Our Physical Therapists

Tara Stewart


Tara graduated with her Doctorate in Physical Therapy from Elon University in 2010. She started practicing professionally in the outpatient sports medicine setting in 2011 with a focus on manual therapy and functional based exercise.
Being an avid believer in integrative medicine and a holistic approach to health care she began seeking ways to integrate this into her practice. In 2012 she started coursework in the Professional Yoga Therapy studies certification program which integrates evidence-based Physical Therapy principles and research with the traditional practices of yoga an Ayurvedic medicine. She plans to complete the program in spring of 2015 and currently teaches individual and small group yoga therapy sessions.
Since joining Pilates Seattle International she has further expanded her practice to include Pilates and is taking courses in order to become a certified Pilates instructor.
Outside of the clinic she enjoys practicing yoga, cooking, playing the violin, cycling, dancing, traveling, and spending time outdoors.




Joy Beatty


Joy received her Bachelor of Arts degree in 1994 from the University of Louisville. She continued her education at the University of Kentucky in Lexington and received her Bachelor in Health Sciences in 1995 and a Masters in Physical Therapy in 1997. While Joy was studying Physical Therapy, she learned about the work of Joseph Pilates through her volunteer work with the Lexington Ballet. She recognized the unique way Pilates combines strengthening with body awareness. Joy saw the potential to augment rehabilitation and increase her skills as a physical therapist. Studying the work of Joseph Pilates has helped her teach patients how to use their bodies properly while performing functional exercise. Her Physical Therapy expertise is in body mechanics, especially for biking, running, and general evaluation of all sports. Joy is active in rock climbing, triathlon training, loves to travel, and balances extreme physical challenges with her love of knitting.




Sachiko Glass


A native of Japan, Sachiko earned her Bachelor of Arts degree in Psychology in 1965 at the University of Education, Japan. In 1966 Sachiko and her husband moved to the United States and after a six-year residence in Berkeley, California, pioneered north to Alaska. Here they built their house by hand, tilled the soil, hauled water, kept bees, hunted game and raised two children. For an entire idyllic decade the Glass family lived a kind of rugged individualism most of us idealize but avoid. Furthering an education in academia drew Sachiko and her family back to civilization via Seattle. She received her Bachelor of Science in Physical Therapy from the University of Washington in 1983. She recently retired as a Physical Therapist at the Swedish Medical Center in Seattle to practice fulltime at PSI.

In 1992 Sachiko encountered the work of Joseph Pilates while attending Dance Medicine Seminars in California. She quickly realized its potential effectiveness for all body types including specific rehabilitation capabilities for particular weaknesses. Her interest and enthusiasm pressed her to pursue the Instructor Training Program at Pilates Seattle International (PSI). Sachiko was a graduate of PSI’s first class in 1993. After receiving her certification, she has enjoyed her employment at PSI as a Physical Therapist and a Pilates Instructor. Sachiko’s integration of the conditioning and therapeutic aspects of both Pilates and Physical Therapy adds to her success in treating patients. She has 20 years of experience in Orthopedic Outpatient Physical Therapy and three years experience with Acute Inpatient Physical Therapy. Sachiko also has a certification in Neurodevelopment Therapy for Hemiplegia. Areas of expertise include: spinal & sports orthopaedics, dance injuries, postural training and the Pilates method of body conditioning. When Sachiko is not working in healthcare she devotes her time to gardening.



Zhenia Umbers


Zhenia was born in Moscow, Russia. She showed interest in dance at the age of 3 and at 4 was accepted into Bolshoi Ballet School.  That started a lifelong love affair with dance, movement and music.  When her family emigrated to NYC in 1979 she decided to become a physical therapist. She received advanced degree in physical therapy in 1990. Throughout her career Zhenia continued to advance her skills and knowledge in treatment of the human body. Over the last 23 years as a physical therapist, Zhenia owned and operated several physical therapy private practices including a pediatric home and school based agency. She received advanced training in Norwegian Medical Exercise Therapy (MET), Cervical and Temporal Mandibular disorders, became a certified prenatal and postpartum instructor as well as a Master Reiki Practitioner.

Zhenia’s treatment is always patient focused and is eclectic in its approach.  She places a large emphasis in giving patients the tools to help them work towards independence. She has strong interest in manual therapy and exercises, as well as in exploring connection between mind and body.   The ultimate goal is to empower the patient to take an active role in their recovery, prevention of injury or improvement of athletic performance. Zhenia enjoys incorporating Pilates into her physical therapy practice and is looking forward to getting certified as a Pilates Instructor.

Zhenia moved to Washington State in May of 2009, after traveling extensively through Europe and Asia with her family.  She now lives in Redmond.  When not working, she enjoys dancing Argentine Tango, skiing or putting on crampons and climbing the many beautiful mountains of Washington State.



Tracey MacNeill


Tracey MacNeill, MPT has a master’s degree in physical therapy from University of Washington, a BA from University of Vermont, and completed the massage practitioner program from Connecticut Center for Massage Therapy. 

She continued her physical therapy education with courses in Gary Gray functional exercise, kinesiotaping, manual therapy by NAIOMT, Upledger Institute, and Tom Myers. She incorporates a comprehensive approach to recovery and the prevention of injury. She believes the body must move to heal properly, even in early stages of injury. These techniques and the educating her patients with individualized home programs form a central aspect of her rehabilitation. Independence in self care and reaching full recovery are her goals for all. She enjoys working with all ages and fitness levels. Tracey is currently in the apprentice program at PSI and is excited about using the techniques to help her patients.

Tracey recently returned to Seattle after spending 3 years on the East coast. She loves traveling with her husband and daughter, the outdoors, Pilates, yoga,  and was a collegiate gymnast.