LOUIS A PEREZ MD
NPI 1013999010
Radiology - Vascular & Interventional Radiology in Brewster, NY

NPI Status: Active since November 16, 2005

Contact Information

3839 DANBURY RD
BREWSTER, NY
ZIP 10509
Phone: (845) 278-6200
Fax: (845) 278-7802

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  • Individual
  • Male
  • Radiology
  • Vascular & Interventional Radiology

About LOUIS PEREZ

This page provides the complete NPI Profile along with additional information for Louis Perez, a provider established in Brewster, New York with a medical specialization in Radiology, focusing in vascular & interventional radiology . The healthcare provider is registered in the NPI registry with number 1013999010 assigned on November 2005. The practitioner's primary taxonomy code is 2085R0204X with license number 099521 (NY). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1013999010
Provider Name
LOUIS A PEREZ MD
Gender
Male
Entity Type
Individual
Location Address
3839 DANBURY RD BREWSTER, NY 10509
Location Phone
(845) 278-6200
Location Fax
(845) 278-7802
Mailing Address
3839 DANBURY RD BREWSTER, NY 10509
Mailing Phone
(845) 278-6200
Mailing Fax
(845) 278-7802
Is Sole Proprietor?
Yes
Enumeration Date
11-16-2005
Last Update Date
09-11-2025
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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

Radiology Vascular & Interventional Radiology

Taxonomy Code
2085R0204X
Type
Allopathic & Osteopathic Physicians
License No.
099521
License State
NY
Taxonomy Description
A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
12085B0100XAllopathic & Osteopathic Physicians

Radiology
Body Imaging

099521 (NY)
22085N0700XAllopathic & Osteopathic Physicians

Radiology
Neuroradiology

099521 (NY)
32085N0904XAllopathic & Osteopathic Physicians

Radiology
Nuclear Radiology

099521 (NY)
42085P0229XAllopathic & Osteopathic Physicians

Radiology
Pediatric Radiology

099521 (NY)
52085R0202XAllopathic & Osteopathic Physicians

Radiology
Diagnostic Radiology

099521 (NY)
62085U0001XAllopathic & Osteopathic Physicians

Radiology
Diagnostic Ultrasound

099521 (NY)

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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 1013999010, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
0
Unchanged
Pos 3
1
Doubled → 2
Pos 4
3
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
1
Doubled → 2
Check
0
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 1 → 2 9 → 18 → 9 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 2 + 3 + 1 + 8 + 9 + 1 + 8 + 0 + 2 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1013999010.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Radiology (Diagnostic Radiology)
3839 DANBURY RD
BREWSTER, NY 10509
Radiology (Diagnostic Radiology)
3839 DANBURY RD, NORTHEAST RADIOLOGY
BREWSTER, NY 10509
Radiology (Diagnostic Radiology)
3839 DANBURY RD
BREWSTER, NY 10509
Radiology (Neuroradiology)
3839 DANBURY RD, NORTHEAST RADIOLOGY
BREWSTER, NY 10509
Radiology (Diagnostic Radiology)
3839 DANBURY RD
BREWSTER, NY 10509
Radiology (Diagnostic Radiology)
3839 DANBURY RD
BREWSTER, NY 10509
Radiology (Vascular & Interventional Radiology)
3839 DANBURY RD
BREWSTER, NY 10509

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1013999010, enumerated as an "individual" on November 16, 2005.

The provider is located at 3839 DANBURY RD BREWSTER, NY 10509 and the phone number is (845) 278-6200.

Radiology with taxonomy code 2085R0204X and a focus in Vascular & Interventional Radiology.