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.

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.

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.