MRS. ELIZABETH SARAH KROLAK PNP
NPI 1780955203
Nurse Practitioner - Pediatrics in Chicago, IL

NPI Status: Active since January 13, 2012

Contact Information

680 N LAKE SHORE DR STE 1050
CHICAGO, IL
ZIP 60611
Phone: (312) 642-5515

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  • Individual
  • Female
  • Nurse Practitioner
  • Pediatrics

About ELIZABETH KROLAK

This page provides the complete NPI Profile along with additional information for Elizabeth Krolak, a provider established in Chicago, Illinois with a medical specialization in Nurse Practitioner, focusing in pediatrics . The healthcare provider is registered in the NPI registry with number 1780955203 assigned on January 2012. The practitioner's primary taxonomy code is 363LP0200X with license number 209.005372 (IL). The provider is registered as an individual and her NPI record was last updated 4 years ago.

NPI
1780955203
Provider Name
MRS. ELIZABETH SARAH KROLAK PNP
Gender
Female
Entity Type
Individual
Location Address
680 N LAKE SHORE DR STE 1050 CHICAGO, IL 60611
Location Phone
(312) 642-5515
Mailing Address
1924 W BERENICE AVE CHICAGO, IL 60613
Mailing Phone
(773) 339-9065
Is Sole Proprietor?
No
Enumeration Date
01-13-2012
Last Update Date
11-01-2022
Code Navigator

A nurse practitioner (NP) like Elizabeth Krolak is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.

Location Map

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

Nurse Practitioner Pediatrics

Taxonomy Code
363LP0200X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
209.005372
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 1780955203, 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
7
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
5
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
2
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 8 → 16 → 7 9 → 18 → 9 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 6 + 0 + 1 + 8 + 5 + 1 + 0 + 2 + 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 1780955203.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Pediatrics
680 N LAKE SHORE DR STE 1050
CHICAGO, IL 60611
Pediatrics
680 N LAKE SHORE DR STE 1050
CHICAGO, IL 60611
Nurse Practitioner
680 N LAKE SHORE DR STE 1050
CHICAGO, IL 60611

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1780955203, enumerated as an "individual" on January 13, 2012.

The provider is located at 680 N LAKE SHORE DR STE 1050 CHICAGO, IL 60611 and the phone number is (312) 642-5515.

Nurse Practitioner with taxonomy code 363LP0200X and a focus in Pediatrics.