Meet Our
Faculty
Our network of faculty spans the country, from Florida to Texas to California—and beyond. USAHS boasts the country’s largest teams of OT and PT faculty-practitioners, who draw from their diverse expertise to develop our blended learning components—the online coursework and real-world lab activities. Our faculty members have vast experience as clinicians and researchers, and they share a passion for educating and mentoring the next generation of practitioners.
Select from the filter options below to find practitioners that are relevant to your area of interest.



Anas (Sal) Ababneh, PT, PhD, MSc


Mansoor Alameri, PT, MPT, PhD


Halah Alateeq, PhD, CCC-SLP


Kefah Alshebber, PT, MS, PhD


Hazel Anderson, PT, DPT


William (Allan) Besselink, PT, DPT, PhD, Dip. MDT


Fabian Bizama, PT, MPT, PhD


Elise Bjork, PT, DPT, SCS


Angela Labrie Blackwell, PhD, OTR


Nicole Booher, MOT, OTR


Blaise Bourgeois, PT, DPT, MTC


Derrick Campbell, PT, DPT, DSc


Ashley Hall Campbell, PT, DPT


Maya Clark, PhD, CCC-SLP


Demetrius Collins, PT, DPT, LAT, ScD


Zoe Crawford, PT, DPT, NCS


Edla da Silva, PT, MSc, PhD


Catherine (Cat) Daniel, MOT, OTR/L


Elizabeth DeLuca-Berg, OTD, OTR, CAPS


Kristen (Kristy) Demers, PT, DPT


Brent Denny, DPT


Christopher Ebner, MS, OTR/L


Eman Fayed, PT, PhD, MS


Christine Fiestas, PhD, CCC-SLP


Laura Finkel, MS, CCC-SLP


Emily Frank Flack, OTD, PhD, MS, OTR, CHSE


Steven Gerardi, OTD, PhD, OTR


Nancy Hellman, PT, DPT, EdD


Eric Hicks, PhD, MS, OTR


Hatem Jaber, PT, MPT, DSc


Diana Julbe-Delgado, PhD, CCC-SLP


Casey Keck, PhD, CCC-SLP


Mohamed Khallaf, PT, DPT, MS, PhD


Lesley Khan-Farooqi, PhD, OTD, OTR/L


Elizabeth (Beth) Lambert, MOT, OTR


Warren McAdams, PT, DPT


Claryssa (Clary) Montgomery, SLPD, CCC-SLP


Matthew (Matt) Morretta, PT, DPT, DSc


Erica Ortiz, MCD, CCC-SLP


Christienne Parten, OTD, MEd, OT


Erik Perez, OTD, OTR


Rossana Ramires, M.SLP, CCC-SLP, CB-SLP, OMTS


Madeline Ratoza, PT, DPT


Whitney Reese, PT, DPT


Heather Rennerfeldt, OTR/L
Heather Rennerfeldt completed her bachelor’s degree in Exercise Science from the University of Sioux Falls in Sioux Falls, SD in 2005. Following a year as an adjunct instructor in the Exercise Science department at the University of Sioux Falls, she earned her Master of Science in Occupational Therapy from the University of South Dakota in


Kelly Roy, MS, CCC-SLP
Kelly Roy joined University of St. Augustine for Health Sciences in 2019. Her clinical and research interests include speech sound disorders, literacy and clinical education. Before focusing on full-time clinical education, she worked in various settings, including public and private schools, outpatient clinics and private practice.


Robert (Bob) Salvatori, PT, DPT, DSc, MBA
Dr. Robert (Bob) Salvatori joined the Austin, TX campus Doctor of Physical Therapy program core faculty in 2022. He possesses more than 40 years of clinical experience specializing in general orthopedics, spinal dysfunction, persistent pain management and vestibular rehab. Dr. Salvatori has served in a variety of clinical settings including acute care, rehab, home health


Meghan Savage, PhD, CCC-SLP


Michelle Sawtelle, PT, MPT, PhD


Kristin Schaffer Mendez, PhD, CCC-SLP


Lacey Sims, OTR
Lacey Sims earned a Bachelor of Fine Arts from the University of Texas at Austin and a Master of Occupational Therapy from Texas Woman’s University. Sims began her career in acute care at a level one trauma center and later transitioned to outpatient working with both neuro and orthopedic patients. In 2015, she earned her


Kunal Singhal, PT, PHD
Dr. Kunal Singhal joined the University of St. Augustine for Health Sciences in 2021. He is a licensed physical therapist, active researcher and passionate educator who has taught in Doctor of Physical Therapy program for more than five years. He completed his physical therapy education in India, followed by Doctor of Philosophy in Kinesiology (Biomechanics)


Lacey Spark, OTD, MOT, OTR/L
Lacey Spark attended the University of Oregon and Pacific University for her undergraduate career before earning her Master of Occupational Therapy from Pacific University in 2010. After graduation, she worked in community mental health practice and presented at the annual American Occupational Therapy Association conference on occupational therapy groups for early intervention and treatment of


Rudie Spigarelli, PT, DPT
Dr. Rudie Spigarelli has practiced in several outpatient clinical settings including multi-disciplinary, mobile, orthopedic and vestibular clinics. She has experience and certification in concussion management, manual therapy, visual-vestibular functional integration training, clinical instruction and practice management. She is a member of the American Physical Therapy Association, Texas Physical Therapy Association and Vestibular Rehabilitation Special Interest Group


Peyton Sykes, PT, DPT, EdD


Timothy Tu, DScOT, MEd, OTR


Amy Walters, PT, DPT
Amy Walters graduated from the University of Texas with a degree in Psychology in 1996. She then went on to physical therapy school at the University of Texas Medical Branch in Galveston, Texas. She moved to Seattle after graduation and worked in sports medicine with a focus on treating adolescent athletes. She received her sports


Brooke Weber, MS, OTR/L


Christopher Wise, PT, DPT, MTC, ATC, PhD


Ryan Wooley, PT, DPT
Ryan Wooley, PT, DPT is a physical therapist (PT) and educator who is passionate about delivering individualized, evidence-based physical therapy care to diverse populations. Dr. Wooley received his Doctor of Physical Therapy (DPT) from the University of St. Augustine for Health Sciences in 2015. He has completed the Evidence in Motion’s Orthopedic Residency program and

