health Medical Group, formerly known to patients as Queen of the Valley Medical Associates, has welcomed four new physicians and a nurse practitioner to the medical group in recent months: Robert Dunham, MD; Michael Novak, MD; Mark Villalon, MD; Abhijit Adhye, MD; and Miriam Tapia, NP. This increases the total number of providers practicing with the group to 26. Below is a brief introduction to the newest St. Joseph Health Medical Group team members:

Robert Dunham, MD
Dr. Dunham is a surgeon who enables his patients to live life to the fullest by applying advanced minimally invasive surgical techniques to diseases that require operative care. Dr. Dunham is a member of the California Medical Association and the Napa County Medical Society as well as the American Society of Breast Surgeons (ASBS) and the Society of American Gastrointestinal and Endoscopic surgeons (SAGES).

Michael Novak, MD
Dr. Novak has dedicated his life to providing compassionate care to his community. As a family medicine physician, he cares for individuals at all stages of life, focusing on preventative health and overall well-being. Dr. Novak earned his medical degree at St. Louis University in Missouri and completed his residency at the University of California at Irvine. He is board-certified by the American Board of Family Medicine.

Mark Villalon, MD
Dr. Villalon is an interventional cardiologist who believes that the best way to achieve optimal cardiovascular health is through preventive measures like diet and exercise, as well as managing cholesterol and blood pressure. He specializes in the management of complex coronary artery disease and valvular heart disease, in addition to general cardiology, such as heart failure and atrial fibrillation. He is a member of the Alpha Omega Alpha Honor Medical Society.

Dr. Abhijit Adhye, MD, FSHM, FACP
Dr. Abhijit Adhye is a board-certified internist who has provided hospital-based care to Napa residents for years. He enjoys caring for individuals at all stages of life and is dedicated to helping his patients achieve healthy, fulfilling lives. Dr. Adhye earned his medical degree at Mahatma Gandhi Mission’s Medical College and completed residency at St. John’s Episcopal Hospital, Dr. B Nanavati Hospital, and Sir J.J. Hospital.

Miriam Tapia, NP
Miriam Tapia is a nurse practitioner with more than 27 years of experience providing primary care to patients. She cares for patients in the family and internal medicine offices at St. Joseph Health Medical Group in Napa. She enjoys collaborating with other healthcare providers to help patients reach their optimum health. Miriam is fluent in both English and Spanish. Miriam earned a Master’s of Science in Nursing from University of Phoenix and a Bachelor’s of Science in Nursing from Excelsior College.

“We are very pleased to welcome these high quality providers to our medical group,” said Susan Gonzalez, President of St. Joseph Health Medical Group in Napa County. “The expansion of our team demonstrates our commitment to the residents of Napa by ensuring that top-notch primary care, cardiology, and surgical services will continue to be available close to home. We look forward to continued growth and development in response to the needs of our community and hospital partner.”

The above care providers are all accepting new patients. To make an appointment, please visit our website at

About St Joseph Health Medical Group
St. Joseph Health Medical Group is committed to improving local access to care in Sonoma, Napa, Humboldt, and surrounding communities. Since 2008, our medical group partners have grown to more than 225 providers representing 35 specialties across the region. We are a team of like-minded providers that offer high quality, patient-centered care and a more satisfying experience for patients and families. For details, visit

Share Your Story

Are you interested in sharing
your experience with us?

Yes I am
Share Your Story