DR. MARGARET LAURA KIERSTEIN ED.D.
NPI 1134278930
Psychologist - Clinical Child & Adolescent in Northampton, MA

NPI Status: Active since January 09, 2007

Contact Information

16 CENTER ST
SUITE 509
NORTHAMPTON, MA
ZIP 01060
Phone: (413) 584-4935
Fax: (413) 586-6031

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  • Individual
  • Female
  • Psychologist
  • Clinical Child & Adolescent

About MARGARET KIERSTEIN

This page provides the complete NPI Profile along with additional information for Margaret Kierstein, a provider established in Northampton, Massachusetts with a medical specialization in Psychologist, focusing in clinical child & adolescent . The healthcare provider is registered in the NPI registry with number 1134278930 assigned on January 2007. The practitioner's primary taxonomy code is 103TC2200X with license number 4455 (MA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1134278930
Provider Name
DR. MARGARET LAURA KIERSTEIN ED.D.
Gender
Female
Entity Type
Individual
Location Address
16 CENTER ST SUITE 509 NORTHAMPTON, MA 01060
Location Phone
(413) 584-4935
Location Fax
(413) 586-6031
Mailing Address
16 CENTER ST SUITE 509 NORTHAMPTON, MA 01060
Mailing Phone
(413) 584-4935
Mailing Fax
(413) 586-6031
Is Sole Proprietor?
Yes
Enumeration Date
01-09-2007
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

Psychologist Clinical Child & Adolescent

Taxonomy Code
103TC2200X
Type
Behavioral Health & Social Service Providers
License No.
4455
License State
MA
Taxonomy Description
A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

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)
1103TC1900XBehavioral Health & Social Service Providers

Psychologist
Counseling

4455 (MA)
2103TF0000XBehavioral Health & Social Service Providers

Psychologist
Family

4455 (MA)

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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 1134278930, 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 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
1
Unchanged
Pos 3
3
Doubled → 6
Pos 4
4
Unchanged
Pos 5
2
Doubled → 4
Pos 6
7
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
9
Unchanged
Pos 9
3
Doubled → 6
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 3 → 6 2 → 4 8 → 16 → 7 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 6 + 4 + 4 + 7 + 1 + 6 + 9 + 6 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1134278930.

Other Providers at the Same Location


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

Pediatrics
16 CENTER ST, STE 216
NORTHAMPTON, MA 01060
Counselor (Mental Health)
16 CENTER ST, SUITE 403
NORTHAMPTON, MA 01060
Social Worker
16 CENTER ST, RM.312
NORTHAMPTON, MA 01060
Psychiatry & Neurology (Psychiatry)
16 CENTER ST, SUITE 301A
NORTHAMPTON, MA 01060
Social Worker (Clinical)
16 CENTER ST, SUITE 230
NORTHAMPTON, MA 01060
Psychologist (Clinical)
16 CENTER ST, SUITE 429
NORTHAMPTON, MA 01060
Acupuncturist
16 CENTER ST, SUITE 518
NORTHAMPTON, MA 01060
Psychologist
16 CENTER ST, SUITE 327
NORTHAMPTON, MA 01060
Social Worker (Clinical)
16 CENTER ST
NORTHAMPTON, MA 01060
Social Worker
16 CENTER ST, SUITE 223
NORTHHAMPTON, MA 01060
Psychologist
16 CENTER ST, SUITE 226
NORTHAMPTON, MA 01060
Social Worker (Clinical)
16 CENTER ST, SUITE 509
NORTHAMPTON, MA 01060
Psychologist
16 CENTER ST, SUITE 405
NORTHAMPTON, MA 01060
Chiropractor
16 CENTER ST, SUITE 518
NORTHAMPTON, MA 01060
Advanced Practice Midwife
16 CENTER ST, TAPESTRY HEALTH SUITE 415
NORTHAMPTON, MA 01060
Acupuncturist
16 CENTER ST, SUITE 523
NORTHAMPTON, MA 01060
Midwife
16 CENTER ST, SUITE 523
NORTHAMPTON, MA 01060
Psychologist (Clinical)
16 CENTER ST, SUITE 402
NORTHAMPTON, MA 01060
Marriage & Family Therapist
16 CENTER ST, SUITE 410
NORTHAMPTON, MA 01060
Acupuncturist
16 CENTER ST, SUITE 518
NORTHAMPTON, MA 01060

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1134278930, enumerated as an "individual" on January 09, 2007.

The provider is located at 16 CENTER ST SUITE 509 NORTHAMPTON, MA 01060 and the phone number is (413) 584-4935.

Psychologist with taxonomy code 103TC2200X and a focus in Clinical Child & Adolescent.