Dr. Greenwald has been my periodontist for many years and he performed a tooth implant for me in 2007. He is very friendly, yet professional. Care is taken to keep pain to a minimum.
Unlike may physicians and dentists, Dr. Greenwald actually remembers his patients. My wife was very ill in 2007 and he always asked after her (she is not a patient of his).
I give Dr. Greenwald my highest recommendation.