MR. DOUGLAS R. FENDER LICSW, RN
NPI 1740418276
Social Worker - Clinical in Spokane, WA

NPI Status: Active since June 23, 2009

Contact Information

705 W 2ND AVE
SPOKANE, WA
ZIP 99201
Phone: (509) 462-2500
Fax: (509) 462-2503

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  • Individual
  • Male
  • Social Worker
  • Clinical

About DOUGLAS FENDER

This page provides the complete NPI Profile along with additional information for Douglas Fender, a provider established in Spokane, Washington with a medical specialization in Social Worker, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1740418276 assigned on June 2009. The practitioner's primary taxonomy code is 1041C0700X with license number LW60278349 (WA). The provider is registered as an individual and his NPI record was last updated February 2026.

NPI
1740418276
Provider Name
MR. DOUGLAS R. FENDER LICSW, RN
Gender
Male
Entity Type
Individual
Location Address
705 W 2ND AVE SPOKANE, WA 99201
Location Phone
(509) 462-2500
Location Fax
(509) 462-2503
Mailing Address
705 W 2ND AVE SPOKANE, WA 99201
Mailing Phone
(509) 462-2500
Mailing Fax
(509) 462-2503
Is Sole Proprietor?
No
Enumeration Date
06-23-2009
Last Update Date
02-09-2026
Code Navigator

A clinical social worker like Douglas Fender is licensed to diagnose and treat mental, behavioral, and emotional disorders. A clinical social worker helps patients develop strategies to change behavior or cope with difficult situations and refer patients to other resources or services, such as support groups or other mental health professionals.

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

Social Worker Clinical

Taxonomy Code
1041C0700X
Type
Behavioral Health & Social Service Providers
License No.
LW60278349
License State
WA
Taxonomy Description
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

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)
1163W00000XNursing Service Providers

Registered Nurse

RN00173898 (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 1740418276, 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
4
Doubled → 8
Pos 4
0
Unchanged
Pos 5
4
Doubled → 8
Pos 6
1
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
2
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
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 4 → 8 4 → 8 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 8 + 0 + 8 + 1 + 1 + 6 + 2 + 1 + 4 + 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 1740418276.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Nurse Practitioner (Psychiatric/Mental Health)
705 W 2ND AVE
SPOKANE, WA 99201

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1740418276, enumerated as an "individual" on June 23, 2009.

The provider is located at 705 W 2ND AVE SPOKANE, WA 99201 and the phone number is (509) 462-2500.

Social Worker with taxonomy code 1041C0700X and a focus in Clinical.