simon2579/iStock By SASHA PEZENIK, ABC News (NEW YORK) — Direct and immediate access to their doctor is part of what Dr. Abe Malkin’s patients pay for. Concierge practices like his tout first class, round-the-clock medical care. Malkin rarely silences his cellphone, so as not to miss anything, or anyone. But since the COVID-19 vaccine made its U.S. debut, Malkin says his entire team has been “bombarded” by calls asking when they can get it, or if their names might be bumped up to the priority lists. Some simply ask whether it’s possible — others ask if there’s a purchase price.