Dr. Frederick N. Thomas is a family medicine doctor in Los Angeles, California and is affiliated with PIH Health Good Samaritan Hospital. He received his medical degree from University of California (San Francisco) School of Medicine and has been in practice for more than 20 years. Dr. Frederick N. Thomas has expertise in treating aneurysm, hypertension, diabetes, among other conditions - see all areas of expertise. Dr. Frederick N. Thomas accepts Aetna, Humana - see other insurance plans accepted.