JILLIAN ELIZABETH MACKINNON
NPI 1629912928
Peer Specialist in Lowell, MA

NPI Status: Active since April 16, 2026

Contact Information

77 E MERRIMACK ST
LOWELL, MA
ZIP 01852
Phone: (978) 349-4182
Fax: (978) 704-8230

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  • Individual
  • Female
  • Peer Specialist

About JILLIAN MACKINNON

This page provides the complete NPI Profile along with additional information for Jillian Mackinnon, a provider established in Lowell, Massachusetts with a medical specialization in Peer Specialist. The healthcare provider is registered in the NPI registry with number 1629912928 assigned on April 2026. The practitioner's primary taxonomy code is 175T00000X. The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1629912928
Provider Name
JILLIAN ELIZABETH MACKINNON
Gender
Female
Entity Type
Individual
Location Address
77 E MERRIMACK ST LOWELL, MA 01852
Location Phone
(978) 349-4182
Location Fax
(978) 704-8230
Mailing Address
77 E MERRIMACK ST LOWELL, MA 01852
Mailing Fax
(978) 704-8230
Is Sole Proprietor?
No
Enumeration Date
04-16-2026
Last Update Date
04-16-2026
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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
License State
MA
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 1629912928, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 4 + 9 + 1 + 8 + 1 + 4 + 9 + 4 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1629912928.

Other Providers at the Same Location


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

Psychologist (Clinical)
77 E MERRIMACK ST, 23
LOWELL, MA 01852
Psychologist (Clinical)
77 E MERRIMACK ST
LOWELL, MA 01852
Social Worker (Clinical)
77 E MERRIMACK ST, SUITE 1
LOWELL, MA 01852
Internal Medicine
77 E MERRIMACK ST, SUITE# 14
LOWELL, MA 01852
Psychologist
77 E MERRIMACK ST, #23
LOWELL, MA 01852
Social Worker (Clinical)
77 E MERRIMACK ST, SOUTH BAY MENTAL HEALTH CENTER
LOWELL, MA 01852
Chiropractor
77 E MERRIMACK ST, SUITE 6
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, SOUTH BAY MENTAL HEALTH SUITE 1
LOWELL, MA 01852
Internal Medicine
77 E MERRIMACK ST, SUITE 15
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT 1
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT 1
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, SOUTH BAY MENTAL HEALTH CENTER
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST
LOWELL, MA 01852
Nurse Practitioner (Family)
77 E MERRIMACK ST, SUITE 15
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT 1
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT #1
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT 1
LOWELL, MA 01852
Psychologist
77 E MERRIMACK ST
LOWELL, MA 01852
Social Worker
77 E MERRIMACK ST, SUITE 1
LOWELL, MA 01852
Counselor (Mental Health)
77 E MERRIMACK ST, UNIT 1
LOWELL, MA 01852

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1629912928, enumerated as an "individual" on April 16, 2026.

The provider is located at 77 E MERRIMACK ST LOWELL, MA 01852 and the phone number is (978) 349-4182.

Peer Specialist with taxonomy code 175T00000X.