OSTS is an independently owned outpatient physical therapy clinic that's been in business since 1986. Our highly trained experienced staff are committed to provide results focused therapy with one on one attention, hands on techniques and individualized care plans for each of our patients. We serve several communities including Portsmouth, Dover, Somersworth, Rochester, Barrington, Rollinsford, Durham, Eliot, South Berwick, Berwick and North Berwick.