Practice Overview

Pioneer Cardiovascular is a single-specialty medical practice dedicated to providing state-of-the-art medical care for our patients. Pioneer Cardiovascular was awarded Accreditation by the Intersocietal Commission of Nuclear Medicine Laboratories (ICANL). This honor indicated our practice provides outstanding Nuclear Cardiology support to our patients.

Doctors & Staff

  • Mehul Shah, MD, FACC
  • Rajiv Ashar, MD, FACC
  • Pauline Kupper, FNP


  • Cardiac Electrophysiology
  • Consultation for Cardiac Issues​
  • Long term follow-up for chronic cardiac problems
  • Echocardiography
  • Carotid Artery Ultrasound
  • Stress Testing
  • Nuclear Stress Testing
  • Loop Implant
  • Pacemaker Implantation
  • 24-hour Holter Monitors
  • 7, 14, 21, and 30 day Event Monitors​
  • Heart Catheterization (Angiography)
  • Percutaneous Coronary Intervention (Cardiac Stenting or Angioplasty)
  • Peripheral Vascular Angiography and Stenting
  • Carotid Artery Angiography and Intervention in the Experimental Setting
  • Pericardiocentesis
  • Cardioversion
  • Percutaneous Patent Foramen Ovale (PFO) and Atrial Septal Defect Closure
  • Inferior Vena Cava Filter Placement
  • Transesophageal Echocardiography (TEE)

Location & Contact

2149 E Baseline Rd. Suite 103
Tempe, AZ 85283

Location & Contact

4530 E. Muirwood Drive Suite 105
Phoenix, AZ 85048

Location & Contact

10450 E. Riggs Rd. Suite 103
Sun Lakes, AZ 85248