See All Oncologists in Mineola, NY
Dr. John Allendorf, MD Icon-share Share Profile
icon-circle-check
Link Copied!
Profile link copied to clipboard!
Super Profile

Dr. John Allendorf, MD

Surgical Oncology*
4.4 (18)
Map Pin Small Mineola, NY
Accepting new patients
27 years of experience

Overview of Dr. John Allendorf, MD

Dr. John Allendorf, MD is a Surgical Oncology Specialist in Mineola, NY. They specialize in Surgical Oncology, has 27 years of experience, and is board certified in General Surgery. They graduated from Columbia University Vagelos College of Physicians and Surgeons and is affiliated with NYU Langone Hospital-Manhattan. Dr. Allendorf, completed a residency at New York Presbyterian Hospital Columbia University Medical Center. Patients rated Dr. Allendorf an average 4.4 star rating.

Dr. Allendorf works at Practice in Mineola, NY with other offices in Patchogue, NY. They frequently treat conditions like Retroperitoneum Cancer and Pancreatic Cancer along with other conditions at varying frequencies. They are accepting new patients and accept Aetna, Blue Cross Blue Shield and Cigna as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

Advertisement
Compare with other Surgical Oncology Specialists
Compare Dr. Allendorf with our nearby Surgical Oncology Specialists at Staten Island University Hospital
These providers are on the medical staff of Staten Island University Hospital.

Dr. Allendorf's Office Locations

  1. 1
    Winthrop Surgery Associates
    120 Mineola Blvd Ste 320, Mineola, NY 11501 Icon Directions Right Arrow Directions Phone Icon (516) 663-3300
  2. 2
    Nyu Langone Bariatric Surgery Associates - Garden City & Patchogue - Patchogue
    157 E Woodside Ave, Patchogue, NY 11772 Icon Directions Right Arrow Directions Phone Icon (631) 475-1900
    Monday
    Closed
    Tuesday
    08:30 - 16:30
    Wednesday
    Closed
    Thursday
    Closed
    Friday
    Closed
    Saturday
    Closed
    Sunday
    Closed

