Jacquelyn L Vanderwall, MD

Dr. Richard Han Lee, DO, is an Ohio native. He moved to California in 2011 for his medical training. I chose family medicine because I get to contribute to society in a meaningful way and establish long-lasting relationships in the process, says Dr. Lee. It is truly a humbling experience to provide help when it is most needed, and I feel blessed to do that for my patients every day. Dr. Lee believes in a holistic approach to medicine where the focus is on the whole person rather than a specific concern. He has clinical interests in preventative medicine and geriatrics.

Optum physicians are committed to meeting your health care needs. Optum believes that important health care decisions should be made between you and your physician. Our physicians value the freedom that comes with independence, so Optum encourages its physician partners to make health care decisions in collaboration with you. We believe that together, you and your Optum physician can arrive at the best decisions for your treatment and care.

Daniel Chan, MD, practices family medicine. Dr. Chan earned his medical degree from Loma Linda University School of Medicine. He completed his internship and residency at Arrowhead Regional Medical Center in Colton. Dr. Chan enjoys the personal interaction of helping his patients achieve their best possible health. In his spare time, he enjoys skiing, traveling, music and volunteering in his community. In addition to English, Dr. Chan speaks Cambodian and Spanish.