Dr. Daniel F. Klee

Kai-chun Sung is a Cardiologist in Mesa, Arizona. Dr. Sung is rated as a Distinguished provider by MediFind in the treatment of Cardiomyopathy. His top areas of expertise are Dilated Cardiomyopathy (DCM), Cardiomyopathy, Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation.

Dr. Alphonse Ambrosia is a board-certified interventional cardiologist with expertise in coronary artery disease, heart failure, hypertensive heart disease, stroke and carotid artery disease, coronary angiography and angioplasty, carotid angioplasty and stenting, renal artery angioplasty and stenting, TEE, PFO closure, TAVI procedure, and Watchman procedure. Dr. Ambrosia earned his medical degree from the College of Osteopathic Medicine of the Pacific. He completed his internship at Mesa General Hospital and his residency and post-doctoral fellowship at Good Samaritan Regional Medical Center (Phoenix, AZ). Dr. Ambrosia was awarded the AOMA Humanitarian Award in 2018, along with Top Doctor Recognitions in 2012 and 2014.My desire, as a physician with CVAM Cardiology, is that we will provide you with the best cardiac care possible.  We will deliver the most advanced coronary and cardiac interventional techniques and technology in both the hospital and office.  We will provide this in a relaxed setting that will allow you to have all your concerns addressed. Dr. Ambrosia is rated as a Distinguished provider by MediFind in the treatment of Cardiomyopathy. His top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Heart Failure, Pulmonary Edema, Pacemaker Implantation, and Transcatheter Aortic Valve Replacement (TAVR).

Dr. John R. Tretter is board certified in Cardiovascular Medicine, Internal Medicine, Echocardiography and level 2 CT Angiography. Dr. Tretter received his medical degree from Autonomous University of Guadalajara, Guadalajara, México. He completed his internal medicine residency at Harbor Hospital, Baltimore, Maryland in 1989 and completed his cardiology fellowship at the Mount Sinai Medical Center in Cleveland, Ohio. Dr. Tretter is a member of the American College of Cardiology and the American Society of Echocardiography. He practiced with the Slocum-Dickson Medical group in upstate New York for nearly 20 years.In 2009 he traded snowboarding on the slopes of upstate New York for mountain biking in the beautiful Arizona desert terrain to join Premier Cardiovascular Center (PCC). He has extensive experience in various cardiovascular diseases and provides services at our Casa Grande location and Banner Casa Grande Medical Center, where he serves as the Chief of Cardiology. Dr. Tretter is rated as a Distinguished provider by MediFind in the treatment of Cardiomyopathy. His top areas of expertise are Cardiomyopathy, Coronary Heart Disease, Atherosclerosis, and Angina.