Dr. Ronald D. Gim is a cardiologist in Laguna Hills, California and is affiliated with multiple hospitals in the area, including MemorialCare Saddleback Medical Center and Providence Mission Hospital-Mission Viejo and Laguna Beach. He received his medical degree from University of California San Diego School of Medicine and has been in practice for more than 20 years. Dr. Ronald D. Gim has expertise in treating cardiomyopathy, coronary artery disease, hypertension & high blood pressure, among other conditions - see all areas of expertise. Dr. Ronald D. Gim accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.