A Doctor of Medical Science is a professional doctoral degree for physician assistants offered by eight universities in the United States.[1] Holders of this degree are entitled to the post-nominal letters of DMS or DMSc. One institution, the Massachusetts College of Pharmacy and Health Sciences, issues the Doctor of Science in Physician Assistant Studies, an equivalent degree that uses the postnominals of DScPAS.[2] It is also known as a Doctor of Physician Assistant Studies.