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Tutors
Kiranjot Kaur, RN
Kiranjot Kaur is a Registered Nurse licensed by the New York State Board and a BSN graduate of Baba Farid University of Health and Sciences, Faridkot. She brings 2.5 years of teaching experience in Anatomy and Physiology for nursing students. Passionate about Human Anatomy and Physiology, she simplifies complex concepts with clinical examples to help students succeed in both coursework and exams.
Dr. Sara Marie Berrett, PT, DPT, ATC
Sara Marie is a physical therapist and certified athletic trainer that has completed a sports physical therapy residency in D1 athletics. She has recently finished her first year working in professional baseball and is eager to use her experience to help you learn and grow through the following content areas: Anatomy, Physiology, Kinesiology, Neuroscience, Musculoskeletal/ Orthopedics, and NPTE Preparation/Remediation. Let's get started!
Matthew Vraa, PT, DPT, DSc, PhD, MBA
Dr. Vraa is an expert tutor specializing in human movement science, anatomy, and health sciences coursework. Grounded in a strong background in kinesiology, biomechanics, and statistics, Matthew helps students simplify complex topics, master anatomical structures, and strengthen quantitative research skills. With expertise spanning musculoskeletal conditions, primary care screening, and specialized manual interventions—including dry needling, myofascial pain management, and HVLA thrust manipulation—Dr. Vraa equips learners with both foundational knowledge and practical clinical reasoning. Known for finding engaging ways to make learning enjoyable and fulfilling, Dr. Vraa believes studying health sciences should be engaging—and dad jokes are always included free of charge!
Demetrius Collins, PT, DPT, LAT, ScD
Dr. Demetrius Collins began his tenure as the South University Austin Physical Therapist Assistant (PTA) program director in September 2025. Prior to accepting the position, he was an instructor and assistant professor in the residential Doctor of Physical Therapy program at the University of St. Augustine for Health Science (2019- 2025) and an adjunct faculty member faculty in the South University- Austiin PTA program (2015-2019). He received his Doctorate in Physical Therapy (DPT) from Hardin-Simmons University in 2008 and Doctor of Science (ScD) from Texas Tech Health Science Center in 2018 with a focus in education. Dr. Collins’ clinical and research interests include orthopedics, sports, and concussion rehabilitation. He
maintains an athletic training license and does sideline coverage for high school sporting events. He serves as a member of the Item Writer Task Force and Examination Development Committee for the National Physical Therapy Examination (NPTE)- for physical therapists. When he is not working he enjoys spending time with his family and mentoring young men at church.
Colin Dennison, PT, DPT, OCS
Dr. Colin Dennison earned his Doctorate of Physical Therapy from the University of Mary Hardin-Baylor. With a strong passion for human anatomy, the musculoskeletal system, and orthopedic rehabilitation, Colin combines advanced clinical expertise with a commitment to helping students understand complex concepts and develop clinical reasoning skills. Having completed an orthopedic residency and earned his Orthopedic Clinical Specialist (OCS) certification, he brings specialized knowledge and practical experience to his teaching, helping students build confidence in applying foundational science to clinical practice.
JAMES R. LEWIS, PT, ScD, OCS, CFMT, CKTP
Dr. James Lewis is a physical therapist with over 25 years of clinical & teaching experience. He has a proven track record in teaching, mentoring, and advising. He is proficient with instruction in both university DPT programs and national CEU courses. His expertise in orthopedic rehabilitation, including manual therapy, therapeutic exercise, and clinical reasoning. See his LinkedIn Profile for more information.