Photo Marlene Millen
Primary Care Physician
Chief Medical Information Officer, Ambulatory Care
Professor of Medicine


Marlene Millen, MD, is a board-certified internal medicine doctor. She provides primary care for adults, including preventive care and diagnosis and treatment of acute and chronic diseases.

Dr. Millen has a special interest in disease prevention and screening, as well as integrated care for patients with a chronic illness. She sees a wide variety of patients, from those with cancer or kidney disease to patients with diabetes or who are in need of a transplant. Dr. Millen treats patients with high-risk family histories to healthy patients who want to maintain or further improve their health.

Dr. Millen says of her work: “I love being a part of patients’ lives and working with them as a team to improve their health from age 18 to 101. UC San Diego Health world-class specialists that provide the best care possible — care that I would want for my family."

Her research interests include improving medical care as a system and using electronics-based methods such as telemedicine to help provide different ways to deliver care to patients. As a professor in the Department of Medicine, Dr. Millen is involved in training residents and fellows at UC San Diego School of Medicine.

Dr. Millen completed her residency training at UC San Diego School of Medicine. She earned her medical degree at University of Virginia. She is board certified in internal medicine.