Follow Us on Facebook Follow Us on Twitter

Meet Our Physicians

array(1) {
  ["BannerImageID"]=>
  string(32) "img_header_4a5511e9c32a7.jpg.jpg"
}

Meet Our Physicians

Our physicians, the doctors of the Washington Radiologists Medical Group, are highly trained specialists in Diagnostic Radiology. In addition to being board certified by the American Board of Radiology, they all have additional advanced fellowship training in specialized areas of radiology.


Jason Cheng, M.D.
Radiologist, Medical Director, Washington Hospital Medical Staff

Jason Cheng, M.D., director of medical imaging, attended Princeton University where he graduated Magna Cum Laude with a Bachelor's degree in Mechanical and Aerospace Engineering in 1979.He then studied medicine at the Stanford University School of Medicine, receiving his M.D. in 1983. After doing an internship in Internal Medicine at Cedar Sinai Medical Center in Los Angeles, Dr. Cheng returned to Stanford where he did his residency training in Diagnostic Radiology. Dr. Cheng served as Chief Resident in Diagnostic Radiology at Stanford in 1987-88. Before joining Washington Radiologists Medical Group here in Fremont, he did an additional year of training as a fellow in Cross-sectional Imaging (CT, Ultrasound and MRI) at Stanford in 1988-89.


Douglas Gallacher, M.D.
Radiologist, Washington Hospital
Medical Staff

Dr. Gallacher attended UC Irvine for his undergraduate education, graduating with Honors in 1974. He received his medical education at the Saint Louis University School of Medicine. Dr. Gallacher did a year and a half of internal medicine residency at the Long Beach Veterans Administration Hospital before switching to a residency in Diagnostic Radiology at UC Irvine. After completing his radiology residency in 1982 he did 6 months of additional training in Neuroradiology before going on to do a fellowship in Cardiovascular and Interventional Radiology at Johns Hopkins Medical Center in 1984. Dr. Gallacher has been in practice here at Washington Hospital since that time.

Bruce Lin, M.D, Radiologist
Washington Hospital Medical Staff

Dr.Lin received his B.A in Biology and Computer Science at Goshen College in Goshen, Indiana. He studied medicine at the University of Vermont Medical School, receiving his M.D. in 1995. This was followed by a transitional medicine internship and a residency in Diagnostic Radiology at University of Chicago Hospitals in Chicago, Illinois from 1995-2000. Because of his interest in Interventional Radiology (IR), Dr. Bruce Lin, then did a fellowship in Vascular and Interventional Radiology in 2000-2001. He was Director of Interventional Radiology (IR) for Rush-Copley Medical Center in IL for several years before being recruited to CA as IR director at Salinas Valley Radiologists. Dr. Lin joined our practice in April of 2008. He is board certified in Radiology with Advanced Qualifications (CAQ) in Vascular and Interventional Radiology. Washington Radiologists Medical Group is now able to provide a comprehensive Interventional Radiology Service. This includes advanced therapies such as complex arterial and venous revascularization of occlusions/stenoses, kyphoplasty, uterine artery embolization, chemoembolization, tumor ablation and embolotherapy for hemorrhage in addition to traditional Interventional Radiology procedures such as dialysis access interventions, hepatobiliary and arterial interventions.

Mimi Lin, M.D., Radiologist
Washington Hospital Medical Staff

Dr. Lin received her undergraduate degree from UCLA in 1982. She attended the University of Hawaii School of Medicine, graduating in 1987. She did a transitional internship rotating through different specialty areas before doing her residency in Diagnostic Radiology at Kaiser Los Angeles. Before joining the group at Washington Hospital in 1993, Dr. Lin did a year long fellowship in CT, ultrasound and MRI at the UCSF San Francisco VA Hospital. After entering private practice, she has maintained her ties with UCSF by serving on the volunteer clinical teaching faculty of the San Francisco VA hospital.

Bruce Nixon, M.D., Radiologist
Washington Hospital Medical Staff

Dr. Nixon did his undergraduate studies at UC Berkeley, graduating Magna Cum Laude in 1976. He studied medicine at Penn State from 1976-80 before completing a Family Practice Internship at UCLA in 1981. Dr. Nixon did his residency in Diagnostic Radiology at Stanford University Medical Center from 1981-84 followed by a fellowship in CT, MRI and ultrasound at Stanford before entering private practice.

Sunil Upender, M.D.,Radiologist
Washington Hospital Medical Staff

Sunil Upender, M.D., graduated with honors from Wesleyan University with a major in Biology. Dr. Upinder graduated from the University of Vermont, College of Medicine in 2003 and did his radiology residency at Norwalk Hospital, a Yale University affiliated institution in Norwalk, Connecticut. He was the Chief Resident in 2008. Dr. Upender just finished a fellowship specializing in Body and Breast Imaging at Yale University Medical Center in New Haven, Connecticut.

Jacob Wouden, M.D., Radiologist
Washington Hospital Medical Staff

Jacob Wouden, M.D., graduated Summa Cum Laude from Yale University with a degree in molecular biophysics and biochemistry. He received the Hummel Award for the graduate with highest distinction within the fields of science. Dr. Wouden continued his education at Harvard Medical School. He remained at Harvard for his residency at Brigham and Women's Hospital and fellowship at Beth Israel Deaconess Medical Center. Dr. Wouden completed his fellowship specializing in body magnetic resonance imaging.