The average patient rating for Dr. Klein is 3.5 stars out of 5. His areas of expertise include the following: basal cell carcinoma, nail fungus, and actinic keratosis. Dr. Klein accepts Coventry, Viant, and Aetna, as well as other insurance carriers. After attending Stony Brook University Medical Center, School of Medicine, Dr. Klein completed his residency training at a hospital affiliated with Stony Brook University Medical Center. He is affiliated with Mount Sinai Hospital.