JOHN D. ALLENDORF M.D. – NPI #1740364397
Surgery

A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

Health Care Provider Taxonomy Code for Surgery

JOHN ALLENDORF is a surgeon located in MINEOLA, NY. NPPES has assigned the NPI number 1740364397 to JOHN ALLENDORF on October 24, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 2086X0206X from the Health Care Provider Taxonomy code set, which is classified as Surgery, specializing in Surgical Oncology

The NPI profile was last updated on May 13, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN ALLENDORF below.

NPI Profile for
JOHN D. ALLENDORF

NPI Number
1740364397
Enumeration Date

(more than 19 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
JOHN D. ALLENDORF
Credentials
M.D.
Primary location
120 MINEOLA BLVD
SUITE 320
MINEOLA, NY 11501-4064
Phone: (516) 663-3300 Fax: (516) 663-2136
Mailing address
Same as primary location
Sole Proprietor
Yes
Updated
Certification Date
May 13, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Identifiers

Identifiers for JOHN ALLENDORF

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
medicaidNY02288659
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
2086X0206X
- Surgery / Surgical Oncology (Primary)		 NY 212487
208600000X
- Surgery		 NY 212487

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Endpoint

Health Information Exchange (HEI)

HEI is the mobilization of health care information electronically across organizations within a region, community or hospital system. Endpoints provide a simple and secure way for participants to send authenticated, encrypted health information directly to known, trusted recipients over the internet such as primary care physicians, specialists, hospitals, labs, etc.

View All Endpoint(s)
Endpoint
https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service
Endpoint type
CONNECT URL
Endpoint Description
2.16.840.1.113883.3.2019.3
Content Type
Affiliation
Y
Endpoint Location
1300 SE CARDINAL CT STE 190,
VANCOUVER, WA 77025-1669
Endpoint
[email protected]
Endpoint type
Direct Messaging Address
Endpoint Description
Content Type
Affiliation
N
Endpoint Location
120 MINEOLA BLVD,
MINEOLA, NY 77025-1669

Additional Information

Education
COLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS - Graduated 1997
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
JOHN ALLENDORF is affiliated with the following medical group(s):
  • HOSPITAL
    • NYU LANGONE HOSPITALS
      550 FIRST AVENUE
      NEW YORK, NY 10016
  • HOME HEALTH AGENCY
    • NYU LANGONE HEALTH HOME CARE
      290 OLD COUNTRY ROAD
      MINEOLA, NY 11501

Why is my NPI data (personal information) being displayed publicly?
If you have an active NPI profile, your profile is required to be disclosed according to the FOIA and eFOIA. HIPAA also requires covered providers to share their NPI with other providers, health plans, clearinghouses and any entity that may need it for billing purposes.

How do I correct or change the NPI data displayed here?
At any time, providers can make changes to their NPI profile at NPPES. Login to NPPES to make changes online or call (800) 465-3203 for assistance. Changes made at NPPES will be reflected on this web site within a few days.

Can I hide my NPI profile from the public?
Unfortunately, No. The NPPES discloses health care provider data under the Freedom of Information Act to the public, which means anyone may request such information directly from the National Plan & Provider Enumeration System. See the complete CMS Data Dissemination Notice here.