Dr Lefkof is highly professional. He doesn't spend time on speculation or conjecture. Just the facts. He's aggressive in getting those facts, which is good if you're a patient. He treated me for a gastro ailment over the course of 9 months. When it got serious, he was calling me personally from his cell phone on a Sunday to check up on me. I will never forget that. Dr. Lefkof is not necessarily known for being chummy, but in the moment of truth, he's as responsive and caring as any doctor I've ever worked with. If you want scientific, to the point, aggressively seeking information, Dr Lefkof is for you. If you want a new friend and to spend an hour chatting, this is not the clinic or doctor for you. I highly recommend Dr Lefkof.