Jason A. Zell, DO

Dr. Maki Yamamoto is a board-certified UCI Health surgical oncologist. Her clinical interests include the surgical treatment of skin malignancies such as melanoma and Merkel cell carcinomas; endocrine diseases, such as thyroid cancer, parathyroid disease, adrenal tumors and soft tissue sarcomas. Yamamoto earned her medical degree at New York Medical College in Valhalla, N.Y. She completed a residency in general surgery at UCI Medical Center and fellowship in surgical oncology at the University of South Florida's Moffitt Cancer Center in Tampa, Fla. She has published numerous research papers and book chapters in her field.

Dr. Sonia R. Sehgal is a board-certified UCI Health internist who specializes in the care and treatment of older adults. Her clinical interests include healthy aging, hypertension, osteoporosis, preventive medicine and elder abuse. She earned her medical degree at St. George's University School of Medicine, Grenada. She completed an internship and residents in internal medicine at Maricopa County Medical Center in Phoenix, Ariz., followed by a fellowship in geriatric medicine at UCI Medical Center. In fall 2021, Sehgal was named one of 12 Dean's Scholars, a select group of UCI School of Medicine faculty members charged with implementing initiatives that advance the training and assessment of medical students' clinical skills and develop the next generation of medical education scholars and national leaders. She is also leading the medical school's expansion of its geriatric and gerontology program and its workforce development efforts. And as the Archstone Foundation Endowed Chair, she will support the foundation's mission: "To improve the health and well-being of older Californians and their caregivers."

We are UCI Health: A devoted team of nationally regarded physicians and nurses, researchers and clinicians, educators and students united by a single calling to improve the lives of the people in our community and beyond. As the only academic health system in Orange County, our multifaceted organization is dedicated to the discovery of new medical frontiers, to the teaching of future healers and to the delivery of the finest evidence-based care. We are unique in our ability to provide the most compassionate healthcare because were driven by our passion for innovation, grounded in the best medical and scientific knowledge.