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Dr. John Allendorf, MD

General Surgery
4.5 (17)
Accepting new patients
26 years of experience

Offers telehealth

Overview of Dr. John Allendorf, MD

Dr. John Allendorf, MD is a General Surgery Specialist in Mineola, NY. They specialize in General Surgery, has 26 years of experience. They graduated from Columbia Univ Coll Of Physicians and Surgeons and is affiliated with NYU Langone Health Tisch Hospital.

Dr. Allendorf works at Perlmutter Cancer Center at NYU Langone Long Island Surgical Oncology Associates in Mineola, NY with other offices in Huntington, NY and Patchogue, NY. They frequently treat conditions like Pancreatic Cancer, Port Placements or Replacements and Stomach and Small Intestine Cancer along with other conditions at varying frequencies. They are accepting new patients and accepts Aetna, Blue Cross Blue Shield and CareFirst Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

Super Profile
5/5
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User Ratings (of at least 4.0)
Insurance Accepted
Headshot Available
Accepting New Patients
Conditions Treated and Procedures Performed

Dr. Allendorf's Office Locations

  1. 1
    Sheldon Rudansky MD
    120 Mineola Blvd Ste 320, Mineola, NY 11501 Icon Directions Right Arrow Directions Phone Icon (516) 663-2436
  2. 2
    Perlmutter Cancer Center - Huntington
    789 Park Ave, Huntington, NY 11743 Icon Directions Right Arrow Directions Phone Icon (516) 663-2346
  3. 3
    Patchogue office
    157 E Woodside Ave, Patchogue, NY 11772 Icon Directions Right Arrow Directions Phone Icon (631) 475-1900

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • NYU Langone Health Tisch Hospital

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Pancreatic Cancer
Port Placements or Replacements
Stomach and Small Intestine Cancer
Port Placements or Replacements
Stomach and Small Intestine Cancer

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Pancreatic Cancer Chevron Icon
Port Placements or Replacements Chevron Icon
Stomach and Small Intestine Cancer Chevron Icon
Bile Duct Cancer Chevron Icon
Colorectal Cancer Chevron Icon
Gallbladder and Biliary Tract Cancer Chevron Icon
Liver Cancer Chevron Icon
Neuroendocrine Tumors Chevron Icon
Peritoneal Cancer Chevron Icon
Secondary Malignancies Chevron Icon
Soft Tissue Sarcoma Chevron Icon
Stomach Cancer Chevron Icon
Thyroid Cancer Chevron Icon
Adrenal Gland Cancer Chevron Icon
Anal and Rectal Cancer Chevron Icon
Appendicitis Chevron Icon
Biliary Drainage Chevron Icon
Bladder Cancer Chevron Icon
Bone Cancer Chevron Icon
Breast Cancer Chevron Icon
Cholangiocarcinoma Chevron Icon
Esophageal Cancer Chevron Icon
Fallopian Tube Cancer Chevron Icon
Gallbladder Cancer Chevron Icon
Gallbladder Diseases Chevron Icon
Gynecologic Cancer Chevron Icon
Lung Cancer Chevron Icon
Metastatic Breast Cancer Chevron Icon
Non-Hodgkin's Lymphoma Chevron Icon
Osteosarcoma Chevron Icon
Ovarian Cancer Chevron Icon
Pancreatic Disease Chevron Icon
Pheochromocytoma Chevron Icon
Pituitary Tumor Chevron Icon
Small Intestine Cancer Chevron Icon
Uterine Cancer Chevron Icon
Check your insurance
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    View All Accepted Carriers

    • Aetna
    • Blue Cross Blue Shield
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • EmblemHealth
    • Empire Blue Cross Blue Shield
    • Humana
    • Locals (any local)
    • MagnaCare
    • Medicaid
    • Medicare
    • MultiPlan
    • Oxford Health Plans
    • POMCO Group
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.5
    Average provider rating
    Based on 17 ratings
    Patient Ratings (17)
    5 Star
    (14)
    4 Star
    (1)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (2)
    Leave a review

    How was your appointment with Dr. Allendorf?

    Oct 10, 2022
    I can’t say enough good things about this Dr and his entire staff. Highly recommend
    Theresa G — Oct 10, 2022
    Read more reviews on Healthgrades
    Photo: Dr. John Allendorf, MD
    How would you rate your experience with Dr. John Allendorf, MD?
    • Likelihood of recommending Dr. Allendorf to family and friends

    Dr. Allendorf's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Allendorf

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Spends appropriate amount of time with patients

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    About Dr. John Allendorf, MD

    Specialties
    • General Surgery
    Specialties
    Years of Experience
    • 26 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1740364397
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • Columbia U/Ny Pres Hospital
    Fellowship
    Residency
    • New York Presbyterian Hosp Columbia Univ Medical Ctr
    Residency
    Internship
    • Columbia Presbyterian Medical Center
    Internship
    Medical Education
    • Columbia Univ Coll Of Physicians and Surgeons
    Medical Education
    Undergraduate School
    • John's Hopkins U
    Undergraduate School

    Frequently Asked Questions

    Dr. John Allendorf, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Allendorf is offering online scheduling or call the provider’s office for more information.

    Dr. Allendorf has an average wait time of 10 – 15 minutes at their office(s).

    Dr. Allendorf has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Allendorf has seen patients for Pancreatic Cancer, Port Placements or Replacements and Stomach and Small Intestine Cancer, and more. You can see other conditions treated by Dr. Allendorf on their profile. Please call the provider’s office to confirm all visit reasons.

    17 patients have reviewed Dr. Allendorf. The overall rating for this provider is 4.5. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Allendorf.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Allendorf, there are benefits to both methods. A person calling to schedule an with Dr. Allendorf appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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