SONYA AVENDANO LCPC
NPI 1558052803
Counselor - Mental Health in Chicago, IL

NPI Status: Active since May 17, 2023

Contact Information

3923 N FRANCISCO AVE
CHICAGO, IL
ZIP 60618
Phone: (773) 759-3349

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  • Individual
  • Female
  • Counselor
  • Mental Health

About SONYA AVENDANO

This page provides the complete NPI Profile along with additional information for Sonya Avendano, a provider established in Chicago, Illinois with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1558052803 assigned on May 2023. The practitioner's primary taxonomy code is 101YM0800X with license number 180017709 (IL). The provider is registered as an individual and her NPI record was last updated January 2026.

NPI
1558052803
Provider Name
SONYA AVENDANO LCPC
Gender
Female
Entity Type
Individual
Location Address
3923 N FRANCISCO AVE CHICAGO, IL 60618
Location Phone
(773) 759-3349
Mailing Address
3923 N FRANCISCO AVE CHICAGO, IL 60618
Mailing Phone
(773) 759-3349
Is Sole Proprietor?
Yes
Enumeration Date
05-17-2023
Last Update Date
01-07-2026
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A mental health counselor like Sonya Avendano 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.

Location Map

Secondary Locations

  • 1700 W Irving Park Rd Ste 301
    Chicago, IL 60613
    (312) 248-2882

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
License No.
180017709
License State
IL

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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 1558052803, 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
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
0
Doubled → 0
Pos 6
5
Unchanged
Pos 7
2
Doubled → 4
Pos 8
8
Unchanged
Pos 9
0
Doubled → 0
Check
3
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 5 → 10 → 1 0 → 0 2 → 4 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 0 + 8 + 0 + 5 + 4 + 8 + 0 + 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 1558052803.

Other Providers at the Same Location


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

Clinic/Center (Mental Health (Including Community Mental Health Center))
3923 N FRANCISCO AVE
CHICAGO, IL 60618

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558052803, enumerated as an "individual" on May 17, 2023.

The provider is located at 3923 N FRANCISCO AVE CHICAGO, IL 60618 and the phone number is (773) 759-3349.

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