MADELINE OHANLON
NPI 1922986686
Counselor - Mental Health in Naperville, IL

NPI Status: Active since August 21, 2025

Contact Information

600 S WASHINGTON ST STE 302
NAPERVILLE, IL
ZIP 60540
Phone: (773) 914-2175

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  • Individual
  • Female
  • Counselor
  • Mental Health

About MADELINE OHANLON

This page provides the complete NPI Profile along with additional information for Madeline Ohanlon, 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 1922986686 assigned on August 2025. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1922986686
Provider Name
MADELINE OHANLON
Gender
Female
Entity Type
Individual
Location Address
600 S WASHINGTON ST STE 302 NAPERVILLE, IL 60540
Location Phone
(773) 914-2175
Mailing Address
711 MILLERSBURG ST OSWEGO, IL 60543
Mailing Phone
(440) 503-5856
Is Sole Proprietor?
No
Enumeration Date
08-21-2025
Last Update Date
08-21-2025
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A mental health counselor like Madeline Ohanlon 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

  • 711 Millersburg St
    Oswego, IL 60543
    (440) 503-5856

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 1922986686, 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 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
9
Unchanged
Pos 3
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
8
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
6
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 2 → 4 9 → 18 → 9 6 → 12 → 3 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 1 + 8 + 8 + 1 + 2 + 6 + 1 + 6 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1922986686.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Counselor (Mental Health)
600 S WASHINGTON ST STE 302
NAPERVILLE, IL 60540
Clinic/Center (Mental Health (Including Community Mental Health Center))
600 S WASHINGTON ST STE 302
NAPERVILLE, IL 60540
Counselor (Mental Health)
600 S WASHINGTON ST STE 302
NAPERVILLE, IL 60540
Counselor (Professional)
600 S WASHINGTON ST STE 302
NAPERVILLE, IL 60540

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922986686, enumerated as an "individual" on August 21, 2025.

The provider is located at 600 S WASHINGTON ST STE 302 NAPERVILLE, IL 60540 and the phone number is (773) 914-2175.

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