Meet our Staff

Donna Barthe, PT

Donna graduated from Quinnipiac College in 1978 with a BS degree in physical therapy.  With a career spanning three decades, she brings a comprehensive knowledge of complex orthopedics and advanced manual therapy to her work at Casco Bay PT. Combining skills, energy and compassion, she motivates her patients to reach their highest potential for health and wellbeing. Prior to co-founding Casco Bay Physical Therapy in 1986, Donna worked in a variety of settings in Philadelphia, Pennsylvania and Portland, Maine. Donna balances her life by spending quality time with her family and friends, working in her garden and antiquing. Donna’s email is:

Charlene Post, PT
Charlene began her career in physical therapy in San Francisco, eventually moving to Maine and starting Casco Bay Physical Therapy with Donna Barthe in 1986.  With a BA degree in psychology and a BS degree in physical therapy from Northwestern University, her commitment to lifelong fitness and holistic wellness guides her treatments. While her clinical experiences include sports medicine, post-operative rehabilitation and general orthopedics, her special interests include Kinesiotaping™, Graston Technique®, advanced manual therapy, and craniosacral therapy. Charlene lives in Falmouth with her husband. She participates in many outdoor sports and activities such as hiking, biking, and sailing. Charlene’s email is:



Alayna Richardson, PT, DPT, Cert. DN

Alayna joined our Casco Bay Physical Therapy team in January 2016 and has quickly become an important member of our rehab team. She earned her Doctorate in PT from Husson University in May of 2015. Alayna has taken continuing education courses in Kinesiotaping™Graston Technique®Dry Needling, Mulligan Mobilizations for the Upper Quadrant, and current treatments of torticollis. During her education, Alayna completed four clinical rotations in the outpatient, inpatient, and pediatric settings. She has gained experience in manual therapy, therapeutic exercise, NICU consultations, serial casting, and aquatic therapy. In her leisure time, Alayna likes to spend time with family, exercise, read, hike, and participate in water sports.  Contact Alayna via email:​ 

​Tracey Merrill, PT

Tracey graduated from the University of Vermont in 1992 and then moved to Maine, loved it and never left! She has worked primarily in adult orthopedics for most of her career and became a Board Certified Orthopedic Specialist in 2002. With an extensive background in a variety of orthopedic conditions, she uses multiple manual therapy techniques and therapeutic exercises that she has learned through extensive continuing education, as well as personal experience. She tries to think outside the box and work with the body as a whole. She has interests professionally in mind/body connections and alternative therapies while still keeping a foothold in science and evidenced based practice. Tracey also enjoys working with veterans and is part of Team Red White and Blue and has volunteered on a hospital ship in Africa for extended periods. She enjoys travel as well as her time in the outdoors. 


​​Office Staff

Julia Cupo
Julia joined Casco Bay PT in November, 2019 after moving from Pennsylvania. She and her husband had always dreamed of living in Maine, so after they became empty nesters, they made the move to Maine. Julia is happy to help you with your insurance questions and all billing matters, as well as scheduling your appointments.

Heather Morin

Heather has worked in healthcare for over 25 years and joined our front office staff in the spring of 2023. She helps patients with scheduling appointments, checking in and collecting co-payments.