Dr. Alejandra Casillas is an internist in Los Angeles, California and is affiliated with UCLA Medical Center. She received her medical degree from Harvard Medical School and has been in practice for more than 20 years. Dr. Alejandra Casillas has expertise in treating hypertension, obesity, diabetes, among other conditions - see all areas of expertise. Dr. Alejandra Casillas accepts Medicare, Aetna, Blue Cross, United Healthcare - see other insurance plans accepted.