Clinical Staff

Peg and Whisper Peg Maher Grey, PT, DPT, MA, OCS, ATC Peg Maher Grey, PT, DPT, MA, OCS, ATC


Peg graduated from the University of Connecticut with a Bachelor's in Physical Therapy in 1980 and in 1996 with a Master's degree in Exercise Physiology and Sports Medicine. In 1997, she completed a post Master's certificate program at the University of Connecticut, School of Business entitled The Executive Program in Managed Health Care. Then in 2010, she received her Doctorate in Physical Therapy from the EIM Institute of Health Sciences. Peg is also Board Certified in Orthopedics from the American Board of Physical Therapy Specialties. She is a certified athletic trainer and also has advanced certifications in personal training, aquatic and vestibular rehab. She is a certified Transitions™ Lifestyle Coach. Some of her special interests include: total knee and shoulder replacement, dizziness, aquatics, dance rehab, nutritional counseling to improve health and wellness, Pilates, and sports related injuries. She teaches our on-going Transitions™ weight loss program about healthy eating and lifestyle management for Grey Physical Therapy.

Whisper Peg has been involved in the American Physical Therapy Association (APTA) locally as well as nationally having served in numerous leadership positions including President of the Connecticut Chapter, Chief Delegate to the national House of Delegates, Committee Chair positions and has served as a consultant to the APTA regarding billing and coding, Medicare, and workman’s compensation issues. She is a frequent speaker for the Private Practice Section and other APTA groups on various business topics.

Peg lives in Enfield with her husband, Chuck, and her hearing dog, Whisper. She has 2 grown children and enjoys spending time with them and her nieces and nephews. She loves golf, photography, cooking, hiking, letterboxing, running, UConn Basketball, Boston Red Sox, scrapbooking, Canasta, and teaching exercise classes.


  • BS - University of Connecticut
  • Advanced MA - University of Connecticut
  • DPT - EIM Institute of Health Sciences


  • OCS - Orthopedic Certified Specialist
  • ATC - Athletic Trainer Certificate
  • Trigger Point Dry Needling Certified
  • Certified Transitions Lifestyle Coach

Becky Feliciano Becky Feliciano, PT, DPT

Clinic Manager

Becky has worked at Grey Physical Therapy since 2002. She graduated from Springfield College with a BS in 2000 and her MS in Physical Therapy in 2001. In 2013, Becky graduated with her Doctorate of Physical Therapy from the Evidence in Motion Institute of Health Sciences. Some of her clinical special interests include: total knee replacement, rotator cuff repairs, trigger point dry needling, and sports related injuries.

Becky enjoys spending time with her husband and children. She is an avid fan of the Boston Red Sox, New England Patriots, and Boston Celtics teams. In her spare time, she enjoys photography and working out.


  • BS - Springfield College
  • MS - Springfield College


  • Trigger Point Dry Needling Certified

Susan Mercik-Davis, PT, DPT, MS

Sue graduated from Boston University in 1991 with a BS in physical therapy. She then received her advanced Master's in Orthopedics from Massachusetts General Hospital (MGH) Institute of Health Professions in 1998 and her Doctorate in Physical Therapy in 2006. Sue is a professor for the physical therapy program at American International College. She has special expertise not only in orthopedics but also in joint mobilization and manipulation, as well as the current evidence when using modalities (heat, cold, electrical stimulation, etc.) for developing patient treatment programs. Sue works for Grey Physical Therapy as a part-time per diem physical therapist.

Sue is also our local celebrity as she was inducted into the Enfield Athletic Hall of Fame in 2005 for her acclaim as a field hockey player not only at Enrico Fermi High School, but also for Boston University. She now enjoys golfing and spending time with her husband and 3 children. She is an enthusiastic fan of the Boston Red Sox and Pittsburgh Steelers.


  • BS - Boston University
  • Advanced MS - Massachusetts General Hospital (MGH) Institute of Health Professions
  • tDPT - Massachusetts General Hospital (MGH) Institute of Health Professions

Zachary Demers, PT, DPT

Zach has been working at Grey Physical Therapy since 2014. He graduated from the University of Massachusetts in 2011 with a BS in Kinesiology, then went on to graduate from Springfield College in 2014 with his Doctorate of Physical Therapy. He is currently enrolled in an orthopedic residency program through Evidence in Motion to obtain certification as an orthopedic specialist. Zach enjoys treating patients with a wide variety of conditions, and has a special interest in helping patients manage low back pain, and helping patients recover following a joint replacement.

Zach is a lifelong resident of Agawam, Massachusetts. In his free time, he enjoys exercising and spending time outdoors.