Dr. Bret A. Witter is a cardiologist in Los Alamitos, California and is affiliated with multiple hospitals in the area, including Los Alamitos Medical Center and Lakewood Regional Medical Center. He received his medical degree from Baylor College of Medicine and has been in practice for more than 20 years. Dr. Bret A. Witter has expertise in treating coronary artery disease, heart failure, hypertension & high blood pressure, among other conditions - see all areas of expertise. Dr. Bret A. Witter accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.