The Oncology Institute

John Chan, MD, practices internal medicine. Dr. Chan earned his medical degree from the University of Illinois College of Medicine in Chicago. He completed his internship and residency at Cedars-Sinai Medical Center in Los Angeles. Dr. Chan became a doctor because he is fascinated by how the human body works and is dedicated to helping people. He believes strongly in patient education and makes sure to take time and answer all of his patients' questions to keep them actively engaged in their healthcare decision-making. Patients describe him as very patient and a good listener. In his spare tim e, Dr. Chan enjoys basketball and spending time with his family and friends. In addition to English, Dr. Chan has a basic understanding of Cantonese.

Optum is a leading information and technology-enabled health services business dedicated to helping make the health system work better for everyone. With more than 180,000 people worldwide, Optum delivers intelligent, integrated solutions that help to modernize the health system and improve overall population health. Optum is part of UnitedHealth Group (NYSE:UNH).

Facey Medical Group is a health care team that provides medical services in a professional atmosphere, and has several facilities in the San Fernando, Santa Clarita and San Gabriel Valleys in California, including one located in San Gabriel. Founded in 1923, it provides an array of specialized services for the treatment of various ailments, including allergy and hearing defects, dermatology, nutritional health, endocrinology and general medicine for adults, children and adolescents. Its center offers services relating to gastroenterology, obstetrics and gynecology, oncology and hematology, ophthalmology and optometry. Facey Medical Group also sspecializes in otolaryngology, pediatrics, podiatry, pulmonology, rheumatology and urology.