heart vascular institute

Heart & Vascular Institute Specialists

​The Heart & Vascular Institute at Adventist Health Glendale (AHGL) is proud to work with some of the best physicians in our community, with expertise, certifications and training in various disciplines of heart and vascular care.

Our physicians practice in a 4,500-square-foot state-of-the-art facility,

featuring 10 exam rooms, a nuclear camera and a treadmill/echocardiogram

room, all in one convenient location on the medical center campus.

Hours of operation:
Mon - Thurs 8:30 a.m. - 5 p.m. (12 p.m.- 1 p.m. closed for lunch)
Fri 8 a.m. - 4 p.m. (12 - 1 p.m. closed for lunch)

Meet Our Specialists


Hed Ahmadpour, MD

Interventional Cardiology

Dr. Ahmadpour is committed to developing and advancing heart treatments so patients have the best chance at surviving heart disease and other cardiac conditions. He is board-certified in interventional cardiology, cardiovascular disease and internal medicine and is a fellow of the American College of Cardiology. He is also a member of the American Heart Association and the American College of Chest Physicians.


Eli Capouya, MD

Cardiac Surgery

Dr. Capouya is a board-certified thoracic surgeon who specializes in adult cardiac and thoracic surgery. His goal is to advance the techniques of cardiothoracic surgery to help patients get back on their feet more quickly. He is a fellow of the American College of Surgeons and the American College of Cardiology and is a member of the Society of Thoracic Surgeons, Western Thoracic Surgical Association and the International Society for Heart and Lung Transplantation.


Dr. Harout Dermendjian is a board-certified Vascular & Interventional Radiologist and UCLA Assistant Clinical Professor. He received his Bachelor’s degree from the University of Southern California and continued his Trojan career, receiving his medical degree from the Keck School of Medicine of USC. Dr. Dermendjian then completed an Integrated Vascular & Interventional Radiology residency at Kaiser Permanente, Los Angeles Medical Center, where he received specialty training in aortic disease, peripheral artery disease, oncology, women’s health, men’s health, and pain management.
Dr. Dermendjian is a frequent presenter at national vascular & interventional radiology and multidisciplinary conferences.


Parhum Namdaran, MD

Interventional Cardiology • Cardiology

Dr. Parhum Namdaran is a board-certified interventional, structural and endovascular cardiologist. He specializes in comprehensive cardiac assessment and management, from primary prevention strategies to the full array of cardiac interventions. His patient care philosophy is rooted in empathy, compassion, and a deep respect for every individual's unique journey to health. Dr. Namdaran believes in actively listening to his patients, valuing their input and involving them in decisions about their care. Above all, he strives to create a supportive and trusting environment where patients feel heard, valued and empowered in their healthcare journey.


Lawrence Robert O'Connor, MD

Cardiovascular Disease

The ability to give patients a second chance at life inspires Dr. Lawrence O’Connor in his work as an interventional cardiologist every day. Whether he’s providing superb cardiac care or opening a blocked coronary artery with a minimally invasive procedure, Dr. O’Connor first uses all available tools to thoroughly understand his patients’ condition. Pinpointing the cause of their cardiac illness results in a clear diagnosis, correct treatment and patients who come back to say they’re now living their best, most authentic life.

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Armand Rostamian, MD


Dr. Armand Rostamian’s continued research and publication in cardiology means that his patients benefit from the best and most up-to-date information in the field. His particular training and experience in cardiac imaging enable him to understand his patients’ medical condition from various viewpoints and offer a comprehensive and efficient approach to treatment. In his practice, Dr. Rostamian is careful to give his patients time to speak. “We work together to discuss their options then choose the treatment plan that is best for them and their unique wishes and lifestyle,” he says.

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For more information, or to book an appointment with us, call (844) 21-HEART or (818) 863-4099.