Leonard Vinnick is hands down the worst doctor I have ever consulted. DONOT go to him for your endocrine issues — or any issue, for that matter! First, this so-called«doctor» charged me $ 300 to sit in a room with him for 10 minutes. I had come in to discuss issues with my thyroid/hair, and he prescribed me Rogaine. Yes, Rogaine. I didn’t need to pay a supposedly qualified specialist $ 300 to tell me the same information I could’ve received from the bartender at the joint across the street(and at least I would’ve gotten my money’s worth of something over there!). But what really upset me was Dr. Vinnick’s patronizing attitude during the whole visit. He is the kind of arrogant, self-righteous doctor that gives doctors a bad and untrustworthy reputation. If you have endocrine issues, I highly recommend that you see someone else! And whatever you do, inquire how much a specialist consultation costs before you go in, so you know exactly what you’re getting into and don’t get stuck with an unexpectedly insane bill.