STEPHANIE CONTRERAS MA
NPI 1336708445
Counselor - Mental Health in Naperville, IL

NPI Status: Active since June 12, 2019

Contact Information

640 N RIVER RD
NAPERVILLE, IL
ZIP 60563
Phone: (630) 718-0717
Fax: (630) 178-0747

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  • Individual
  • Female
  • Counselor
  • Mental Health

About STEPHANIE CONTRERAS

This page provides the complete NPI Profile along with additional information for Stephanie Contreras, a provider established in Naperville, Illinois with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1336708445 assigned on June 2019. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated March 2026.

NPI
1336708445
Provider Name
STEPHANIE CONTRERAS MA
Gender
Female
Entity Type
Individual
Location Address
640 N RIVER RD NAPERVILLE, IL 60563
Location Phone
(630) 718-0717
Location Fax
(630) 178-0747
Mailing Address
640 N RIVER RD NAPERVILLE, IL 60563
Mailing Phone
(630) 718-0717
Mailing Fax
(630) 178-0747
Is Sole Proprietor?
Yes
Enumeration Date
06-12-2019
Last Update Date
03-12-2026
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A mental health counselor like Stephanie Contreras 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.

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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 Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers

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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 1336708445, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
3
Unchanged
Pos 3
3
Doubled → 6
Pos 4
6
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
0
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
4
Unchanged
Pos 9
4
Doubled → 8
Check
5
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 3 → 6 7 → 14 → 5 8 → 16 → 7 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 6 + 6 + 1 + 4 + 0 + 1 + 6 + 4 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1336708445.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Dentist (General Practice)
640 N RIVER RD, SUITE 100
NAPERVILLE, IL 60563
Chiropractor
640 N RIVER RD, SUITE 114
NAPERVILLE, IL 60563
Social Worker (Clinical)
640 N RIVER RD, SUITE 108
NAPERVILLE, IL 60563
Counselor
640 N RIVER RD, SUITE 108
NAPERVILLE, IL 60563
Counselor (Mental Health)
640 N RIVER RD, STE 108
NAPERVILLE, IL 60563

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1336708445, enumerated as an "individual" on June 12, 2019.

The provider is located at 640 N RIVER RD NAPERVILLE, IL 60563 and the phone number is (630) 718-0717.

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