Our Radiologists

We have provided quality diagnostic imaging services to the referring community for over a decade. Bay Radiology San Ramon is a division of BASS Medical Group.


Ravi Alagappan, M.D.
Diagnostic Radiologist

Dr. Alagappan serves as the Medical Director for Bay Radiology San Ramon. He is fellowship trained in abdominal and pelvic MRI and has considerable experience in musculoskeletal MRI and MR angiography. Dr. Alagappan has been involved in numerous research studies investigating the role of MR in body imaging and has a special interest in gynecological MRI.

Board Certifications

Diagnostic Radiology


Fellowship: University of California San Francisco in San Francisco, California
Residency: Diagnostic Radiology Residency at University of California Davis Medical Center in Sacramento, California
Internship: Highland General Hospital in Oakland, California
Medical School: Emory University School of Medicine in Atlanta, Georgia
Undergraduate: Emory University in Atlanta, Georgia


American College of Radiology
Radiological Society of North America
American Roentgen Ray Society


Renu Liu, M.D.
Diagnostic Radiologist

Dr. Liu is a an ACGME accredited fellowship trained and board certified Radiologist joining us from the Yale School of Medicine where she was assistant professor in the Department of Radiology. Dr. Liu was a member of the neuroradiology section and has considerable experience in imaging of the neuroaxis, including imaging of the brain, spine, and head and neck.

Board Certifications 

Diagnostic Radiology


Fellowship: Neuroradiology fellowship at Weill Cornell New York Presbyterian Hospital and Memorial Sloan Kettering Cancer Center

Residency: University of California San Francisco

Medical School: Yale University School of Medicine

Green Initiative

We purchase recycled paper products and recycle all x-ray film, paper and computer products. Our state-of-the-art equipment is energy saving. We have invested in high efficiency heating and air conditioning systems. Digital transmission of images and reports eliminates physical transportation. Computers and imaging equipment are turned off or set to sleep mode when not in use. Unused computers are donated whenever possible. We utilize local cleaning and maintenance to minimize transportation. And, we preferentially support companies who have similar values.