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Physical Therapists

Paul J. Mackarey, PT, DHSc, OCS


Dr. Mackarey was born and raised in Scranton, PA and graduated from Central High School in 1976. He received his BS in Physical Therapy from Temple University in 1981. At that time, he had the honor of studying orthopaedic rehabilitation in London, England as a Fulbright Scholar Finalist. In 1986, he received his MS in Human Resources and Health Care Administration from the University of Scranton. In 2000 he was board certified in Orthopaedic Physical Therapy from the American Physical Therapy Association. In 2001 he received his doctorate in Health Sciences from the University of St. Augustine.He is also the author of the “Health and Exercise Forum” featuredevery Monday in the Health and Exercise Science Section of the Scranton Times-Tribune. In addition, he can be heard on ESPN Radio’s “Trainer’s Table with Dr. Paul Mackarey” every Monday morning.

Dr. Mackarey taught orthopaedic physical therapy classes at the University of Scranton, PT Department and Keystone College, PTA Department. Presently, he is an Associated Professor of Clinical Medicine at The Commonwealth Medical College (TCMC) in Scranton, PA. He has also instructed many continuing education courses at various health care institutions. He has authored and coauthored several clinical and scientific research papers in various professional journals.

Dr. Mackarey is dedicated to patient satisfaction and quality healthcare. His areas of expertise are general orthopaedic rehabilitation, post fracture management, neck and low back pain, total joint replacement, shoulder rehab, head, neck and TMJ dysfunction, running and other sports-related injuries.

Dr. Mackarey loves to play golf, ski and travel with his family. He is an avid runner and has completed more than six marathons. He resides in Dalton with his wife, Esther, and their two sons, Paul and John.

Esther G. Mackarey, PT

Vice President

Esther was born and raised in Lebanon, PA and graduated from Lebanon High School in 1977. She received her BS in Physical Therapy from Temple University in 1981. She has worked at Pocono Medical Center and co-founded MMPTC in 1983.

Esther can be found in the clinic treating patients and ensuring patient satisfaction. She provided services in rehabilitation, home care, and long-term care facilities on a part-time basis while raising her family. Esther has attended numerous continuing education classes and has a special interest in geriatric neurology and orthopaedics. She is a 25-year member of the American Physical Therapy Association (APTA).

Esther enjoys golfing, skiing, gardening, and traveling with her family. She resides in Dalton with her husband, Paul, and their two sons, Paul and John.

Paul John Mackarey, PT, DPT

Clinic Director

Dr Paul John Mackarey developed a passion for physical therapy at a very young age. He was raised in a family of physical therapists and working at Mackarey & Mackarey Physical Therapy since age 13 taught him many things. First, he learned the satisfaction and gratification from helping others regain and improve their lifestyle and independence. Also, he developed a respect for the complexity and ever-changing field of healthcare, specifically, physical therapy. Furthermore, Dr. Mackarey feels that the unique relationships established with patients is both rewarding and gratifying. For these reasons and many others, he set his sights toward making physical therapy, not only his profession but also his lifelong vocation.

In 2012, Dr. Mackarey graduated from Temple University with a bachelor’s degree in Health Science and Kinesiology. Following graduation, he spent the next year observing several orthopedic surgeries and working in a teaching facility specializing in orthopedics and hand rehab to better understand the individuals he would soon serve. He attended Temple University’s Doctor of Physical Therapy Program and graduated in 2015. For 6 months Dr. Mackarey directly studied under the tutelage of an Orthopedic Clinical Specialist and Residency Trained Physical Therapist to further enhance his clinical skills. The experience fostered a passion for evidence-based treatment with particular interest in low back and vestibular disorders. He is proud to direct his treatments with the most current physical therapy approaches supported through research. He implements a variety of manual therapy techniques that are individualized for each patient to help expedite their recovery.

Currently Dr. Mackarey returned to his hometown of Scranton, PA with his wife, the former Carina Shults. He is eager to participate in the health and wellness of people of NEPA. When not working, he enjoys traveling, hiking, kayaking, skiing, golfing and spending time with family and friends.

Catherine Heimrich, PT, DPT

Staff Physical Therapist

Dr. Catherine Heimrich graduated from St. Joseph’s University in Philadelphia, PA in 2011 with a Bachelor of Science degree in Biology. She completed her Doctorate of Physical Therapy from Temple University in 2014. Prior to joining Mackarey & Mackarey Physical Therapy Consultants, she practiced as a physical therapist at Regional Hospital of Scranton.

She particularly enjoys treating patients with orthopaedic and balance conditions, and she has continued to further her skills through several continuing education courses. Professionally, Catherine is a member of the American Physical Therapy Association, and she has participated as a clinical instruction for PT students. She currently resides in Clarks Summit, and in her free time she enjoys travel, yoga, dance, and spending time outdoors.


Zachary Sleeman, PTA

Zachary Sleeman graduated from Mercyhurst University in Erie, PA in 2015 after earning the Associate Degree of Physical Therapist Assistant.  He had previously earned his Bachelor of Science degree in Community Health and Associates of Applied Sciences in Health Professions in 2011 from Lock Haven University.  He is a Pennsylvania Board Certified Physical Therapist Assistant and holds advanced Indirect Supervision licensure. In addition, he is certified in CPR and First Aid.

Zach particularly enjoys assisting all levels of athletes in their rehabilitation of sports related injuries. He also enjoys helping patients before and after orthopedic surgery. As someone who is always on the move, one of Zach’s favorite part about the rehabilitation process is that he gets to help people return to the activities they love.  In his spare time, Zach enjoys spending time with his wife, son, and dog at home and in the great outdoors.  He is an avid outdoorsman and he enjoys hunting and fly fishing, along with hobbies such as golf and kayaking.

Sarah Singer, PTA

Sarah Singer has her associates degree from the Penn State Physical Therapy Assistant program and a Bachelors of Fine Arts degree from Marywood University. She’s a board certified Physical Therapist Assistant who is also certified in CPR, First Aid, and has her indirect supervision certification.

As a runner and cyclist who has healed from her fair share of sports injuries she has the drive to get you back up and running as quick as possible (no pun intended). She also has a son and husband who love to chase her around and keep her on her toes. Sarah has worked at the Scranton Running Company and can also guide you in the right direction with proper footwear and the shoe fitting process. Her passions lie in injury prevention through assessing running and walking form and proper bike fit.