Meet The Impact Team
At Impact Physical Therapy, our motto is “experience matters”. Our entire team is highly skilled and experienced. When you visit us, plan on expert treatment form top physical therapists and technicians from around the valley.
Who We Are
The Impact Team
Personalized Physical Therapy That Puts You First
The Impact Physical Therapy Team is comprised of compassionate, driven and experienced individuals that have one common purpose: To help you stay active and healthy so you can make memories with the ones you love.
Personalized Care. Expert Team.
Meet Our Team
Dr. Eric Hefferon
PT, DPT
Physical Therapist, Owner
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 11 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 healthcare approach.
Dr. Tamara Hefferon
PT, DPT, OCS
Physical Therapist, Owner
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. Uche Nwambuonwo
PT, DPT
Physical Therapist
Dr. Uche was born in Nigeria and migrated to the United States in 1996. After finishing high school in Arizona, he earned his bachelor’s degree from Northern Arizona University.
Dr. Pia Salcedo
PT, DPT, OCS
Physical Therapist
Born and raised in Buena Park, California in Orange County, Dr. Pia later moved to Los Angeles to attend UCLA, where she graduated in 2018. She then stepped outside her Southern California roots to pursue her Doctor of Physical Therapy degree at Duke University.
Dr. Nick Newquest
PT, DPT
PV Clinic Manager
Dr. Nick is a Doctor of Physical Therapy originally from Chicago. He earned his doctorate from Rosalind Franklin University of Medicine and Science in 2020 and has since been practicing in the Phoenix area, delivering high-level, individualized care to help clients move better, feel stronger, and return to the activities they value most.
Dr. Ti’Anna Bruce
PT, DPT
Physical Therapist
Ti’Anna Bruce, PT, DPT, earned her Doctor of Physical Therapy degree from Midwestern University in Glendale, Arizona. With a background in exercise science and clinical experience across outpatient orthopedics and inpatient rehabilitation, she is passionate about helping individuals move with confidence, build strength, and return to the activities they love. She takes a patient-centered approach that combines evidence-based practice, individualized care, and functional movement.
Dr. Tina Spivey
PT, DPT
Biltmore Clinic Manager
As a proud Phoenician, Dr. Tina earned her Bachelor of Science in Kinesiology from Arizona State University, graduating with honors. She continued her education in-state, earning her Doctor of Physical Therapy degree from Northern Arizona University in Flagstaff in 2017.
Dr. Mark Gerges
DPT, PT
Dr. Mark grew up in Orange County, California, before heading to Arkansas to attend Harding University. He enjoys helping others move better, feel better, and get back to doing what they love.
Dr. Abel Sanchez
PT, DPT
Physical Therapist
Dr. Abel Sanchez grew up in South Dakota before attending Creighton University in Omaha, Nebraska, where he earned his Bachelor of Science in Exercise Science and Pre-Health Professions with a minor in Business Administration. He continued his doctoral studies at Creighton to earn his Doctor of Physical Therapy degree, completing his final clinical rotations right here in the Phoenix and Scottsdale metro area. After just one year of desert sunshine, he knew he had officially found home.
Dr. Nina German
PT, DPT
Physical Therapist
Dr. Nina is originally from Jackson, Mississippi. She earned her Bachelor of Science in Biology from Xavier University of Louisiana, where she played four years of collegiate basketball. After graduating, she moved to Arizona to pursue her Doctorate in Physical Therapy at A.T. Still University in Mesa, Arizona.
Dr. Miki Williams
PT, DPT
Scottsdale Clinic Manager
Originally from Bulgaria, Dr. Miki Williams moved to Dallas, Texas at age six and grew up in the heart of the Lone Star State. She earned her Bachelor of Science in Kinesiology from the University of North Texas in 2016 before relocating to Arizona with her husband.
Dr. Graham Leonard
PT, DPT
Physical Therapist
Dr. Graham was born and raised in Scottsdale, Arizona, and graduated from Arizona State University with a degree in Exercise Science in 2018. After spending four years working as a tech and CrossFit coach, he pursued his passion for physical therapy at Franklin Pierce University, where he graduated in 2024.
Dr. Brianna Ramsey
PT, DPT
Peoria Clinic Manager
Dr. Brianna Ramsey, PT, DPT, was born and raised in Peoria, Arizona. She received her Bachelor’s of Science in Athletic Training from Minot State University in North Dakota from 2013 to 2017.
Dr. Cassidy Elinski
PT, DPT
Physical Therapist
I was born in Phoenix, AZ and grew up in Surprise, AZ. I have 3 sisters and my parents have the cutest doggo named Kody (Nickname Kody Bear) who is an Australian shepherd. I played soccer in middle and high school with my sisters! I went to NAU for undergrad and loved living in Flagstaff for 4 years getting to try different things like snowboarding and exploring different hiking spots.
Dr. Matthew Koster
PT, DPT
Physical Therapist
Dr. Matt was born and raised in Grand Rapids, Michigan. He completed his undergraduate schooling at Calvin College (now Calvin University) earning a degree in Pre-Professional Kinesiology with a focus in Physical Therapy. Shortly following graduation, Matt explored his interest in personal training in San Francisco prior to beginning graduate studies at Franklin Pierce University in Goodyear, Arizona.
Ashley Frye
Office Manager
Ashley is our 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.
Erin B. Dehmlow
Director of Operations
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.
Nicole Fisk
Office Manager
I am an Arizona native and love the desert landscape. My husband and I stay busy with our son Paxton and our dog, Sammy. In my free time I enjoy working out, baking, reading, spending time with friends and family, and trying new restaurants. I am a bit of a homebody but do enjoy a good day trip or visits to the beach!
Christianna Molinario
Patient Care Coordinator
Christianna is a Front Office team member at Impact Physical Therapy in Paradise Valley.
Melissa Dozal
Patient Care Coordinator
Melissa is originally from New Mexico but has lived in Phoenix since she was 7. She loves being a mom to Isaiah-22, Breanna-20, and Roman-9. Spending time and being intentional with family and friends is important to her.
Zakiak Perez
Patient Care Coordinator
Zakiah joined the Impact Physical Therapy team in 2026, bringing her passion for connecting people, building meaningful relationships, and strengthening community ties.
Lara Jones
Billing & Finance Assistant
I am an Oregon native and I have lived in Arizona for almost 10 years. Outside of work, I love to spend time with my 2 great kids and my husband. I also love to cook, travel, and enjoy spending time outdoors… especially doing anything water related!
Kendall Billings
Patient Care Coordinator
Originally from the PNW, I moved to Arizona in 2020 in search of the sunshine. I am the mother of 4 kids; Elise 19, Emery 17, Reese 13, and Collin 12. Together we love hiking, camping, concerts, and food carts!
Rayne Sleightor
Patient Care Coordinator
Rayne grew up in Show Low and moved to Phoenix about five years ago. While she’ll always miss the cooler weather and small-town feel, Phoenix has definitely become home. She loves the mix of city life and easy access to the outdoors.
Skye Labostrie
Patient Care Coordinator
Sky has been a Patient Care Coordinator at Impact Physical Therapy in Peoria since 2025. She highly enjoys building a relationship with our patients.
Real Stories. Real Results.
Trusted by Our Patients
See what patients have to say about their experience with Impact Physical Therapy and the difference personalized, one-on-one care has made in their recovery, movement, and quality of life.
Beyond happy with the service I have been provided at Impact. Dr. Sarah has gotten me back to 100% in little to no time at all.
Tommy
