DARNELL GILLIAM
NPI 1578354320
Counselor - Addiction (Substance Use Disorder) in Tacoma, WA

NPI Status: Active since May 13, 2025

Contact Information

3713 PACIFIC AVE STE E
TACOMA, WA
ZIP 98418
Phone: (253) 433-7993
Fax: (253) 540-6886

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  • Individual
  • Male
  • Counselor
  • Addiction (Substance Use Disorder)

About DARNELL GILLIAM

This page provides the complete NPI Profile along with additional information for Darnell Gilliam, a provider established in Tacoma, Washington with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1578354320 assigned on May 2025. The practitioner's primary taxonomy code is 101YA0400X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1578354320
Provider Name
DARNELL GILLIAM
Gender
Male
Entity Type
Individual
Location Address
3713 PACIFIC AVE STE E TACOMA, WA 98418
Location Phone
(253) 433-7993
Location Fax
(253) 540-6886
Mailing Address
3713 PACIFIC AVE STE E TACOMA, WA 98418
Mailing Phone
(253) 433-7993
Mailing Fax
(253) 540-6886
Is Sole Proprietor?
No
Enumeration Date
05-13-2025
Last Update Date
05-13-2025
Code Navigator

A Substance Abuse or Addiction Counselor like Darnell Gilliam advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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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

Counselor Addiction (Substance Use Disorder)

Taxonomy Code
101YA0400X
Type
Behavioral Health & Social Service Providers

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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 1578354320, 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
5
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
8
Unchanged
Pos 5
3
Doubled → 6
Pos 6
5
Unchanged
Pos 7
4
Doubled → 8
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
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 7 → 14 → 5 3 → 6 4 → 8 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 4 + 8 + 6 + 5 + 8 + 3 + 4 + 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 1578354320.

Other Providers at the Same Location


The following 6 providers are registered at the same or a nearby location.

Counselor (Mental Health)
3713 PACIFIC AVE STE E
TACOMA, WA 98418
Counselor (Mental Health)
3713 PACIFIC AVE STE E
TACOMA, WA 98418
Registered Nurse (Psychiatric/Mental Health)
3713 PACIFIC AVE STE E
TACOMA, WA 98418
Peer Specialist
3713 PACIFIC AVE STE E
TACOMA, WA 98418
Peer Specialist
3713 PACIFIC AVE STE E
TACOMA, WA 98418
Peer Specialist
3713 PACIFIC AVE STE E
TACOMA, WA 98418

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1578354320, enumerated as an "individual" on May 13, 2025.

The provider is located at 3713 PACIFIC AVE STE E TACOMA, WA 98418 and the phone number is (253) 433-7993.

Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).