He completed his rhinology fellowship at the University of Pennsylvania in 2008. He is currently a member of the Board of Directors for the American Rhinologic Society and serve as a 4-year member of the American Academy of Otolaryngology Rhinology & Paranasal Sinus Committee and Rhinology and Allergy Education Committee. A/Prof Welch also serves as an Associate Editor and Board Member for the International Forum of Allergy & Rhinology Journal.