About Sarah Cheriyan, MD. Sarah Cheriyan, MD is an allergist & immunologist who practices at Professional Association located at 206 Gaslight Blvd in Lufkin, TX 75904 (Angelina County). Dr. Sarah Cheriyan has 15+ years of experience in allergy & immunology. Education. Sarah Cheriyan, MD earned a degree of a Doctor of Medicine. Licenses and ....