SEAN DEVLIN
NPI 1629927140
Counselor - Mental Health in Olympia, WA

NPI Status: Active since January 27, 2026

Contact Information

3773 MARTIN WAY E STE 107
OLYMPIA, WA
ZIP 98506
Phone: (970) 314-5823
Fax: (970) 314-5823

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  • Individual
  • Male
  • Counselor
  • Mental Health

About SEAN DEVLIN

This page provides the complete NPI Profile along with additional information for Sean Devlin, a provider established in Olympia, Washington with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1629927140 assigned on January 2026. The practitioner's primary taxonomy code is 101YM0800X with license number CG70087361 (WA). The provider is registered as an individual and his NPI record was last updated January 2026.

NPI
1629927140
Provider Name
SEAN DEVLIN
Gender
Male
Entity Type
Individual
Location Address
3773 MARTIN WAY E STE 107 OLYMPIA, WA 98506
Location Phone
(970) 314-5823
Location Fax
(970) 314-5823
Mailing Address
3773 MARTIN WAY E STE 107 OLYMPIA, WA 98506
Mailing Phone
(970) 314-5823
Mailing Fax
(970) 314-5823
Is Sole Proprietor?
No
Enumeration Date
01-27-2026
Last Update Date
01-27-2026
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A mental health counselor like Sean Devlin 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 No.
CG70087361
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 1629927140, 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
6
Unchanged
Pos 3
2
Doubled → 4
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
2
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
1
Unchanged
Pos 9
4
Doubled → 8
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 2 → 4 9 → 18 → 9 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 4 + 9 + 1 + 8 + 2 + 1 + 4 + 1 + 8 + 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 1629927140.

Other Providers at the Same Location


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

Counselor (Addiction (Substance Use Disorder))
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506
Case Manager/Care Coordinator
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506
Counselor (Mental Health)
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506
Counselor (Addiction (Substance Use Disorder))
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506
Counselor (Mental Health)
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506
Case Manager/Care Coordinator
3773 MARTIN WAY E STE 107
OLYMPIA, WA 98506

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1629927140, enumerated as an "individual" on January 27, 2026.

The provider is located at 3773 MARTIN WAY E STE 107 OLYMPIA, WA 98506 and the phone number is (970) 314-5823.

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