For Appointment
Upland - (909) 579-6721
Riverside - (951) 788-3930

Our Medical Staff

Dr. Nan Wang

Nan Wang, MD

Board Certified Cardiovascular and Thoracic Surgeon

Dr. Nan Wang is the Medical Director for Cardiothoracic Surgery at San Antonio Community Hospital. Over the past 20 years, his focus has been on complex acquired heart disease surgery. His particular interests are Mitral Valve Repair, Aortic Root Replacement with Valve Sparing Aortic Root Reconstruction, Aortic Aneurysm and Dissection Repair, (TEVAR) Thoracic Endo-Vascular Aneurysm Repair and Off-Pump Coronary Artery Bypass Grafting.

Dr. Wang attended Loma Linda University Medical Center School of Medicine for Medical School. He also completed his Cardiac Surgery Residency at Loma Linda University. He completed an additional year of Fellowship at Cleveland Clinic Foundation. His training at Cleveland Clinic focused on Mitral Valve Repair, Heart Transplantion and Ventricular Assist Device Surgery.

It is Dr. Wang’s philosophy to embrace the concept of “Synergy” in providing the best care for each of his patients. Each member of the team must work together for the greater good of the patient.


Dr. Shanka Biswas

Shankha S. Biswas, MD

Board Certified Cardiovascular and Thoracic Surgeon

Dr. Shankha Biswas is a Partner with Synergy CT Surgery. He specializes in both thoracic and cardiac surgery with emphasis in minimally invasive approaches. His particular clinical interests are surgical management of complex coronary artery disease, structural heart disease and aortic disease. His area of expertise also includes VATS (video assisted thoracoscopic surgery) lobectomy in the treatment of lung cancer.

Dr. Biswas attended Medical School at Duke University School of Medicine. He completed his general and thoracic surgery residency at Duke University Medical Center.


Dr. Hossein Shayan

Hossein Shayan, MD

Board Certified Cardiovascular and Thoracic Surgeon

Dr. Hossein Shayan is a Partner with Synergy CT Surgery. He performs both cardiac and thoracic surgery. His clinical areas of interest are surgical management of heart failure, mechanical circulatory support and device therapy.

Dr. Shayan attended University of British Columbia for Medical School. He completed his surgical residency at University of Alberta and University of British Columbia. Dr. Shayan completed an additional year of fellowship at University of Pittsburgh Medical Center specializing in heart failure surgery, heart transplantation, lung transplantation and device therapy.

Dr. Shayan believes in using a collaborative and evidence based approach to medicine in order to provide patient centered care.


Dr. Rohit Trivedi

Rohit Trivedi, MD

Board Certified Cardiovascular and Thoracic Surgeon

Dr. Rohit Trivedi has practiced for over 30 years as a Cardiovascular Surgeon in the Pomona and Upland area. Besides a robust experience in the management of adult heart disease, his special interest and expertise is in the treatment of thoracic and abdominal aneurysms, in particular minimally invasive endovascular aneurysm repair (TEVAR and EVAR).

Dr. Trivedi attended Medical School at the University Hospital in Baroda, India. He completed his Surgical Residency at Englewood Hospital in New Jersey and his Cardiovascular Residency at University of Cincinnati.

Dr. Trivedi believes that the needs of the patient should always come first and to treat each patient as if he/she were a member of his family.