MS. RACHEL LEIGH GREENSPAN LCPC
NPI 1003030958
Counselor - Professional in Chicago, IL

NPI Status: Active since April 12, 2007

Contact Information

1101 W ADAMS ST
CHICAGO, IL
ZIP 60607
Phone: (312) 318-8105
Fax: (312) 666-4656

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  • Individual
  • Female
  • Counselor
  • Professional

About RACHEL GREENSPAN

This page provides the complete NPI Profile along with additional information for Rachel Greenspan, a provider established in Chicago, Illinois with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1003030958 assigned on April 2007. The practitioner's primary taxonomy code is 101YP2500X. The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1003030958
Provider Name
MS. RACHEL LEIGH GREENSPAN LCPC
Gender
Female
Entity Type
Individual
Location Address
1101 W ADAMS ST CHICAGO, IL 60607
Location Phone
(312) 318-8105
Location Fax
(312) 666-4656
Mailing Address
1040 W ADAMS ST #254 CHICAGO, IL 60607
Mailing Phone
(312) 666-4656
Mailing Fax
(312) 666-4656
Is Sole Proprietor?
Yes
Enumeration Date
04-12-2007
Last Update Date
07-08-2007
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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 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 1003030958, we treat the final digit (8) 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 42. The final step is to find the difference between that total and the next multiple of ten (50 - 42 = 8).

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

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 0 + 3 + 0 + 9 + 1 + 0 + 24 = 42

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

The next multiple of ten after 42 is 50. The difference is the calculated check digit.

50 - 42 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1003030958.

Other Providers at the Same Location


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

Psychiatry & Neurology (Psychiatry)
1101 W ADAMS ST, #B
CHICAGO, IL 60607

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003030958, enumerated as an "individual" on April 12, 2007.

The provider is located at 1101 W ADAMS ST CHICAGO, IL 60607 and the phone number is (312) 318-8105.

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