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 Hospital-Manhattan

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.
Thyroidectomy
Retroperitoneum Cancer
Pancreatic 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.
Thyroidectomy
Retroperitoneum Cancer
Pancreatic Cancer
Neuroendocrine Tumors
Parathyroid (Gland) Tumor: Other than Malignant
Parathyroid Cancer
Gallbladder Removal (Cholecystectomy)
Parathyroidectomy
Thyroid Lobectomy
Thyroid Cancer
Liver Biopsy
Lymphadenectomy With Robotic Assistance
Cholangiocarcinoma
Cholecystitis and Gallstones
Constipation
Gallstones
Hyperparathyroidism
Intestinal Obstruction
Liver Cancer
Metastatic Respiratory System Cancer
Parathyroid (Gland) Disease
Partial Lung Collapse
Small Intestine Cancer
Thyroid Nodule
Cholecystectomy with Robotic Assist
Gallbladder Removal
Laparoscopic Gallbladder Removal (Cholecystectomy)
Lymph Node Biopsy or Excision
Port Placements or Replacements
Splenectomy
Splenectomy with Robotic Assist
Abdominal Pain
Adrenal Gland Cancer
Anal and Rectal Cancer
Appendicitis
Ascites
  • View other providers who treat Ascites
Barrett's Esophagus
Biliary Atresia
Biliary Tract Cancer
Bladder Cancer
Bladder Diverticulum
Bone Cancer
Brain Cancer
Breast Cancer
Breast Lump
Carcinoid Syndrome
Colorectal Cancer
Crohn's Disease
Diaphragmatic and Hiatal Hernia
Esophageal Cancer
Fallopian Tube Cancer
Gallbladder and Biliary Tract Cancer
Gallbladder Cancer
Gallbladder Diseases
Gastric Ulcer
Gastroparesis
Gynecologic Cancer
Hypothalamus Cancer
Ileus
  • View other providers who treat Ileus
Incisional Hernia
Inflammatory Bowel Disease
Inguinal Hernia
Intestinal Abscess
Intestinal Diverticulosis
Intestinal Prolapse
Langerhans Cell Histiocytosis
Lipomas
  • View other providers who treat Lipomas
Lung Cancer
Malignant Pituitary Gland Tumor
Median Arcuate Ligament Syndrome (MALS)
Metastatic Breast Cancer
Multiple Endocrine Neoplasia
Myeloid Sarcoma
Neoplasm of Gastrointestinal Tract
Nodular Sclerosis Hodgkins Lymphoma
Non-Hodgkin's Lymphoma
Obstructed Inguinal Hernia
Osteosarcoma
Ovarian Cancer
Pancreas Carcinoma
Pancreatic Disease
Pelvic Abscess
Peptic Ulcer
Peripheral Vascular Disease (PAD, PVD)
Peritoneal Cancer
Pheochromocytoma
Pineal Region Tumors
Pituitary Gland Cancer
Pituitary Tumor
Pleural Effusion
Pyloric Stenosis
Salivary Gland Cancer
Secondary Malignancies
Soft Tissue Sarcoma
Stomach and Small Intestine Cancer
Stomach Cancer
Thymomas
  • View other providers who treat Thymomas
Traumatic Brain Injury
Ulcerative Colitis
Umbilical Hernia
Upper Digestive Tract Cancer
Uterine Cancer
Ventral Hernia
Abdominal Surgery
Adrenalectomy
Adrenalectomy with Robotic Assist
Appendectomy
Arterial Catheterization with Robotic Assist
Axillary Lymph Node Dissection
Bile Duct Procedure
Biliary Drainage
Bone Marrow Biopsy
Colectomy
Colostomy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
Excision of Bile Duct Tumor
Excision of Parotid, Sublingual, or Submandibular Gland
Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
Gallbladder Surgery
Gastrectomy
Gastrectomy with Robotic Assist
Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
Gastrotomy
Hepatectomy
Incision and Removal of Foreign Object
Laparoscopic Appendectomy
Laparoscopic Inguinal Hernia Repair
Laparoscopic Removal of Stones from Biliary Tract
Laparoscopic Surgical Procedure
Laparotomy
Lymphadenectomy with Robotic Assist
Minimally Invasive Surgery
Open Thymectomy
Pancreatectomy (incl. Pancreas Transplant and Whipple Procedure)
Peripheral Artery Catheterization
Revision of Gastric Anastomosis or Restrictive Procedure
Salpingectomy with Robotic Assist
Salpingo Oopherectomy
Soft Tissue Tumor Removal
Thyroid Surgery
Total Salpingectomy With Robotic Assistance
Wedge Resection Stomach
Check your insurance
    Close Icon
    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Blue Cross Blue Shield
    • Capital District Physician's Health Plan (CDPHP)
    • Cigna
    • Connecticare
    • EmblemHealth
    • Empire Blue Cross Blue Shield
    • Excellus BlueCross BlueShield
    • Fidelis Care
    • Healthfirst
    • Highmark Blue Cross Blue Shield
    • Humana
    • MagnaCare
    • MVP Health Care
    • Oxford Health Plans
    • 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

    4.4
    Average provider rating
    Based on 18 ratings
    Patient Ratings (18)
    5 Star
    (14)
    4 Star
    (2)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (2)
    Leave a review

    How was your appointment with Dr. Allendorf?

    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
    • Hpends appropriate amount of time with patients

    Tell Us About Yourself

    • Your gender:
    • Your age group:
    • Number of office visits you've had in the last 2 years:

    Finish Here

    • How would you like to confirm your survey information?
      Standard text messaging and data rates may apply.
    Thank you for sharing your feedback about Dr. John Allendorf, MD.

    About Dr. John Allendorf, MD

    Specialties*
    • Surgical Oncology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 27 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 Hospital Columbia University Medical Center
    Residency
    Internship
    • Columbia Presbyterian Medical Center
    Internship
    Medical Education
    • Columbia University Vagelos College of Physicians and Surgeons
    Medical Education
    Undergraduate School
    • John's Hopkins University
    Undergraduate School
    Board Certifications
    • General Surgery
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

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

    Dr. Allendorf has seen patients for Retroperitoneum Cancer and Pancreatic 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.

    18 patients have reviewed Dr. Allendorf. The overall rating for this provider is 4.4. 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.

    Are you Dr. John Allendorf, MD?

    Claim your profile through Healthgrades to keep it updated and reach more patients.

    It’s free and only takes a minute.

    CLAIM MY PROFILE

    Search

    Primary Care
    Close Icon