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

DR. GLADYS VELAZQUEZ MD
NPI 1861479495
Internal Medicine - Infectious Disease in Nanuet, NY

Active since December 23, 2005
55 OLD TURNPIKE RD, STE 503, NANUET, NY 10954(845) 627-2800(845) 627-7827 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
  • Internal Medicine
  • Infectious Disease

About GLADYS VELAZQUEZ

This page provides the complete NPI Profile along with additional information for Gladys Velazquez, an internist established in Nanuet, New York with a medical specialization in Internal Medicine, focusing in infectious disease . The healthcare provider is registered in the NPI registry with number 1861479495 assigned on December 2005. The practitioner's primary taxonomy code is 207RI0200X with license number 147999 (NY). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1861479495
Provider Name
DR. GLADYS VELAZQUEZ MD
Gender
Female
Entity Type
Individual
Location Address
55 OLD TURNPIKE RD STE 503 NANUET, NY 10954
Location Phone
(845) 627-2800
Location Fax
(845) 627-7827
Mailing Address
55 OLD TURNPIKE RD STE 503 NANUET, NY 10954
Mailing Phone
(845) 627-2800
Mailing Fax
(845) 627-7827
Is Sole Proprietor?
No
Enumeration Date
12-23-2005
Last Update Date
07-13-2026
Code Navigator

An internist like Gladys Velazquez is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine Infectious Disease

Taxonomy Code
207RI0200X
Type
Allopathic & Osteopathic Physicians
License No.
147999
License State
NY
Taxonomy Description
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

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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 1861479495, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 2 + 1 + 8 + 7 + 1 + 8 + 4 + 1 + 8 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1861479495.

Other Providers at the Same Location


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

Optometrist
55 OLD TURNPIKE RD, STE 201
NANUET, NY 10954
Optometrist
55 OLD TURNPIKE RD, SUITE 201
NANUET, NY 10954
Dentist
55 OLD TURNPIKE RD, SUITE 501
NANUET, NY 10954
Psychologist
55 OLD TURNPIKE RD, SUITE 601
NANUET, NY 10954
Social Worker (Clinical)
55 OLD TURNPIKE RD, SUITE 206
NANUET, NY 10954
Anesthesiology
55 OLD TURNPIKE RD, SUITE 605
NANUET, NY 10954
Social Worker
55 OLD TURNPIKE RD, SUITE 601
NANUET, NY 10954
Psychologist (Clinical)
55 OLD TURNPIKE RD, SUITE 205
NANUET, NY 10954
Optometrist
55 OLD TURNPIKE RD, SUITE 201
NANUET, NY 10954
Chiropractor
55 OLD TURNPIKE RD, STE 601
NANUET, NY 10954
Podiatrist
55 OLD TURNPIKE RD, SUITE 507
NANUET, NY 10954
Anesthesiology (Pain Medicine)
55 OLD TURNPIKE RD, SUITE 205
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD, SUITE 303
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954
Internal Medicine (Gastroenterology)
55 OLD TURNPIKE RD, SUITE 605
NANUET, NY 10954
Licensed Practical Nurse
55 OLD TURNPIKE RD
NANUET, NY 10954

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861479495, enumerated as an "individual" on December 23, 2005.

The provider is located at 55 OLD TURNPIKE RD STE 503 NANUET, NY 10954 and the phone number is (845) 627-2800.

Internal Medicine with taxonomy code 207RI0200X and a focus in Infectious Disease.