Scottsdale, Arizona
Nassim Haddad, MD

Nassim Haddad, MD

Dr. Haddad practices at the 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 using the radial artery approach. Dr. Haddad has vast experience in treating peripheral vascular disease, limb salvage, and amputation prevention. He established the vein clinic at the Cardiovascular Institute of Scottsdale, where he has helped many patients with varicose veins and venous insufficiency.


  • The American Board of Cardiovascular Disease
  • The American Board of Interventional Cardiology
  • The American Board of Vascular Medicine
  • The National Board of Echocardiography
  • The National Board of Nuclear Cardiology
  • The National Board of Computed Tomography
Ashish Sadhu, MD

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 at the University of Arizona in Tucson. After completing his Cardiology fellowship at Texas Tech University in Lubbock, Texas he moved to Massachusetts for further sub-specialty training in Clinical Cardiac Electrophysiology at the University of Massachusetts in Worchester.


Dr. Sadhu has specialized training in performing complex arrhythmia treatments including catheter ablations for atrial fibrillation and left atrial appendage occlusion with the Watchman LAAC as well as expertise in pacemakers, defibrillators and heart failure devices.

Joshua Waggoner, MD

Joshua Waggoner, MD

Dr. Waggoner practices at the Cardiovascular Institute of Scottsdale with 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 College of Thomas Jefferson University, Philadelphia, Pennsylvania. He completed his internal medicine residency at Harbor–UCLA Medical Center in Torrance, California. Both his Cardiology and interventional cardiology fellowships were completed at the University of Texas Health Services Center in San Antonio, Texas. He has been voted a Top Doc by Phoenix Magazine.

Originally from Spokane, Washington, Dr. Waggoner has been practicing in Arizona since 2013.


  • American Board of Internal Medicine
  • American Board of Cardiovascular Disease
  • American Board of Interventional Cardiology
  • National Board of Nuclear Cardiology