After seeing three different dermatologists for a rash on my face that kept recurring, I went to see Dr. Feder, who was the first one ever to give me a patch test on my arm, which determined that I am allergic to a bizarre sounding but commonly occurring chemical called cocamidapropyl betaine. Ewwwwgh. It is in nearly every shampoo, many toothpastes, and random other things. You have to read every label or look it up on the EWG website to determine if a product contains it. He had me try three different Rx ointments until one finally worked and my face is rash free. Dr. Feder is SO good, that he is 100% booked and is not taking new patients ATTHISTIME. He takes so much time with his patients, answers all questions in English as opposed to Medicalese. He is also so calm and sweet, he puts his patients at ease immediately. With full disclosure, I must add that Dr. Feder is married to my cousin. I am in no way biased for that reason. I even visited three other dermatologists upon moving back to RI8 years ago, because I didn’t want to have my cousin’s husband examining me :-). However, exasperated with a recurring rash(for which one lovely dermatologist suggested I try covering with a makeup primer!!). I bit the bullet and played the cousin card, because I knew he was THAT good. His nurses examine me in places I am too embarrassed to show a doctor who is married to my cousin! He really is the BEST and has been frequently been listed in RI Monthly’s «BESTOF» for doctors in RI. I hope he will eventually be taking new patients. Ya never know!