Had a pretty harrowing experience when my dad was hospitalized at Vassar Brothers in 2011. Dr Feinstein was the attending. On discussing the treatment with a friend who is the infectious disease expert we discovered a major disparity between the dosage of the medication being administered and the correct standard dosage. The amount being administered was such a small fraction of the normal amount that it was of zero therapeutic value. But when I confirmed it three times with the nurse before calling Dr. Feinstein at his home as I was told to do. Dr. Feinstein reacted with anger that I was calling him at home. Was defensive about the questions I asked and then abruptly changed the medication that my dad was on by directive to the nurse, without the slightest acknowlegement of his error. Because the new medication and dosage were appropriate according to the friend that I checked with, we decided to drop the matter. after that Feinstein refused to continue treating my dad and another doctor named dr sohi took over. My dad had improvements after that, but had spent an entire week in limbo there getting very subpar medical treatment with a subclinical dose of vancomycin on this guy’s watch. When we requested my dads medical records, key facts were changed — apparently in anticipation of litigation. This guy is not to be trusted. I do recommend Dr Sohi who took over after Feinstein refused to continue treating my dad.