Dr. Zeichner graduated magna cum laude from the University of Pennsylvania and earned his medical degree from the Johns Hopkins University School of Medicine. He completed a Transitional Year Internship at St. Vincent’s Hospital Manhattan before coming to Mount Sinai for his Dermatology residency, during which he served as a Chief Resident. In addition, he completed a Dermatopharmacology Fellowship at Mount Sinai and remains active in the departments's clinical trials. Dr. Zeichner’s special interest is the treatment of acne. He also specializes in aesthetic facial rejuvenation with dermal fillers, botulinum toxin, and lasers.