COLBY AUSTIN-JOHNSON WHITAKER
NPI 1790663359
Social Worker - Clinical in Grand Rapids, MI

NPI Status: Active since August 22, 2025

Contact Information

4829 E BELTLINE AVE NE STE 101
GRAND RAPIDS, MI
ZIP 49525
Phone: (616) 209-8215

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  • Individual
  • Female
  • Social Worker
  • Clinical

About COLBY WHITAKER

This page provides the complete NPI Profile along with additional information for Colby Whitaker, a provider established in Grand Rapids, Michigan with a medical specialization in Social Worker, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1790663359 assigned on August 2025. The practitioner's primary taxonomy code is 1041C0700X with license number 6851120660 (MI). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1790663359
Provider Name
COLBY AUSTIN-JOHNSON WHITAKER
Gender
Female
Entity Type
Individual
Location Address
4829 E BELTLINE AVE NE STE 101 GRAND RAPIDS, MI 49525
Location Phone
(616) 209-8215
Mailing Address
2560 ROSEWATER DR NE UNIT 220 GRAND RAPIDS, MI 49525
Is Sole Proprietor?
Yes
Enumeration Date
08-22-2025
Last Update Date
09-25-2025
Code Navigator

A clinical social worker like Colby Whitaker is licensed to diagnose and treat mental, behavioral, and emotional disorders. A clinical social worker helps patients develop strategies to change behavior or cope with difficult situations and refer patients to other resources or services, such as support groups or other mental health professionals.

Location Map

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 Clinical

Taxonomy Code
1041C0700X
Type
Behavioral Health & Social Service Providers
License No.
6851120660
License State
MI
Taxonomy Description
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

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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 1790663359, 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
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
6
Unchanged
Pos 7
3
Doubled → 6
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 9 → 18 → 9 6 → 12 → 3 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 8 + 0 + 1 + 2 + 6 + 6 + 3 + 1 + 0 + 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 1790663359.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Social Worker (Clinical)
4829 E BELTLINE AVE NE STE 101
GRAND RAPIDS, MI 49525
Social Worker (Clinical)
4829 E BELTLINE AVE NE STE 101
GRAND RAPIDS, MI 49525
Social Worker (Clinical)
4829 E BELTLINE AVE NE STE 101
GRAND RAPIDS, MI 49525
Social Worker
4829 E BELTLINE AVE NE STE 101
GRAND RAPIDS, MI 49525

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790663359, enumerated as an "individual" on August 22, 2025.

The provider is located at 4829 E BELTLINE AVE NE STE 101 GRAND RAPIDS, MI 49525 and the phone number is (616) 209-8215.

Social Worker with taxonomy code 1041C0700X and a focus in Clinical.