MR. DAVID ALLEN ANDERSEN CADC-II ,ICADC
NPI 1801255443
Counselor - Addiction (Substance Use Disorder) in Visalia, CA

NPI Status: Active since February 10, 2016

Contact Information

120 W SCHOOL AVE
VISALIA, CA
ZIP 93291
Phone: (559) 625-4100
Fax: (559) 625-1970

Recently Updated NPI Information
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.

Table of Contents

NPI Profile Information
Primary Taxonomy
Insurance Plans Accepted
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Counselor
Addiction (Substance Use Disorder)

About DAVID ANDERSEN

This page provides the complete NPI Profile along with additional information for David Andersen, a provider established in Visalia, California with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1801255443 assigned on February 2016. The practitioner's primary taxonomy code is 101YA0400X with license number A042370916 (CA). The provider is registered as an individual and his NPI record was last updated May 2026.

NPI: 1801255443
Provider Name: MR. DAVID ALLEN ANDERSEN CADC-II ,ICADC
Gender: Male
Entity Type: Individual
Location Address: 120 W SCHOOL AVE VISALIA, CA 93291
Location Phone: (559) 625-4100
Location Fax: (559) 625-1970
Mailing Address: 120 W SCHOOL AVE VISALIA, CA 93291
Mailing Phone: (559) 625-4100
Mailing Fax: (559) 625-1970
Is Sole Proprietor?: Yes
Enumeration Date: 02-10-2016
Last Update Date: 05-31-2026
Code Navigator

A Substance Abuse or Addiction Counselor like David Andersen advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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 Addiction (Substance Use Disorder)
Taxonomy Code: 101YA0400X
Type: Behavioral Health & Social Service Providers
License No.: A042370916
License State: CA

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Medicare

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Medicaid

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier	Type / Code	Identifier State	Identifier Issuer
A042370916	OTHER (01)	CA	SUBSTANCE USE DISORDER COUNSELOR

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 1801255443, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 0

Pos 4

Unchanged

Pos 5

Doubled → 4

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 0 → 0 2 → 4 5 → 10 → 1 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 4 + 5 + 1 + 0 + 4 + 8 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1801255443.