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Dr. Dennis Allendorf Is this you?

About Dr. Dennis Allendorf

Dr. Dennis Allendorf, MD is a Doctor primarily located in New York, NY. He has 47 years of experience. His specialties include Adolescent Medicine and Pediatrics. Dr. Allendorf is affiliated with New York Presbyterian / Westchester, New York Presbyterian HospitalColumbia Presbyterian Center and St Luke's Roosevelt Hospital. He speaks English.

Rating Overview

18 Ratings with 8 Comments

The overall average patient rating of Dr. Dennis Allendorf is Good. Dr. Dennis Allendorf has been rated by 18 patients. From those 18 patients 8 of those left a comment along with their rating. The overall rating for Dr. Dennis Allendorf is 3.4 of 5.0 stars.

Mapbox Map of Dr. Dennis Allendorf

Primary Address

Allendorf & Moise MDs

401 W 118th St
New York, NY 10027
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Dr. Dennis Allendorf has the following 2 specialties

  • Adolescent Medicine

    Adolescent specialists are doctors who have advanced training in the health issues that adolescents face. These physicians deal with issues like the onset of puberty, reproductive health, eating disorders, irregular periods, mood changes, drugs and pressures from home and school. For girls entering adulthood, adolescent specialists can act as both pediatrician and gynecologist, so they only have to see one doctor for all their needs.

  • Pediatrics

    A pediatrician is a doctor who specializes in the regular care of children, as well as the diagnosis and treatment of illness in children. Young patients are often more complicated to treat because they are still growing and developing.
    While pediatricians may sub-specialize in specific therapy areas like oncology, surgery, ophthalmology, and anesthesiology, in general, pediatricians provide services like vaccinations, health exams, and treatment of common ailments and injuries. In addition, pediatricians are trained to handle the complex emotional and behavioral issues faced by children, especially during puberty.
    Pediatricians normally see their patients from birth until the age of 18, although some may agree to treat patients into their early 20s, if requested.

  • Expertise

    7 Expertise

  • Acne
  • Asthma
  • Birth Control
  • Birth Defects or Abnormalities (Congenital Abnormalities)
  • Eating Disorders
  • Sexually Transmitted Diseases
  • Substance Abuse

Board Certifications

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.


Showing 5 of 18

Five Stars

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.

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Full Review Rating Breakdown
One Star

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.

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20 minutes
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Excellent Doctor

Excellent diagostician and clearly dedicated to caring for the community.

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20.0 minutes
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Full Review Rating Breakdown
Worst Drs for emergency

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...

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15.0 minutes
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He's an old-fashioned doctor with an intellectual sense of humor

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.

Wait time
5.0 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
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Full Review Rating Breakdown
  • Hospital Affiliations

    Dr. Allendorf is affiliated (can practice and admit patients) with the following hospital(s).

  • New York Presbyterian / Westchester
  • New York Presbyterian HospitalColumbia Presbyterian Center
  • St Luke's Roosevelt Hospital
  • Nyp-Columbia
  • St Lukes Roosevelt Hospital CenterRoosevelt Hospital Division
  • New York-Presbyterian Hospital / Morgan Stanley Children's Hospital
  • Slrhc
  • NewYork-PresbyterianMorgan Stanley Children`s Hospital
  • NewYork-Presbyterian / Weill Cornell
  • Beth Israel Medical Center - Kings Highway Division
  • New York Presbyterian Hospital / The Allen Pavilion
  • NewYork-Presbyterian/Columbia
  • New York Presbyterian Hospital / Columbia
  • St Lukes Hospital
  • Education

    47 Years Experience

  • New York Medical College

    Graduated in 1970

  • St Lukes Roosevelt Hospital


  • Accepted Insurance

    Dr. Dennis Allendorf accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna Choice POS Open Access
    • Aetna Elect Choice EPO
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna NYC Community Plan
    • Aetna Signature Administrators PPO
  • Humana
    • Humana Choice POS
    • Humana ChoiceCare Network PPO
  • Oxford Health
    • Oxford Freedom
    • Oxford Liberty
  • United Healthcare
    • UHC Choice Plus POS
    • UHC Navigate HMO
    • UHC Navigate POS
    • UHC Options PPO
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Locations & Directions

Allendorf & Moise MDs, 401 W 118th St, New York, NY


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