Summary

Dr. John Allendorf is an endocrinologist who specializes in diabetes and metabolism, bringing 29 years of clinical experience to his practice. He earned his medical degree from Columbia University College of Physicians & Surgeons, providing him with a strong foundation in medical care. Dr. Allendorf is fluent in both English and Spanish, enabling him to serve a diverse patient population.

Dr. Allendorf practices at NYU Langone Hospital Long Island and sees patients in Mineola, New York. His expertise includes treating complex conditions such as ampullary cancer, appendix tumors, and cholangiocarcinoma. He performs specialized procedures including adrenal surgery, gallbladder surgery, and hyperthermic intraperitoneal chemotherapy. Patients have given him an average rating of 3.9 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.9
  • 29 years of experience
  • 5 insurance plans accepted
  • speaks English, Spanish
  • Columbia University College Of Physicians & Surgeons
  • 12 written reviews
  • 2 specialties
  • 22 areas of expertise
  • 3 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

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Dr. John D. Allendorf, MDDr. Salila Kurra, MDIsabel Reckson, MPHDr. Hyesoo Lowe, MD
Endocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & Metabolism
Accepts New Patients Accepts New Patients
3.9 
4.3 
4.4 
29 Years of Experience 23 Years of Experience 26 Years of Experience
Virtual Visit Available Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English, Spanish Speaks English Speaks Spanish, Korean
Mineola , NYNew York , NYNew York , NYNew York , NY
Med School: Columbia University College Of Physicians & Surgeons Med School: Columbia University College Of Physicians & Surgeons Med School: Weill Cornell Medical College
Current Profile
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Insurance Plans Accepted by Dr. John D. Allendorf

  • Accepts Medicare
  • Aetna HMO
  • Aetna Indemnity
  • Aetna Medicare
  • Local 1199 - NYU Hospital Member Choice
  • Local 1199 PPO

Medical Specialties

Dr. John D. Allendorf has the following 2 specialties

Specialty Expertise

Dr. John D. Allendorf has the following 22 areas of expertise

  • Colectomy
  • Endocrine Disorders
  • Endocrine Gland Cancer
  • Endocrinology & Metabolism
  • Gastrointestinal Cancer
  • Gastrointestinal Surgery
  • Hyperparathyroidism
  • Hyperthyroidism
  • Laparoscopic Gallbladder Surgery (Cholecystectomy)
  • Laproscopic Surgery (Laparoscopy)
  • Liver Diseases
  • Mammary Cancer (Experimental)
  • Neoplasm Seeding
  • Pancreatectomy (Pancreas Removal)
  • Pancreatic Cancer
  • Pancreatic Diseases
  • Pheochromocytoma
  • Skin Cancer (Experimental Melanoma)
  • Surgery
  • Thyroid Cancer
  • Thyroid Diseases
  • Thyroid Nodule

Certifications, License, & Education

29 Years Experience

MEDICAL LICENSE

Medical Doctor, New York, 2026, Expired

EDUCATION & TRAINING

Medical School

Columbia University College Of Physicians & SurgeonsGraduated in 1997

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Frequently Asked Questions

Is Dr. John Allendorf accepting new patients?
Dr. John Allendorf is accepting new patients on Vitals. View Dr. John Allendorf's profile on Vitals to make an appointment.
What languages does Dr. John Allendorf speak?
Dr. John Allendorf speaks English and Spanish.
How can I make an appointment with Dr. John Allendorf?
You can find contact information for Dr. John Allendorf here on Vitals.
Does Dr. John Allendorf accept my insurance?
You can see the insurance plans that Dr. John Allendorf accepts on their Vitals profile.
Which hospitals is Dr. John Allendorf affiliated with?
Dr. John Allendorf is affiliated with Nyu Langone Hospital Long Island.

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