MS. NANCY SUSAN HASENAUER FNP-BC
NPI 1558008557
Nurse Practitioner - Family in Chicago, IL

NPI Status: Active since May 19, 2022

Contact Information

225 E CHICAGO AVE # 21
CHICAGO, IL
ZIP 60611
Phone: (312) 227-1897

NPI Profile Information
Primary Taxonomy
Secondary Locations
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Nurse Practitioner
Family

About NANCY HASENAUER

This page provides the complete NPI Profile along with additional information for Nancy Hasenauer, a provider established in Chicago, Illinois with a medical specialization in Nurse Practitioner, focusing in family . The healthcare provider is registered in the NPI registry with number 1558008557 assigned on May 2022. The practitioner's primary taxonomy code is 363LF0000X with license number 209.024806 (IL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1558008557
Provider Name: MS. NANCY SUSAN HASENAUER FNP-BC
Gender: Female
Entity Type: Individual
Location Address: 225 E CHICAGO AVE # 21 CHICAGO, IL 60611
Location Phone: (312) 227-1897
Mailing Address: 225 E CHICAGO AVE # 21 CHICAGO, IL 60611
Mailing Phone: (312) 227-4100
Mailing Fax
Is Sole Proprietor?: No
Enumeration Date: 05-19-2022
Last Update Date: 07-22-2025
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A nurse practitioner (NP) like Nancy Hasenauer 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

Secondary Locations

1475 E Belvidere Rd, Pavilion C Suite 285
Grayslake, IL 60030
(312) 227-4100
251 E Huron St
Chicago, IL 60611
(312) 227-4100
250 E Superior St
Chicago, IL 60611
(312) 227-4100
2301 Enterprise Dr
Westchester, IL 60154
(312) 227-4100
3722 Touhy Ave
Skokie, IL 60076
(312) 227-4100
2515 N Clark St Ste 900
Chicago, IL 60614
(312) 227-4100
25 N Winfield Rd
Winfield, IL 60190
(312) 227-4100
5100 W Diversey Ave
Chicago, IL 60639
(312) 227-4100
10350 Haligus Rd Ste 110
Huntley, IL 60142
(312) 227-4100
900 N Westmoreland Rd Ste 110
Lake Forest, IL 60045
(312) 227-4100
1131 Techny Rd
Northbrook, IL 60062
(312) 227-4100
880 W Central Rd Ste 6400
Arlington Heights, IL 60005
(312) 227-4100
1895 Arbor Glen Blvd
Schaumburg, IL 60195
(312) 227-4100
1870 Silver Cross Blvd Ste 210
New Lenox, IL 60451
(312) 227-4100

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 Family
Taxonomy Code: 363LF0000X
Type: Physician Assistants & Advanced Practice Nursing Providers
License No.: 209.024806
License State: IL

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 1558008557, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

Check

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 8 → 16 → 7 5 → 10 → 1

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 + 0 + 1 + 6 + 5 + 1 + 0 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1558008557.