DR. GRETCHEN LEA KAFER PSY.D.
NPI 1144316449
Psychologist - Health Service in Coon Rapids, MN

NPI Status: Active since October 05, 2006

Contact Information

199 COON RAPIDS BLVD NW STE 306
COON RAPIDS, MN
ZIP 55433
Phone: (651) 257-2733
Fax: (651) 257-2783

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Psychologist
Health Service

About GRETCHEN KAFER

This page provides the complete NPI Profile along with additional information for Gretchen Kafer, a provider established in Coon Rapids, Minnesota with a medical specialization in Psychologist, focusing in health service . The healthcare provider is registered in the NPI registry with number 1144316449 assigned on October 2006. The practitioner's primary taxonomy code is 103TH0100X with license number LP4556 (MN). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1144316449
Provider Name: DR. GRETCHEN LEA KAFER PSY.D.
Gender: Female
Entity Type: Individual
Location Address: 199 COON RAPIDS BLVD NW STE 306 COON RAPIDS, MN 55433
Location Phone: (651) 257-2733
Location Fax: (651) 257-2783
Mailing Address: 11802 N MEADOW CURV LINDSTROM, MN 55045
Mailing Phone: (651) 257-5487
Is Sole Proprietor?: No
Enumeration Date: 10-05-2006
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 Health Service
Taxonomy Code: 103TH0100X
Type: Behavioral Health & Social Service Providers
License No.: LP4556
License State: MN
Taxonomy Description: A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

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)
1	103TB0200X	Behavioral Health & Social Service Providers	Psychologist Cognitive & Behavioral	LP4556 (MN)
2	103TC0700X	Behavioral Health & Social Service Providers	Psychologist Clinical	LP4556 (MN)
3	103TC2200X	Behavioral Health & Social Service Providers	Psychologist Clinical Child & Adolescent	LP4556 (MN)

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 1144316449, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 4 → 8 3 → 6 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 6 + 1 + 1 + 2 + 4 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1144316449.