Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARGUERITE DUBY MD
NPI 1922070267
Pathology - Anatomic Pathology in New York, NY

Active since February 02, 2006
100 E 77TH ST, SUITE 12, NEW YORK, NY 10021(212) 434-2361(212) 434-4512 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Pathology
  • Anatomic Pathology

About MARGUERITE DUBY

This page provides the complete NPI Profile along with additional information for Marguerite Duby, a provider established in New York, New York with a medical specialization in Pathology, focusing in anatomic pathology . The healthcare provider is registered in the NPI registry with number 1922070267 assigned on February 2006. The practitioner's primary taxonomy code is 207ZP0101X with license number 108415 (NY). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1922070267
Provider Name
MARGUERITE DUBY MD
Gender
Female
Entity Type
Individual
Location Address
100 E 77TH ST SUITE 12 NEW YORK, NY 10021
Location Phone
(212) 434-2361
Location Fax
(212) 434-4512
Mailing Address
100 E 77TH ST SUITE 12 NEW YORK, NY 10021
Mailing Phone
(212) 434-2361
Mailing Fax
(212) 434-4512
Is Sole Proprietor?
No
Enumeration Date
02-02-2006
Last Update Date
07-13-2026
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Location Map

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

Pathology Anatomic Pathology

Taxonomy Code
207ZP0101X
Type
Allopathic & Osteopathic Physicians
License No.
108415
License State
NY
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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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 1922070267, 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 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
9
Unchanged
Pos 3
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
0
Doubled → 0
Pos 6
7
Unchanged
Pos 7
0
Doubled → 0
Pos 8
2
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 2 → 4 0 → 0 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 0 + 7 + 0 + 2 + 1 + 2 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1922070267.

Other Providers at the Same Location


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

Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Nurse Anesthetist, Certified Registered
100 E 77TH ST
NEW YORK, NY 10021
Nurse Anesthetist, Certified Registered
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10021

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922070267, enumerated as an "individual" on February 02, 2006.

The provider is located at 100 E 77TH ST SUITE 12 NEW YORK, NY 10021 and the phone number is (212) 434-2361.

Pathology with taxonomy code 207ZP0101X and a focus in Anatomic Pathology.