Our large and qualified team is highly trained and experienced. We focus on an empathy-based approach, and our patients love us. At Impact Physical Therapy, we are changing lives and bringing people back to being pain free naturally.

Dr. Eric Hefferon

Dr. Eric Hefferon received his advanced doctorate degree in physical therapy from the innovative A.T. Still University. He has been practicing in the west valley for 9 years and has made strong ties to local gyms and medical practitioners. Dr. Hefferon started Impact Physical Therapy due to his passion for an individualized approach.

Dr. Tamara Hefferon

Dr. Tamara Hefferon is a Doctor of Physical Therapy who has a strong passion instilling and empowering others to achieve optimum health, believing strongly in the mantra Exercise is Medicine. She received her undergraduate degree in Psychology from the University of Arizona, with an emphasis in exercise physiology.

Dr. Sarah Somers

Dr. Sarah Somers is a Doctor of Physical Therapy who has a myriad of passions in the health and wellness world. She received her undergraduate degree in Kinesiology with an emphasis in Exercise Physiology from Arizona State University. A developing athlete still, she has a background in soccer, golf, basketball, and softball, but loves aspects of all sports. This passion for athletics is where her desire to impact others lives developed. She believes in the power of human touch, and her doctorate degree allowed her desire for movement and manual therapy skills to evolve.

Kelly Cefalu

Kelly is from a small town in Wisconsin, Waunakee. She earned her Bachelor’s Degree in Business-Marketing at the University of Wisconsin-Stevens Point where also played collegiate volleyball. She moved to Phoenix in August 2017 and has loved the change of scenery, the weather, and the endless amount of things to do in the valley.

Ashley Frye

Ashley is our lead experience specialist at Impact Physical Therapy. Her passions include instructing Pure Barre, staying active, live music, and quality time with family, friends, and her dog Billy. Ashley could also be described as a “foodie,” as she loves to try new restaurants and thoroughly enjoys pairing wine with food.

Macey Ehlo

Macey was born and raised in the small town of Pullman, Washington. She graduated from Eastern Washington University, where she received a degree in Therapeutic Recreation. Macey completed a 16-week internship at St Luke’s Rehabilitation Center in Spokane, Washington, where she focused on community reintegration and getting patients back to doing what they enjoy.

Erin B Dehmlow

Erin Dehmlow, is Impact’s Director of Operations. If you see her in the clinics, you may often hear her referred to as “B.” After graduating from University of Arizona, she received her Masters in Career Development from the College of New Rochelle in New York.

Megan Onofray

Megan first earned her Bachelors Degree in Exercise Science from the University of Massachusetts while playing Division I water polo. She then went on to earn her Master’s in Physical Therapy from Maryville University in St. Louis. She has been in the valley, working as a physical therapist for the last 10 years. She has treated […]

Dr. Uche Nwambuonwo

Dr. Uche was born in Nigeria. After finishing high school in Arizona, he earn his Bachelors degree from Northern Arizona University and helped start the Refuge Youth Center in Phoenix, AZ. His compassionate nature and superb listening ear led him to pursue his Doctorate in Physical Therapy, after being a physical therapy aide for seven […]

Margo O’Keefe

As the newest member of the Impact Physical Therapy Team, Margo joined us in September 2019 as a Front Office Coordinator. After visiting Arizona for so many years, she recently decided to call it home, joining their son, Ryan, who moved here after college. Margo maintains health and wellness as an important part of her […]


Make an appointment and come see our office and meet the team. We look forward to making a difference in your life!