DANIEL BERTILSON LPC
NPI 1841916442
Counselor - Professional in Saint Louis, MO

NPI Status: Active since October 14, 2022

Contact Information

201 S SKINKER BLVD
SAINT LOUIS, MO
ZIP 63105
Phone: (314) 485-9330
Fax: (949) 404-8756

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

Individual
Male
Counselor
Professional

About DANIEL BERTILSON

This page provides the complete NPI Profile along with additional information for Daniel Bertilson, a provider established in Saint Louis, Missouri with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1841916442 assigned on October 2022. The practitioner's primary taxonomy code is 101YP2500X with license number 2026000784 (MO). The provider is registered as an individual and his NPI record was last updated February 2026.

NPI: 1841916442
Provider Name: DANIEL BERTILSON LPC
Gender: Male
Entity Type: Individual
Location Address: 201 S SKINKER BLVD SAINT LOUIS, MO 63105
Location Phone: (314) 485-9330
Location Fax: (949) 404-8756
Mailing Address: 3530 UTAH ST APT 201 SAINT LOUIS, MO 63118
Is Sole Proprietor?: No
Enumeration Date: 10-14-2022
Last Update Date: 02-12-2026
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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 Professional
Taxonomy Code: 101YP2500X
Type: Behavioral Health & Social Service Providers
License No.: 2026000784
License State: MO

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 1841916442, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

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 4 → 8 9 → 18 → 9 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 8 + 1 + 1 + 8 + 1 + 1 + 2 + 4 + 8 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2

This NPI is valid

The calculated check digit is 2, which matches the last digit of 1841916442.