Phone: (602) 307-0070

Fax: (602) 307-0080

Our physicians provide the highest level of cardiovascular care to patients through their expertise in the latest treatments and their track record of over 25 years of proven experience.

Our physicians provide the highest level of cardiovascular care to patients through their expertise in the latest treatments and their track record of over 25 years of proven experience.

Our physicians provide the highest level of cardiovascular care to patients through their expertise in the latest treatments and their track record of over 25 years of proven experience.

Our physicians provide the highest level of cardiovascular care to patients through their expertise in the latest treatments and their track record of over 25 years of proven experience.

Meet Our Board Certified Physicians


Nathan Laufer, MD

Dr. Laufer is the founder & medical director of the Heart & Vascular Center of Arizona. He is board certified in internal medicine, cardiology, and interventional cardiology and has been in practice since 1984.


Adam Brodsky, MD

Dr. Brodsky earned his medical degree at Northwestern University, Feinberg School of Medicine, Chicago, Illinois.


Parminder P. Singh, MD

Dr. Singh is board certified in Interventional Cardiology, Cardiovascular Diseases, Internal Medicine and Geriatrics.


Alan Grossman, MD

Alan M. Grossman, M.D. received his medical degree from UMDNJ-Robert Wood Johnson Medical School where he was elected to the Alpha Omega Alpha Honor Medical Society.


Ashish Sadhu, MD

Dr. Ashish Sadhu is the Director of Electrophysiology at Heart and Vascular Center of Arizona.


Jason Klein, MD

Dr. Jason Klein is the Medical Director of the Vascular Lab at Heart and Vascular Center of Arizona. He is board certified by the American Board of Internal Medicine in Cardiovascular Disease and Internal Medicine.


Rebecca Allison, MD

Rebecca Allison, M.D. received her medical degree Magna Cum Laude from The University of Mississippi Medical School. She completed her internal medicine internship at Parkland Memorial Hospital, Dallas, Texas. Her residency in medicine was completed at The University of Mississippi. Dr. Allison practiced small town primary care before deciding on pursuing her cardiology training. Her […]


Joshua Waggoner, MD

Joshua Waggoner, MD Expertise Interventional Cardiology, Consultative Cardiology, Peripheral Angiography and Intervention. 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. He completed his cardiology and interventional cardiology fellowships at the University of Texas Health […]

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Intersocietal Lab Accreditation Cardiology Practice Recognition Pilot Health Services Nuclear Accreditation Cardiology Improvement Recognition

Practice News


Using Pinnacle to Demonstrate Excellence

July 23, 2014

Barbara Watkins, administrator at the Heart & Vascular Center (HVCA) of Arizona recently shared her experience using the PINNACLE Registry to demonstrate her practice’s commitment to quality on the ACC in Touch Blog. This spring, the practice was recognized by Health Services Advisory Group, Inc. with a “2014 Gold Arizona Quality Improvement Recognition Award.” Watkins […]

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Reveal LINQ Insertable Cardiac Monitor

March 21, 2014

Dr. Jason Klein is the first cardiologist to implant the revolutionary LINQ, Insertable Cardiac Monitor, in the Phoenix area. To read more about this device, see below.         Reveal LINQ™ Insertable Cardiac Monitor The revolutionary Reveal LINQ™ Insertable Cardiac Monitoring system is designed to help your doctor quickly diagnose and treat irregular […]

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Some of Our Cardiovascular Services

Venefit Varicose Vein Therapy

ImageDisplayZSupport30 million Americans suffer from Varicose Veins. Varicose veins occur when the valves in the legs no longer function properly. This causes blood to pool in the legs. these veins are often raised above the skin and can look like twisted bulging cords. Varicose veins may cause pain, aching and discomfort in the legs. If left untreated varicose veins may progress to a more serious disease called Chronic Venous Insufficiency (CVI). Without treatment, some people with CVI may experience symptoms that can be debilitating and can significantly impact quality of life, including leg or ankle swelling, leg fatigue, skin changes, rashes, ulcers, open wounds or sores.

Dr. Jason Klein is able to treat these veins with targeted endovenous therapy. This is a minimally invasive treatment using radiofrequency ablation or heat to seal off the affected vein so the blood gets re-routed to other veins.


Transcatheter Aortic Valve Replacement (TAVR) Program

tavr1Transcatheter Aortic Valve Replacement (TAVR) is a procedure for select patients with severe symptomatic aortic stenosis (narrowing of the aortic valve opening) who are not candidates for traditional open chest surgery or are high-risk operable candidates.

The TAVR procedure enables the placement of a balloon expandable aortic heart valve into the body via the catheter-based transfemoral delivery system. The TAVR procedure is designed to provide an alternative treatment to patients in whom the traditional open-heart surgery can not be performed.

Pacemaker Implantation

pacemakerA pacemaker is a small device that’s placed under the skin of your chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate. Pacemakers can relieve some symptoms related to arrhythmias, such as fatigue (tiredness) and fainting. A pacemaker can help a person who has an abnormal heart rhythm resume a more active lifestyle.

A pacemaker consists of a battery, a computerized generator, and wires. The generator sends the electrical pulses that correct or set your heart rhythm, and the wires carry pulses to and from various chambers of your heart and the generator.

Pacemaker surgery is usually done in a hospital. The surgery takes just a few hours, but you will stay in the hospital overnight so your doctor can monitor your heart rhythm and make sure your pacemaker is working properly.  Problems from pacemaker surgery are rare. Most people can return to normal activities within a few days.

Coronary Balloon Angioplasty

carotid_stenting_2Percutaneous transluminal coronary angioplasty (PTCA), or balloon angioplasty, is a procedure used to open narrowed coronary arteries. It is performed with a local anesthesia while the patient is awake. Patients whose angina has not been relieved by medications are generally the best candidates for PTCA. There are several other commonly used treatments for opening blocked arteries such as the Rotoblator procedure (tiny rotating blades) or Atherectomies (cutters) to cut away plaque buildup on the artery walls, or Stents (a little metal “scaffold”) that widens obstructed arteries.

Patent Foreman Ovale Closure


A patent foramen ovale (PFO) is a hole in the heart that didn’t close the way it should after birth. During fetal development, a small flap-like opening — the foramen ovale (foh-RAY-mun oh-VAY-lee) — is usually present between the right and left upper chambers of the heart. It normally closes within the first or second year of life. When the foramen ovale doesn’t close, it’s called a patent foramen ovale. With each heart beat or when a person with this defect creates pressure inside his or her chest – such as when coughing, sneezing, or straining during a bowel movement – the flap can open, and blood can flow in either direction directly between the right and left atrium. When blood moves directly from the right atrium to the left atrium, this blood bypasses the filtering system of the lungs (the lungs actually do dissolve tiny blood clots). If debris is present in the blood, such as small blood clots, it now passes through the left atrium and can lodge in the brain, causing a stroke, or another organ, such as the heart, eyes, or kidneys.