SARAH L GRABERT NP
NPI 1942750492
Nurse Practitioner in Chicago, IL

NPI Status: Active since October 08, 2016

Contact Information

251 E HURON ST STE 16E
CHICAGO, IL
ZIP 60611
Phone: (312) 695-0665
Fax: (312) 695-6594

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  • Individual
  • Female
  • Nurse Practitioner

About SARAH GRABERT

This page provides the complete NPI Profile along with additional information for Sarah Grabert, a provider established in Chicago, Illinois with a medical specialization in Nurse Practitioner. The healthcare provider is registered in the NPI registry with number 1942750492 assigned on October 2016. The practitioner's primary taxonomy code is 363L00000X with license number 209014688 (IL). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1942750492
Provider Name
SARAH L GRABERT NP
Gender
Female
Entity Type
Individual
Location Address
251 E HURON ST STE 16E CHICAGO, IL 60611
Location Phone
(312) 695-0665
Location Fax
(312) 695-6594
Mailing Address
350 FOX HUNT TRL BARRINGTON, IL 60010
Mailing Phone
(330) 720-9465
Is Sole Proprietor?
Yes
Enumeration Date
10-08-2016
Last Update Date
05-26-2026
Code Navigator

A nurse practitioner (NP) like Sarah Grabert 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

  • 2259 S Western Ave
    Chicago, IL 60608
    (312) 738-3355
  • 1501 Biscayne Blvd
    Miami, FL 33132
    (877) 870-0323

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

Taxonomy Code
363L00000X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
209014688
License State
IL
Taxonomy Description
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

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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 1942750492, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

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
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
5
Unchanged
Pos 7
0
Doubled → 0
Pos 8
4
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
2
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 4 → 8 7 → 14 → 5 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 8 + 2 + 1 + 4 + 5 + 0 + 4 + 1 + 8 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1942750492.

Other Providers at the Same Location


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

Nurse Practitioner
251 E HURON ST STE 16E
CHICAGO, IL 60611

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942750492, enumerated as an "individual" on October 08, 2016.

The provider is located at 251 E HURON ST STE 16E CHICAGO, IL 60611 and the phone number is (312) 695-0665.

Nurse Practitioner with taxonomy code 363L00000X.