MR. CHALIN KAO PAHN MSW
NPI 1780820936
Social Worker in Seattle, WA

NPI Status: Active since December 17, 2008

Contact Information

3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA
ZIP 98144
Phone: (206) 695-7507
Fax: (206) 596-7606

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  • Individual
  • Male
  • Social Worker

About CHALIN PAHN

This page provides the complete NPI Profile along with additional information for Chalin Pahn, a provider established in Seattle, Washington with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1780820936 assigned on December 2008. The practitioner's primary taxonomy code is 104100000X with license number LW60204437 (WA). The provider is registered as an individual and his NPI record was last updated December 2025.

NPI
1780820936
Provider Name
MR. CHALIN KAO PAHN MSW
Gender
Male
Entity Type
Individual
Location Address
3639 MARTIN LUTHER KING JR WAY S SEATTLE, WA 98144
Location Phone
(206) 695-7507
Location Fax
(206) 596-7606
Mailing Address
3639 MARTIN LUTHER KING JR WAY S SEATTLE, WA 98144
Mailing Phone
(206) 695-7507
Mailing Fax
(206) 596-7606
Is Sole Proprietor?
No
Enumeration Date
12-17-2008
Last Update Date
12-30-2025
Code Navigator

A social worker like Chalin Pahn helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
LW60204437
License State
WA
Taxonomy Description
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

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)
11041C0700XBehavioral Health & Social Service Providers

Social Worker
Clinical

LW60204437 (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 1780820936, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
8
Doubled → 16 → 1 + 6
Pos 4
0
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
2
Unchanged
Pos 7
0
Doubled → 0
Pos 8
9
Unchanged
Pos 9
3
Doubled → 6
Check
6
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 8 → 16 → 7 8 → 16 → 7 0 → 0 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 6 + 0 + 1 + 6 + 2 + 0 + 9 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1780820936.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Psychiatry)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Mental Health)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Community/Behavioral Health
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Health Maintenance Organization
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Mental Health)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Social Worker (Clinical)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Social Worker
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Marriage & Family Therapist
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Social Worker (Clinical)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Social Worker
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Mental Health)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S, SOUTH
SEATTLE, WA 98144
Registered Nurse
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Mental Health)
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Counselor (Addiction (Substance Use Disorder))
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144
Licensed Practical Nurse
3639 MARTIN LUTHER KING JR WAY S
SEATTLE, WA 98144

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1780820936, enumerated as an "individual" on December 17, 2008.

The provider is located at 3639 MARTIN LUTHER KING JR WAY S SEATTLE, WA 98144 and the phone number is (206) 695-7507.

Social Worker with taxonomy code 104100000X.