MR. DENNIS JOSEPH FRENCH JR.
NPI 1497541536
Peer Specialist in Mastic, NY

NPI Status: Active since April 16, 2025

Contact Information

1235 MONTAUK HWY
MASTIC, NY
ZIP 11950
Phone: (631) 345-0083

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  • Individual
  • Male
  • Peer Specialist

About DENNIS FRENCH

This page provides the complete NPI Profile along with additional information for Dennis French, a provider established in Mastic, New York with a medical specialization in Peer Specialist. The healthcare provider is registered in the NPI registry with number 1497541536 assigned on April 2025. The practitioner's primary taxonomy code is 175T00000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1497541536
Provider Name
MR. DENNIS JOSEPH FRENCH JR.
Gender
Male
Entity Type
Individual
Location Address
1235 MONTAUK HWY MASTIC, NY 11950
Location Phone
(631) 345-0083
Mailing Address
22 SHINNECOCK LN HAMPTON BAYS, NY 11946
Mailing Phone
(631) 566-0199
Is Sole Proprietor?
Yes
Enumeration Date
04-16-2025
Last Update Date
04-16-2025
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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

Peer Specialist

Taxonomy Code
175T00000X
Type
Other Service Providers
Taxonomy Description
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority.

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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 1497541536, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
4
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
7
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
4
Unchanged
Pos 7
1
Doubled → 2
Pos 8
5
Unchanged
Pos 9
3
Doubled → 6
Check
6
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 9 → 18 → 9 5 → 10 → 1 1 → 2 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 8 + 7 + 1 + 0 + 4 + 2 + 5 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1497541536.

Other Providers at the Same Location


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

Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Community/Behavioral Health
1235 MONTAUK HWY, SECOND FLOOR
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Counselor (Addiction (Substance Use Disorder))
1235 MONTAUK HWY
MASTIC, NY 11950
Registered Nurse
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker (Clinical)
1235 MONTAUK HWY
MASTIC, NY 11950
Counselor (Mental Health)
1235 MONTAUK HWY
MASTIC, NY 11950
Counselor (Addiction (Substance Use Disorder))
1235 MONTAUK HWY
MASTIC, NY 11950
Counselor (Addiction (Substance Use Disorder))
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker (Clinical)
1235 MONTAUK HWY
MASTIC, NY 11950
Peer Specialist
1235 MONTAUK HWY
MASTIC, NY 11950
Student in an Organized Health Care Education/Training Program
1235 MONTAUK HWY
MASTIC, NY 11950
Student in an Organized Health Care Education/Training Program
1235 MONTAUK HWY
MASTIC, NY 11950
Social Worker
1235 MONTAUK HWY
MASTIC, NY 11950
Student in an Organized Health Care Education/Training Program
1235 MONTAUK HWY
MASTIC, NY 11950
Counselor (Mental Health)
1235 MONTAUK HWY
MASTIC, NY 11950

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1497541536, enumerated as an "individual" on April 16, 2025.

The provider is located at 1235 MONTAUK HWY MASTIC, NY 11950 and the phone number is (631) 345-0083.

Peer Specialist with taxonomy code 175T00000X.