Michael Stierstorfer, M.D. is a board-certified dermatologist in North Wales and Philadelphia, Pennsylvania. He is the pioneer of the usefulness of food patch testing for IBS and IBS-like symptoms, and is the founder of East Penn Dermatology, P.C. and the IBS Centers for Advanced Food Allergy Testing, LLC. He specializes in medical, surgical and cosmetic dermatology. Dr. Stierstorfer graduated with honors from Franklin & Marshall College and the Temple University School of Medicine. He completed his Internal Medicine internship and Dermatology residency at the Dartmouth-Hitchcock Medical Cente...