Googling for "Hank Gardstein MD" finds only a Henry (for which Hank is a nickname) Gardstein (http://www.healthgrades.com/physician/dr-henry-gardstein-xcs...) with the same school of medicine, medical specialty, and rough date of beginning of practice as that of the profile on MetaMed.
That doctor was disbarred (http://w3.health.state.ny.us/opmc/factions.nsf/cd901a6816701...) for writing online pharmacy prescriptions.
Same guy?