JOSEPH SHELDON LEBLANC JR.
NPI 1295291987
Social Worker in Lowell, MA

NPI Status: Active since February 18, 2019

Contact Information

21 GEORGE ST
LOWELL, MA
ZIP 01852
Phone: (978) 459-2306

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  • Individual
  • Male
  • Social Worker

About JOSEPH LEBLANC

This page provides the complete NPI Profile along with additional information for Joseph Leblanc, a provider established in Lowell, Massachusetts with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1295291987 assigned on February 2019. The practitioner's primary taxonomy code is 104100000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1295291987
Provider Name
JOSEPH SHELDON LEBLANC JR.
Gender
Male
Entity Type
Individual
Location Address
21 GEORGE ST LOWELL, MA 01852
Location Phone
(978) 459-2306
Mailing Address
7 BRATTLE DR SHIRLEY, MA 01464
Is Sole Proprietor?
Yes
Enumeration Date
02-18-2019
Last Update Date
05-22-2025
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A social worker like Joseph Leblanc helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
Taxonomy Description
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

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)
1101YM0800XBehavioral Health & Social Service Providers

Counselor
Mental Health

 

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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 1295291987, 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
9
Doubled → 18 → 1 + 8
Pos 4
5
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 9 → 18 → 9 2 → 4 1 → 2 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 8 + 5 + 4 + 9 + 2 + 9 + 1 + 6 + 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 1295291987.

Other Providers at the Same Location


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

Dentist (General Practice)
21 GEORGE ST, SUITE 303
LOWELL, MA 01852
Dentist (General Practice)
21 GEORGE ST, SUITEG04
LOWELL, MA 01852
Dentist (General Practice)
21 GEORGE ST
LOWELL, MA 01852
Acupuncturist
21 GEORGE ST
LOWELL, MA 01852
Dentist (Orthodontics and Dentofacial Orthopedics)
21 GEORGE ST, 2ND FLOOR
LOWELL, MA 01852
Dentist (General Practice)
21 GEORGE ST, SUITE G04
LOWELL, MA 01852
Dentist (Orthodontics and Dentofacial Orthopedics)
21 GEORGE ST
LOWELL, MA 01852
Dentist (General Practice)
21 GEORGE ST, #G5
LOWELL, MA 01852
Internal Medicine
21 GEORGE ST, 1ST FLOOR
LOWELL, MA 01852
Internal Medicine (Addiction Medicine)
21 GEORGE ST, FIRST FLOOR
LOWELL, MA 01852
Dentist
21 GEORGE ST, 201
LOWELL, MA 01852
Counselor (Mental Health)
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Counselor (Mental Health)
21 GEORGE ST
LOWELL, MA 01852
Counselor
21 GEORGE ST
LOWELL, MA 01852
Social Worker (Clinical)
21 GEORGE ST, FIRST FLOOR
LOWELL, MA 01852

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1295291987, enumerated as an "individual" on February 18, 2019.

The provider is located at 21 GEORGE ST LOWELL, MA 01852 and the phone number is (978) 459-2306.

Social Worker with taxonomy code 104100000X.