Dr. Dennis J Allendorf

Dr John D Allendorf is an excellent doctor very knowledgeable and patient . Amazing doctor!!!

Amazing doctor !!

Observant with the development of a child.

Dr. Dennis Allendorf was the finest Doctor anyone could hope for. I was devastated to hear he retired. He will be missed by our family very much. All the Best to him and much thanks for the excellent care he gave to our children.

Please consider another practice. One that values their clients and takes time learn what is most beneficial for you. Dr. Allendorf refused to provide prescriptions to my asthmatic 10 year during peak season! This ensued after I refused to switch from Ventolin, which my child was using intermittently for 2 years, to Flovent. I explained that my son became worst after previously using Flovent due to the soy content (this allergy is listed in my child's chart). His immediate response was "I've NEVER heard of THAT". I politely suggested he look it up. Dr. Allendorf then became both defensive and condescending. Further, he told me I was noncompliant. His ego wouldn't allow him to just listen to his patient and look it up. He sent us on our way without prescriptions for medications that have been previously prescribe by fellow colleagues. Totally negligent! I've since happily gone elsewhere.

Excellent diagostician and clearly dedicated to caring for the community.

I am a Medical PhD at Columbia and I use to hear bad experience with emergency but this is clearly one of them! Dr. Allendorf and Moise are fine for regular visit and vaccine except for their weird sense of humor and the fact that they are not always taking enough time to carefully discuss with you after a visit (they always appear very busy... NY style probably)! But clearly, I won't recommend them in case of an emergency! To make the story short: Our baby (6 month old) had an intestinal obstruction (a pretty common newborn surgical emergencies: asymptomatic, 1 case in 100 newborns and with clinical symptoms is 1 case in 5000 newborns) and they totally missed it... One of the reason is that they are not always listening and in that case this led to a wrong diagnosis when the symptoms of our baby became serious... They diagnosed a viral infection which could have led to very serious consequences on our baby because it delayed the intervention on our son by 3days. Consequences: critical… situation of our baby: dramatic weight loss, dehydration, 24h under perfusion before the intervention in the ER,... Since I was pretty upset, I called them from the hospital to let them know how I felt and then, they never came for a visit at the hospital or even gave a phone call !! Lucky for us, the Pediatric Surgery Clinic at Columbia was amazing and they did a great job and really took care of our baby + they took the time to explain everything to us step by step...

Most people don't seem to get Dr. Allendorf but I am grateful for such an experienced doctor available at short notice. His diagnoses are 100% trustworthy, believe me if there is a problem (like, my newborn was starving and I didn't even know it) he will make darn sure that baby gets taken care of even if the parent is spacing out. He won't let you worry if there's nothing to worry about. He does the shots in about half a second and it's done. He's expert at cleaning ears and taking throat swabs. He's a terrific doctor with a near-fatal flaw - his sense of humor, which is dry, sarcastic, intellectual and which I find quite funny, is a dying breed. An example - he said to my roly-poly baby, "don't they feed you at home?" ha ha, and to my bald baby, "nice haircut!". To me he is just a card trying to build a rapport, but clearly some people don't get this and he should sadly probably just shut up and do his job. Anyone who actually thinks he doesn't really care about the… well-being of his patients is off their rocker. He's an excellent doctor, and I'd go to him long before I'd got to some sweet young well-meaning thing who hasn't seen it all before and doesn't really know what they're doing yet.

Dr. Allendorf was our family pediatrician since the birth of my older sister, and my siblings and I continued to see him through college. He's certainly not warm and fuzzy, but as his patient I never doubted that he cared. He is an excellent diagnostician and while I might not recommend him to a very sensitive parent, he certainly served our family very well for over 25 years.

He is very insulting and makes you