Rushed visits. Prefers to talk rather than listen. Arrogant, rude.

Submitted Nov. 12, 2022

He knows his stuff but is very arrogant.. thinks he's the best out there... ok bedside manner but too cockyninnhid personality

Submitted April 13, 2017

THE STAFF ARE REALLY NICE PEOPLE MIDNIGHT BEFORE I HAD TO GO TO MORRISTOWN MEDICAL CENTER FOR EXTREME TMJ PAIN LEFT 6AM FOR PREDNISONE PILL BECAUSE I CANT SLEEP SATURDAY NIGHT THEN I COME IN TO SEE DR OPPENHEIMER WAITING IN THE EXAM ROOM THINKING I MIGHT GO OFF ON THE DOCTOR WHEN HE WAS THE ONE THAT WAS VERY IMPAITENT TOLD ME THAT MY ALLEGIST IS MORE OF A GI EVERYTIME WHEN I TOLD HIM MY MEDICAL HISTORY HE WOULD CUT ME OFF PARANOID TOLD ME I HAVE SEEN YOU FOR 20 MINUTES AS A COURTESY WHICH WASNT TRUE HE ONLY SAW ME FOR 10 MINUTES OR LESS THEN I TOLD HIM CANT YOU PLEASE LET ME TALK DIDNT WORK AND ITS SCARY BECAUSE HE TOLD ME EVEN lactaid milk IS BAD FOR PEOPLE WHO ARE BOARDLINE TO DAIRY WHICH I'M NOT DOCTOR BUT DOESNT MAKE ANY SENSE AND ON TOP OF THAT I HAD RENAL CANCER IN THE LEFT KIDNEY WHICH HE DIDNT CARE I WAS MORE MENTALLY STABLE THEN HIM

Submitted Feb. 27, 2017

Office staff is a nightmare! Dr. Oppenheimer is a competent doctor but he is absolutely not worth the difficulties you will have dealing with the office staff. I saw Dr. Oppenheimer several times in his Cedar Knolls office. He actually told me that working with people in his Hackettstown office was his “penance”. I nearly fell off my chair considering that is where I grew up. Save yourself the aggravation and find another practice.

Submitted Oct. 22, 2013

Waited a ridiculous amount of time to see him.....rude at best.....not helpful....don't waste your time

Submitted Aug. 28, 2013

Once I got used to Dr. Oppenheimer's unique personality, I was hooked! I (and my 3 kids..all patients of his) love Dr. Oppenheimer and would highly recommend him. We deal with food and seasonal allergies and asthma. He's smart, caring, and attentive and always has best interest of patient in mind.

Submitted March 8, 2012

Dr. O was my first experience with an allergist. He is phenomenal! He was very knowledgeable, took the time to explain things and answer all of my questions. He was extremely upbeat and a pleasure to deal with. I was given the impression he is wonderful with children as well (the patient before me was a girl of about 11 yrs old and treated her & her mom appropriately)

Submitted Nov. 4, 2011

Dr Oppenheimer is the best! He is very personable and caring. He is also very dedicated to seeing you get the care you need when others are more interested in your insurance. He is a great doctor and I am so lucky to have him.

Submitted May 24, 2011

Acted like he was serving humanity by coming out to us unwashed hicks in Hackettstown once a month from Morristown. Obnoxious personality. Superiority complex. Does not care about patients.

Submitted Sept. 18, 2009

Very helpful doctor! Took a TON of time explaining everything about my sons asthma to us. Only Doctor out of 3 that managed to get it under control.

Submitted July 15, 2009