Our Team
Meet the Minds Behind Our Mission
Joshua Kaplan
CEO and Founder
Doctor of Physical Therapy
Josh graduated from Boston University’s athletic training and physical therapy program back in 2016, and started his career at an outpatient clinic in San Francisco. Over the following 6 years he worked in a range of physical therapy settings including acute rehab, outpatient, and skilled nursing on both the east and west coasts with a few stops in Colorado. No matter where he found himself, he always enjoyed his work as a physical therapist. As covid emerged in 2020 Josh found himself in Western Massachusetts in a nursing home setting. Different emerging trends in healthcare led to the founding of EnPhysion Health in February of 2021 and since then he has focused intently on creating a high quality membership experience that transforms the lives of EnPhysion’s clients. In his free time he enjoys family time, skiing, enlightening conversation, traveling, and spending time with friends.
Rebecca Diamantopoulos
EnPhysion Trainer
Becca earned her Bachelor of Science in Exercise Physiology from UMass Lowell before completing her Physical Therapist Assistant degree at Bay State College. With over eight years of experience in outpatient orthopedic physical therapy, she joined the EnPhysion team in 2025. Becca is passionate about promoting "exercise as medicine" and thrives on helping patients of all ages and ability levels return to the activities they love. She was drawn to EnPhysion’s mission to effectively bridge the gap between rehabilitation and lifelong fitness. Outside of the clinic, Becca enjoys snowboarding, visiting family, and spending time outdoors with her husband and son.
Kate O’Sullivan
EnPhysion Trainer
Kate joined Enphysion in 2022 after 10 years working in a gym setting and 5 years working in both outpatient and home care physical therapy. Kate was drawn to Enphysion’s philosophy believing wholeheartedly that movement is medicine and daily movement is imperative to living a fulfilled, healthy life! When Kate is not seeing clients, she loves spending time with her three dogs and working out in her home gym!