LEX GARGAN
NPI 1386573889
Case Manager/Care Coordinator in Keene, NH

NPI Status: Active since May 19, 2026

Contact Information

40 AVON ST
KEENE, NH
ZIP 03431
Phone: (603) 357-4400

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  • Individual
  • Female
  • Case Manager/Care Coordinator

About LEX GARGAN

This page provides the complete NPI Profile along with additional information for Lex Gargan, a provider established in Keene, New Hampshire with a medical specialization in Case Manager/care Coordinator. The healthcare provider is registered in the NPI registry with number 1386573889 assigned on May 2026. The practitioner's primary taxonomy code is 171M00000X. The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1386573889
Provider Name
LEX GARGAN
Gender
Female
Entity Type
Individual
Location Address
40 AVON ST KEENE, NH 03431
Location Phone
(603) 357-4400
Mailing Address
40 AVON ST KEENE, NH 03431
Mailing Phone
(603) 357-4400
Is Sole Proprietor?
No
Enumeration Date
05-19-2026
Last Update Date
05-19-2026
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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

Case Manager/Care Coordinator

Taxonomy Code
171M00000X
Type
Other Service Providers
License State
NH
Taxonomy Description
A person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other services. The person has the ability to provide an assessment and review of completed plan of care on a periodic basis. This person is also able to take collaborative action to coordinate the services with other providers and monitor the enrollee's progress toward the cost-effective achievement of objectives specified in the plan of care. Credentials may vary from an experience in the fields of psychology, social work, rehabilitation, nursing or a closely related human service field, to a related Assoc of Arts Degree or to nursing credentials. Some states may require certification in case management.

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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 1386573889, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
3
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
6
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
7
Unchanged
Pos 7
3
Doubled → 6
Pos 8
8
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
9
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 8 → 16 → 7 5 → 10 → 1 3 → 6 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 6 + 6 + 1 + 0 + 7 + 6 + 8 + 1 + 6 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1386573889.

Other Providers at the Same Location


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

Psychologist (Clinical)
40 AVON ST
KEENE, NH 03431
Psychologist (Clinical)
40 AVON ST
KEENE, NH 03431
Student in an Organized Health Care Education/Training Program
40 AVON ST
KEENE, NH 03431
Student in an Organized Health Care Education/Training Program
40 AVON ST
KEENE, NH 03431
Psychologist
40 AVON ST
KEENE, NH 03431
Psychologist
40 AVON ST
KEENE, NH 03431
Specialist
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Psychologist
40 AVON ST
KEENE, NH 03431
Specialist
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Specialist
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Psychiatry & Neurology (Psychiatry)
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Registered Nurse (Psychiatric/Mental Health)
40 AVON ST
KEENE, NH 03431
Counselor (Mental Health)
40 AVON ST
KEENE, NH 03431
Specialist
40 AVON ST
KEENE, NH 03431

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1386573889, enumerated as an "individual" on May 19, 2026.

The provider is located at 40 AVON ST KEENE, NH 03431 and the phone number is (603) 357-4400.

Case Manager/Care Coordinator with taxonomy code 171M00000X.