CATHERINE KIRBY FLAGG
NPI 1396689725
Counselor - Mental Health in Spokane Valley, WA

NPI Status: Active since April 16, 2026

Contact Information

10305 E MONTGOMERY DR
SPOKANE VALLEY, WA
ZIP 99206
Phone: (509) 873-4072

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  • Individual
  • Female
  • Counselor
  • Mental Health

About CATHERINE FLAGG

This page provides the complete NPI Profile along with additional information for Catherine Flagg, 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 1396689725 assigned on April 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1396689725
Provider Name
CATHERINE KIRBY FLAGG
Gender
Female
Entity Type
Individual
Location Address
10305 E MONTGOMERY DR SPOKANE VALLEY, WA 99206
Location Phone
(509) 873-4072
Mailing Address
15106 N CHRONICLE RD MEAD, WA 99021
Is Sole Proprietor?
No
Enumeration Date
04-16-2026
Last Update Date
04-16-2026
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A mental health counselor like Catherine Flagg 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.

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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 Mental Health

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

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)
1101YA0400XBehavioral Health & Social Service Providers

Counselor
Addiction (Substance Use Disorder)

CDP.CP.70105999 (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 1396689725, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 8 + 6 + 1 + 2 + 8 + 1 + 8 + 7 + 4 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1396689725.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Counselor (Addiction (Substance Use Disorder))
10305 E MONTGOMERY DR
SPOKANE VALLEY, WA 99206
Psychiatry & Neurology (Addiction Psychiatry)
10305 E MONTGOMERY DR
SPOKANE VALLEY, WA 99206
Counselor (Addiction (Substance Use Disorder))
10305 E MONTGOMERY DR
SPOKANE VALLEY, WA 99206
Nurse Practitioner (Psychiatric/Mental Health)
10305 E MONTGOMERY DR
SPOKANE VALLEY, WA 99206
Substance Abuse Rehabilitation Facility
10305 E MONTGOMERY DR
SPOKANE VALLEY, WA 99206

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1396689725, enumerated as an "individual" on April 16, 2026.

The provider is located at 10305 E MONTGOMERY DR SPOKANE VALLEY, WA 99206 and the phone number is (509) 873-4072.

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