ALEXIS PENNACCHIO PRATT LCPC
NPI 1831486836
Counselor - Professional in Downers Grove, IL

NPI Status: Active since June 29, 2011

Contact Information

943 MAPLE AVE
DOWNERS GROVE, IL
ZIP 60515
Phone: (630) 408-7035

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  • Individual
  • Female
  • Counselor
  • Professional

About ALEXIS PRATT

This page provides the complete NPI Profile along with additional information for Alexis Pratt, a provider established in Downers Grove, Illinois with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1831486836 assigned on June 2011. The practitioner's primary taxonomy code is 101YP2500X with license number 180011996 (IL). The provider is registered as an individual and her NPI record was last updated June 2026.

NPI
1831486836
Provider Name
ALEXIS PENNACCHIO PRATT LCPC
Gender
Female
Entity Type
Individual
Location Address
943 MAPLE AVE DOWNERS GROVE, IL 60515
Location Phone
(630) 408-7035
Mailing Address
943 MAPLE AVE DOWNERS GROVE, IL 60515
Mailing Phone
(630) 408-7035
Is Sole Proprietor?
Yes
Enumeration Date
06-29-2011
Last Update Date
06-22-2026
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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.
180011996
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 1831486836, 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
8
Unchanged
Pos 3
3
Doubled → 6
Pos 4
1
Unchanged
Pos 5
4
Doubled → 8
Pos 6
8
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
3
Doubled → 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 3 → 6 4 → 8 6 → 12 → 3 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 8 + 8 + 1 + 2 + 8 + 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 1831486836.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Community/Behavioral Health
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Counselor (Mental Health)
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Counselor (Mental Health)
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Counselor (Mental Health)
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Social Worker (Clinical)
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Counselor (Mental Health)
943 MAPLE AVE
DOWNERS GROVE, IL 60515
Counselor (Professional)
943 MAPLE AVE
DOWNERS GROVE, IL 60515

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831486836, enumerated as an "individual" on June 29, 2011.

The provider is located at 943 MAPLE AVE DOWNERS GROVE, IL 60515 and the phone number is (630) 408-7035.

Counselor with taxonomy code 101YP2500X and a focus in Professional.