JOHN MANSOUR DDS
NPI 1275959967
Dentist in New York, NY

NPI Status: Active since March 05, 2014

Contact Information

1 GUSTAVE L LEVY PL
NEW YORK, NY
ZIP 10029
Phone: (212) 241-6500

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  • Individual
  • Male
  • Dentist

About JOHN MANSOUR

This page provides the complete NPI Profile along with additional information for John Mansour, a provider established in New York, New York with a medical specialization in Dentist. The healthcare provider is registered in the NPI registry with number 1275959967 assigned on March 2014. The practitioner's primary taxonomy code is 122300000X with license number 2901020671 (MI). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1275959967
Provider Name
JOHN MANSOUR DDS
Gender
Male
Entity Type
Individual
Location Address
1 GUSTAVE L LEVY PL NEW YORK, NY 10029
Location Phone
(212) 241-6500
Mailing Address
1 GUSTAVE L LEVY PL NEW YORK, NY 10029
Mailing Phone
(212) 241-6500
Is Sole Proprietor?
No
Enumeration Date
03-05-2014
Last Update Date
04-29-2026
Code Navigator

A dentist like John Mansour is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

Location Map

Secondary Locations

  • 14-1447 Upper Ottawa Street
    Hamilton, ON L8W 3

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Dentist

Taxonomy Code
122300000X
Type
Dental Providers
License No.
2901020671
License State
MI
Taxonomy Description
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1275959967, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
5
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
5
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
9
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 9 → 18 → 9 9 → 18 → 9 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 1 + 4 + 5 + 1 + 8 + 5 + 1 + 8 + 9 + 1 + 2 + 24 = 73

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1275959967.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Nurse Practitioner (Adult Health)
1 GUSTAVE L LEVY PL
NEW YORK, NY 10029
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY
NEW YORK, NY 10029
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, ANNENBERG 15-92
NEW YORK, NY 10029
Pathology (Neuropathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL
NEW YORK, NY 10029
Pathology (Dermatopathology)
1 GUSTAVE L LEVY PL, 3-08 ANNENBERG BUILDING
NEW YORK, NY 10029
Pathology (Pediatric Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, ANNENBERG 15-92
NEW YORK, NY 10029
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY,
NEW YORK, NY 10029
Pathology (Cytopathology)
1 GUSTAVE L LEVY PL, ANNENBERG BUILDING ROOM 15-265
NEW YORK, NY 10029
Pathology (Neuropathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
Pathology (Neuropathology)
1 GUSTAVE L LEVY PL, PATHOLOGY
NEW YORK, NY 10029
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL, ANNENBERG BUILDING ROOM 15-30
NEW YORK, NY 10029
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL, ANNENBERG 15-38
NEW YORK, NY 10029
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, ANNENBERG 15-28
NEW YORK, NY 10029
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
1 GUSTAVE L LEVY PL, ANNENBERG B2 RM 206 BOX 1211
NEW YORK, NY 10029
Surgery (Surgical Oncology)
1 GUSTAVE L LEVY PL, BOX 1263
NEW YORK, NY 10029
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, DEPT OF PATHOLOGY
NEW YORK, NY 10029
Anesthesiology
1 GUSTAVE L LEVY PL, ANESTHESIOLOGY - BOX 1010
NEW YORK, NY 10029

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1275959967, enumerated as an "individual" on March 05, 2014.

The provider is located at 1 GUSTAVE L LEVY PL NEW YORK, NY 10029 and the phone number is (212) 241-6500.

Dentist with taxonomy code 122300000X.