Dr. Ran S. Kim is a colon and rectal surgeon in Walnut Creek, California and is affiliated with multiple hospitals in the area, including John Muir Health-Walnut Creek Medical Center and John Muir Health-Concord Medical Center. He received his medical degree from MCP-Hahnemann College of Medicine and has been in practice for more than 20 years. Dr. Ran S. Kim has expertise in treating colonoscopy, colon removal, among other conditions - see all areas of expertise. Dr. Ran S. Kim accepts Medicare, Aetna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Ran S. Kim is highly recommended by patients.