Rebecca Chester, MD

Dr. Chester joined Cardiovascular Institute in 2020 with expertise in Interventional cardiology, consultative cardiology and women’s cardiovascular health. Dr. Chester graduated from Tulane University School of Medicine in 2013 with honors and was inducted into the Alpha Omega Alpha Society. She completed her Internal Medicine Residency at UCLA, and Cardiovascular Diseases Fellowship at Mayo Clinic… Read more »

Ashish Sadhu, MD

Dr. Ashish Sadhu has been practicing clinical cardiac electrophysiology in Arizona since 2008 and is board certified in Cardiovascular Disease and Clinical Cardiac Electrophysiology. He earned his medical degree from Dr. P.D.M. Medical College in Amravati, India. He completed his Internal medicine internship and residency from the University of Arizona in Tucson. After completing his… Read more »

Danielle Stearns, DO

Dr. Stearns practices at Cardiovascular Institute of Scottsdale. She is board-certified in cardiovascular medicine, echocardiography and nuclear cardiology. Dr. Stearns completed both her internal medicine residency and cardiology fellowship at St. John Providence Medical Center in Michigan. She began practicing in Scottsdale in 2013 and joined Cardiovascular Institute of Scottsdale in June of 2018.  She has special interests in Pregnancy and Heart… Read more »

Joshua Waggoner, MD

Dr. Waggoner practices at Cardiovascular Institute of Scottsdale with an expertise in interventional cardiology, peripheral vascular disease and intervention, amputation prevention, structural heart disease and consultative cardiology.  Dr. Waggoner performs many complex interventional procedures including Transcatheter Aortic Valve Replacement (TAVR) and Endovascular Aortic Aneurysm Repair (EVAR). Dr. Waggoner earned his medical degree at Jefferson Medical… Read more »

Michael Maher, MD

Dr. Maher received his undergraduate degree elected to Phi Beta Kappa academic honors society from the University of Oklahoma in 1981. He completed his medical training in 1985 as a member of Alpha Omega Alpha medical honors society. He spent three years in residency training in Internal Medicine at Mount Sinai Hospital Medical Center in… Read more »

Karen Stark, MD

Dr. Stark has been a cardiologist in Scottsdale since 1997 and she is currently practicing at Cardiovascular Institute of Scottsdale. She previously practiced in Washington, D.C. With board certification in both cardiology and nuclear cardiology, she has special interest in women’s heart disease and has previously served as the Director of the Women & Heart… Read more »

Bernard Villegas, MD

Dr. Villegas has been practicing cardiology in Scottsdale since 1999. He is board certified in internal medicine, cardiology and nuclear cardiology. He is currently practicing at Cardiovascular Institute of Scottsdale where he practices invasive and non-invasive cardiology. Dr. Villegas is a graduate of the University of Texas Health Science Center in Dallas. He completed his… Read more »

David L. Rashduni, MD

Dr. Rashduni practices at Cardiovascular Institute of Scottsdale. He started his Scottsdale private practice in 2006. He has served as medical director of non-invasive cardiology at Scottsdale Healthcare Shea Medical Center and Scottsdale Healthcare Thompson Peak, and has been active in the HonorHealth Speaker’s Bureau. Dr. Rashduni earned his medical degree from Robert Wood Johnson… Read more »

Nassim Haddad, MD

Dr. Haddad practices at Cardiovascular Institute of Scottsdale. He is board-certified in multiple specialties, with a focus on interventional cardiology and vascular medicine. Dr. Haddad completed both his cardiovascular medicine and interventional cardiology fellowship at St. John Providence Medical Center in Michigan. He began practicing in Scottsdale in 2010 and pioneered cardiac angioplasty and stenting… Read more »