Seth Greiner

Seth Greiner is the Founder and Owner of Greiner Physical Therapy, a provider of home and on-site physical therapy and personal training in the heart of the Hamptons.

Seth graduated from Boston University in 2005 with cum laude distinction, earning his Bachelor and Master degrees. While studying at BU, he received his Personal Training Certification from the National Academy of Sports Medicine (NASM) a worldwide leader in the field of fitness. He is a certified Golf Trainer through the Titleist Performance Institute (TPI).

Seth’s patient centered treatment approach maximizes a person’s ability to function and move. Practicing with relentless passion, he remains dedicated to helping his patients achieve their goals. He believes that listening to each patient’s unique story is key to helping them move better. He enjoys working with people across all age and activity levels, competitive athletes, recreational weekend warriors, and people exercising for the first time in their life!

Over the past 15 years he’s worked in hospitals, schools, and outpatient clinics throughout the tri-state area. He has completed hundreds of hours of continuing education, most recently with a focus on management of Parkinson’s disease. Seth is the head coach at Rock Steady Boxing Hampton Bays, a noncontact boxing exercise class. The classes help people with Parkinson’s disease fight back to remain strong and independent

In 2015 Seth launched a mobile physical therapy practice, delivering services directly to patients and clients in the heart of the Hamptons. In 2021 the practice expanded to add on onsite location in Speonk, NY., providing outstanding outpatient care in the heart of the Hamptons.

Seth lives in East Quogue, NY with his wife and their two daughters. He is a loyal Steelers, Penguins, and Mets fan. He enjoys designing and exercising with High Intensity Interval Training (H.I.I.T) programs, practicing yoga, playing tennis, and spending time outdoors with his family.