He completed his Doctor of Pharmacy degree at the University of New England followed by a PGY1 and a PGY2 in Infectious Diseases at the University of New Mexico. He is a Board Certified Pharmacotherapy Specialist and AAHIVM-certified HIV Pharmacist. Dr. Dionne has been an active member of ACCP for several years and has been strongly involved in the ID PRN, most recently serving as the Vice Chair of the Awards Committee. He is also active in the Society of Infectious Diseases Pharmacists as a member of the Elections Committee. His recent areas of research include implementation of a post-splenectomy vaccine order set and development of a combination antibiogram to guide empiric treatment of pseudomonal nosocomial pneumonia.