- Dr. Greenbaum is exceptional!! He regularly treats gymnasts which was a big plus for me since I wanted a surgeon who was knowledgeable about what gymnasts' shoulders go through on a daily basis, and what they need to be able to do after surgery. He definitely spent a lot of time with me, diagnosing my problem, explaining the surgery, answering questions, etc. He was very caring before and after my surgeries, and encouraging and supportive during my rehab. He even let me try a handstand in his office when I was far enough along in my rehab! Excellent surgeon who knows his stuff and is honest and compassionate. I have recommended him to everyone from family and friends to former Olympians. Dr. Greenbaum is the best!