PHYSICIANS
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 Disease, Women’s Heart Disease and Heart Disease Prevention.
SHE IS BOARD CERTIFIED BY:
- The American Board of Cardiovascular Disease
- The National Board of Echocardiography
- The National Board of Nuclear Cardiology
Martin Cerda, DO
Dr. Cerda practices at Cardiovascular Institute of Scottsdale. He is board-certified in cardiology and internal medicine. Dr. Cerda completed his internal medicine residency at the University of Florida-Jacksonville. He then went on to serve as chief medical resident at the University of Florida-Jacksonville. He completed his cardiovascular fellowship at the University of Florida. He began practicing in Phoenix in 2022 and joined Cardiovascular Institute of Scottsdale in May of 2024. He has a special interest in clinical electrophysiology, cardiac devices, and heart failure.
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 Medical School in Piscataway, NJ where he distinguished himself in cholesterol research and scholarship. He generated many publications in the field of cholesterol and vascular physiology. He completed his internal medicine residency at Thomas Jefferson University Hospital in Philadelphia, and his cardiology fellowship at Robert Wood Johnson University Hospital in New Brunswick, NJ.
HE IS BOARD CERTIFIED BY:
- The American Board of Cardiovascular Disease
- The National Board of Echocardiography
- The National Board of Nuclear Cardiology
- The National Board of Computed Tomography
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 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 Cardiovascular Institute of Scottsdale, where he has helped many patients with varicose veins and venous insufficiency.
Dr. Haddad also helped to establish the carotid artery stenting program within the HonorHealth system.
HE IS BOARD CERTIFIED BY:
- 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
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 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 at 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.
HE IS BOARD CERTIFIED BY:
- American Board of Internal Medicine
- American Board of Cardiovascular Disease
- American Board of Interventional Cardiology
- National Board of Nuclear Cardiology
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 Cardiology fellowship from Texas Tech University in Lubbock, Texas he moved to Massachusetts for further sub-specialty training in Clinical Cardiac Electrophysiology at University of Massachusetts in Worchester.
SPECIALTY TRAINING
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.
ADVANCED PRACTICE PROVIDERS
EMILY WEBSTER, NP
Emily originates from Illinois where she received her Associate’s degree in nursing in 2009 at Kankakee Community College. She then moved to Arizona 2012 and completed her Bachelor of Science in Nursing degree at Grand Canyon University and continued on to get her Master of Science in Nursing degree and became a certified Family Nurse Practitioner in 2019. While obtaining her graduate degree, she spent the majority of her nursing career caring for cardiac patients on telemetry, but also spent time in the interventional radiology lab becoming familiar with critical care patients and angiographic procedures. She also has hands on experience with pre and post care in complex cardiology patients. She is board certified by the American Nurses Credentialing Center.
KIM KRMPOTIC, NP
Kim started her nursing career in 2007 as an LPN working in Pensacola Florida. She then attended Pima Medical Institute in Mesa, Arizona where she received her associate’s degree in nursing in 2010. In 2011 she returned to school at Arizona State University where she received her Bachelors in Nursing. She then went on to complete her Doctorate in Nursing at the University of Arizona graduating in 2015. She has been practicing Cardiology and specializing in Electrophysiology as a DNP since 2015. Kim is board certified with the American Nurses Credentialing Center and is a member of the Heart Rhythm Society.
RONALD J. ORDAS, NP
Ron Ordas received both his undergraduate and graduate degrees in nursing from Emory University in Atlanta, GA. He completed an additional year of training at Mayo Clinic Arizona, participating in their Cardiology Nurse Practitioner Fellowship, the only program of its kind in the country. He is board certified by the American Nurses Credentialing Center.
Prior to his work as a nurse practitioner, he studied both English and Biochemistry at Drew University in Madison, NJ and The University of North Carolina at Chapel Hill, NC. He spent many years researching both liver and kidney disease at Duke University and Emory University before transitioning into nursing practice in 2009.
Sarah Davis, PA
Kimberly Novenski, NP
Kimberly started her medical journey in Cardiodiagnostics at Scottsdale Memorial Hospital in 1992. She then worked as a Medical Assistant in the Family Practice setting in Arizona and Florida over the next several years. She obtained her Associates Degree from Daytona State College in 2010, and then went on to graduate with her Bachelor Degree from University of Central Florida in 2013. Her nursing career provided her the opportunity to work in pediatric CVICU, Surgical and Neurological Telemetry, Emergency Medicine, Peri anesthesia, as well as several roles in nursing leadership. She graduated with her first Master’s degree in Executive Nursing Leadership in 2019, and then in 2022 graduated with her second Master’s degree in Nursing becoming a certified Nurse Practitioner. She is board certified through the American Association of Nurse Practitioners, and is a Cardiovascular Team Member of the American College of Cardiology.
Megan Rayyan, AGACNP-BC
Hospital Nurse Practitioner
Megan Rayyan was born and raised in Scottsdale Arizona where she started her Nursing career in 2016. She graduated from Grand Canyon University with a Bachelor's in Science and Nursing and continued on to get her Masters in Acute Care Nurse Practitioner in 2022. While obtaining her graduate degree, she spent 6 years in a Cardiac Intensive Care unit caring for critical cardiac patients as well as taught nursing courses at Gateway Community College. She is board certified by the American Nurses Credentialing Center.
Shayla Johnson, NP
Shayla is a board-certified Family Nurse Practitioner specializing in adult cardiovascular care. She received her bachelor of science in nursing from South Dakota State University and upon graduating she began her career as an adult critical care nurse at Sanford Health in Sioux Falls, SD. She later graduated with her master's degree in science in nursing. After graduating, she continued her passion for cardiology as a new nurse practitioner in South Dakota working in the inpatient and outpatient setting before moving to Arizona in 2024 to continue to practice in adult cardiovascular care.
In her free time, Shayla enjoys spending time with her family and friends, being outdoors, golfing, and interior decorating/crafting.
Misty Curry, PA
(Physician Assistant Profile)
Misty Curry is a certified physician assistant by the NCCPA (National Commission for the Certification of Physician Assistants) and a native of Arizona. She graduated Magna Cum Laude with a Bachelor of Science from ASU then received her Master of Science in Physician Assistant Studies from A.T. Still University in Mesa, AZ. She has practiced in cardiology since 2012.