He attended medical school at SUNY Downstate Medical Center College of Medicine and the University of California, San Francisco (UCSF), School of Medicine. He trained at a hospital affiliated with the University of California, San Francisco (UCSF) for residency. Dr. Greenberg has indicated that his clinical interests include coolsculpting, injectable fillers, and botox injection. Dr. Greenberg's average rating from his patients is 3.5 stars out of 5. He honors Anthem, Blue Cross/Blue Shield, Blue Shield, and more. He is affiliated with John Muir Medical Center, Walnut Creek and John Muir Physician Network.