Our Physicians

Our team of surgeons brings more than 100 years of experience and international reputations to bear in diagnosing and treating you. Get to know our talented heart surgeons:

Ramin E. Beygui, MD D. Craig Miller, MD
J.W. Randolph Bolton, MD, PhD R. Scott Mitchell, MD
Vincent DeFilippi, MD, FACS W. David Ogden, MD
Michael Fischbein, MD Philip Oyer, MD, PhD
Richard-Tien Ha, MD

Ramin E. Beygui, MDRamin E. Beygui, MD

Dr. Beygui received the University of California Regents’ Scholarship to attend the University of California, Irvine's School of Medicine, where he received his medical degree. He completed his general surgery, vascular surgery, and endovascular surgery training at Stanford University Medical Center and his cardiothoracic surgery training at UCLA Medical Center.

Dr. Beygui is board certified in surgery, vascular surgery, and thoracic surgery. He was a co-chair of the American Heart Association Peer Review Committee and a member of the Council on Heart Failure and Transplant Medicine of the International Society for Heart & Lung Transplantation.

Specialties: Adult cardiac surgery, Heart and lung transplantation, Combined coronary artery and valve surgery, Valvular heart surgery, Thoracic aortic surgery, Endovascular surgery, and Arrhythmia surgery.

J.W. Randolph Bolton, MD, PhD

Dr. Bolton attended medical school in his home state of South Carolina. He completed his cardiothoracic surgery and pediatric cardiac surgery training at Boston University Medical Center. Board certified in both general surgery and thoracic surgery, Dr. Bolton became one of the youngest chiefs of cardiothoracic surgery at Wilford Hall Medical Center in San Antonio, Texas. He also served as an associate professor of pediatric cardiac surgery at the University of Texas Health Science Center at San Antonio. Retired from the United States Air Force as lieutenant colonel, Dr. Bolton was the former consultant to the surgeon general of the Air Force.

Dr. Bolton is one of the pioneers of beating heart surgery, bringing a less invasive and safer operation to our patients. This method of bypass surgery benefits patients with a shorter recovery time and reduced stress on the body. With extensive publications in the field of cardiothoracic surgery, he has proctored many surgeons nationally and internationally in beating heart surgery techniques. Dr. Bolton has traveled to eastern Europe, Mexico, Central and South America to teach this amazing procedure to other cardiac surgeons.

Dr. Bolton is the director for the cardiothoracic surgery program at Saint Agnes Medical Center in Fresno, California.

Specialties: Minimally invasive cardiac and thoracic surgery, Transmyocardial laser revascularization, MAZE procedure for atrial fibrillation, and Robotically assisted cardiac surgery

Vincent DeFilippi, MD, FACSVincent DeFilippi, MD, FACS

Dr. DeFilippi is the medical director of the Stanford cardiac surgery program at Salinas Valley Memorial Hospital in Salinas, California, and a clinical associate professor in the Department of Cardiothoracic Surgery at Stanford.

He has performed more than 3,000 open heart procedures and has received numerous awards and recognitions during his career, including being selected as a Top Doc in the state by New Jersey Monthly magazine and being listed among America's Top Surgeons.

In recent years, Dr. DeFilippi has consistently attained high cardiac surgical survival rates for coronary artery bypass graft surgery, despite a highly acute population, performing many of these without the use of a heart lung machine.

Michael Fischbein, MDMichael Fischbein, MD

Dr. Fischbein earned his medical degree at Boston University Medical Center in 1995. He completed his PhD in microbiology andimmunology at the University of California, Los Angeles (UCLA) in 2001. Dr. Fischbein came to Stanford for his fellowship in 2006 and is board certified in both general surgery and thoracic surgery.

Dr. Fischbein received the Donald Morton Research Award from UCLA School of Medicine in 2003 where he also completed his residency. He is currently an assistant professor in cardiothoracic surgery at Stanford Hospital & Clinics, with a clinical focus on cardiothoracic surgery, aortic diseases, and thoracic surgery.

Richard-Tien Ha, MDRichard-Tien Ha, MD

Dr. Ha earned his medical degree from Mayo Medical School in Rochester and received his general surgery residency training at University of California, San Francisco. He completed a fellowship in cardiothoracic surgery at University of California, Los Angeles and a second fellowship in cardiothoracic transplant surgery at Stanford University.

Dr. Ha welcomes the opportunity to work closely with physicians in the community, partnering to provide high-risk cardiac surgery for patients in need. He offers care for end stage heart failure that can no longer be managed through medication. A fluent Vietnamese speaker, Dr Ha takes pride in providing culturally competent, high quality care.

Specialties: Heart transplantation, Lung transplantation, Heart-Lung transplantation, Ventricular assist devices, Advanced heart failure surgery, High risk cardiac surgery

Craig Miller, MDD. Craig Miller, MD

Dr. Miller is a graduate of the Stanford University School of Medicine, former president of the Western Thoracic Surgical Association, and former chairman of the American Heart Association's Cardiovascular Surgery Council.

He is board certified in surgery, thoracic surgery, and vascular surgery. His research has advanced treatments for mitral valve disease.

Specialties: Cardiovascular surgery, Thoracic aortic surgery, Valvular surgery, Vascular surgery, and Marfan syndrome

Scott Mitchell, MDR. Scott Mitchell, MD

Dr. Mitchell graduated from Northwestern University Medical School and is board certified in surgery, thoracic surgery, and vascular surgery.

His ground-breaking work in thoracic aortic surgery has advanced patient care.

Specialties: General cardiac surgery, Thoracic aortic surgery, Valvular surgery, and Vascular surgery

David Ogden, MDW. David Ogden, MD

Dr. Ogden earned his medical degree at the University of Texas Medical Branch. He is a board certified thoracic surgeon with particular interest in complex valve surgery and general thoracic surgery.

Dr. Ogden is chief of cardiothoracic surgery at Santa Clara Valley Medical Center in San Jose.

Specialties: Complex valve surgery, Coronary artery bypass surgery, Pulmonary and esophageal surgery, and Vascular surgery


Philip Oyer, MD, PhDPhilip Oyer, MD, PhD

Dr. Oyer received both his medical degree and a doctorate in biochemistry from the University of Chicago.

He performed the world's first successful ventricular assist device implantation as a bridge to transplantation.

Specialties: General cardiac surgery, Heart transplantation, Valvular surgery, Thoracic aortic surgery, and Ventricular assist device insertion

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