MS. BRENNA LYNNE MARCHUK
NPI 1720926108
Counselor - Mental Health in Spokane Valley, WA

NPI Status: Active since March 24, 2026

Contact Information

8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA
ZIP 99212
Phone: (509) 844-5947

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  • Individual
  • Female
  • Counselor
  • Mental Health

About BRENNA MARCHUK

This page provides the complete NPI Profile along with additional information for Brenna Marchuk, a provider established in Spokane Valley, Washington with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1720926108 assigned on March 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated March 2026.

NPI
1720926108
Provider Name
MS. BRENNA LYNNE MARCHUK
Gender
Female
Entity Type
Individual
Location Address
8817 E MISSION AVE STE 106 SPOKANE VALLEY, WA 99212
Location Phone
(509) 844-5947
Mailing Address
8817 E MISSION AVE STE 106 SPOKANE VALLEY, WA 99212
Mailing Phone
(509) 844-5947
Is Sole Proprietor?
No
Enumeration Date
03-24-2026
Last Update Date
03-24-2026
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A mental health counselor like Brenna Marchuk provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License State
WA

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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 1720926108, we treat the final digit (8) 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).

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

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 1 + 8 + 2 + 1 + 2 + 1 + 0 + 24 = 52

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

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1720926108.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Naturopath
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Physiological Laboratory
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Acupuncturist
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Family Medicine
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Community/Behavioral Health
8817 E MISSION AVE STE 106
SPOKANE VLY, WA 99212
Counselor (Mental Health)
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Counselor (Mental Health)
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Behavior Technician
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Marriage & Family Therapist
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212
Counselor
8817 E MISSION AVE STE 106
SPOKANE VALLEY, WA 99212

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720926108, enumerated as an "individual" on March 24, 2026.

The provider is located at 8817 E MISSION AVE STE 106 SPOKANE VALLEY, WA 99212 and the phone number is (509) 844-5947.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.