Dr. Leong graduated from Tulane University School of Medicine in 1974 and has been in practice for 44 years. He completed a residency at Clinical Center at the Nih. Dr. Leong also specializes in Surgical Oncology. He currently practices at Physician Foundation Medical Associates and is affiliated with California Pacific Medical Center California Campus, California Pacific Medical Center Pacific Campus and UCSF Medical Center at Mount Zion. Dr. Leong accepts multiple insurance plans including Aetna, Medicare and Cigna. Dr. Leong is board certified in Surgery. Dr. Leong also practices at UCSF Carol F Buck Breast Cancer Ctr in San Francisco, CA. In addition to English, Dr. Leong's practice supports these languages: Spanish, Russian and Tagalog.