Dr. Jeffrey Harrell is an interventional cardiologist who practices in Simi Valley and performs procedures at Ronald Reagan UCLA Medical Center and Adventist Health Simi Valley Hospital. He specializes in cardiovascular medicine and interventional cardiology, the catheter-based treatment of heart disease. He performs nonsurgical procedures, such as percutaneous coronary intervention (PCI), to treat people with coronary artery blockages and improve blood flow to the heart. Dr. Harrell’s clinical…