Professional Staff

Kenhorst-Shillington

Keith L Good, LPT, CSCS

Keith Good, LPT, CSCS, is a native of Reading and is not only committed to his wife and kids, but to providing the highest quality physical therapy. Aside from being involved in strength and fitness for over 30 years, Keith Good has over 20 years of physical therapy experience, so you can trust you're being treated by qualified, experienced hands. Keith is also a member of a number of professional organizations that keep him up-to-date on all the latest developments in the ever-changing field of physical therapy and strength training.

Maria Potts, LPT

Maria joins us with over 25 years of physical therapy experience. She is a graduate of the University of Scranton with special emphasis on PNF and Manual therapy techniques. Maria also has a sports and fitness background with 8 years of coaching experience for junior high track and field. Good Physical Therapy is excited to have Maria on board and is accepting new patients.

Doug Kaylor, BS, CSCS

Director of Patient Relations
Exercise Physiologist

Thomas Kosmoski, PTA

Vestibular Rehabilitation Coordinator
Physical Therapist Assistant

Beth Krick, PTA

Physical Therapist Assistant

Amanda Kelly

Front Desk / Clerical

Dawn Phillips

Practice Representative

Chris Witmer

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Berks-Lehigh

Nathan Diffenbaugh, MSPT

Nathan (Nate) Diffenbaugh, MSPT resides in Kutztown with his wife and 2 daughters. He received his Master's of Science in Physical Therapy in 2004 from Misericordia University where he is currently enrolled in the doctoral program. Nate enjoys sports, fishing, spending time with family, and is a Sunday school teacher.

Nate has a strong neuro background having worked in both inpatient and outpatient programs. His experience includes patients with CVA, TBI and SCI. Nate specializes in Vestibular rehabilitation having completed the vestibular competency course offered by the APTA in conjunction with Emory University (Atlanta, Georgia). Nate has a strong interest in balance dysfunction, amputee rehab, and the use of orthotics, prosthetics, and assistive technology in rehabilitation. Nate is a Bioness L300 and Tibion Bionic Leg trained clinician.

As a therapist Nate is committed to providing individualized and compassionate treatment in order to help his patients achieve their maximum potential. He is focused on life long learning as a therapist so that he can provide the best possible care to his patients. Nate believes in helping a patient challenge themselves during therapy in order to reach their goals.

Wanda Mugar

Billing Director

Pottsville-Schuylkill

Mandy L. Bixler, PT, DPT

Mandy Bixler, PT, DPT, is a native of Schuylkill County and alumni of Pine Grove Area who obtained her graduate degree from College Misericordia and later a Doctoral Degree in Physical Therapy from Misericordia University. Residing in Schuylkill Haven with her husband, Mark, she enjoys running, outdoor activities, and swimming.

Throughout her career, Mandy has been serving patients for many injuries, including but not limited to orthopedic and sports medicine, vestibular and balance disorders, back and neck injuries, urinary incontinence disorders, and pediatric diagnoses. Mandy has been involved in many treatment environments, such as outpatient clinics, home health, and nursing homes.

As a former physical therapy patient in her younger years, Mandy truly understands, is sympathetic to, and can relate to the pain and frustration that one can feel after injury or diagnosis of a disorder. She is enthusiastic about the field of physical therapy and enjoys serving others to assist them in achievement of their goals.

Keri Holley, PTA

Physical Therapist Assistant

Heather Billus

Front Desk / Clerical