Incompetent supervision. Does not stand behind his office's work. Feffer is extremely pompous and would not answer patient questions after admitted failed procedure. Staff made mistakes which were not corrected and were ignored by Feffer who apparently is a front man/saleman. After a malpractice by staff and Feffer, Feffer continued to act without concern for welfare of patient and ignored patient's concerns. Also, overcharges by 10x on certain procedures and refused to address billing errors. Apparently uses his staff to write glowing online reviews.