COURTNEY ELLEN HARRIS MD
NPI 1851970545
Pediatrics in Chicago, IL

NPI Status: Active since April 07, 2021

Contact Information

225 E CHICAGO AVE
CHICAGO, IL
ZIP 60611
Phone: (312) 227-4000

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

Individual
Female
Pediatrics

About COURTNEY HARRIS

This page provides the complete NPI Profile along with additional information for Courtney Harris, a pediatrician established in Chicago, Illinois with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1851970545 assigned on April 2021. The practitioner's primary taxonomy code is 208000000X with license number 036.174345 (IL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1851970545
Provider Name: COURTNEY ELLEN HARRIS MD
Gender: Female
Entity Type: Individual
Location Address: 225 E CHICAGO AVE CHICAGO, IL 60611
Location Phone: (312) 227-4000
Mailing Address: 225 E CHICAGO AVE CHICAGO, IL 60611
Mailing Phone: (312) 227-4000
Is Sole Proprietor?: No
Enumeration Date: 04-07-2021
Last Update Date: 03-29-2025
Code Navigator

A pediatrician like Courtney Harris is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.

Location Map

Secondary Locations

3333 Green Bay Rd
North Chicago, IL 60064
(847) 578-3000

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: Pediatrics
Taxonomy Code: 208000000X
Type: Allopathic & Osteopathic Physicians
License No.: 036.174345
License State: IL
Taxonomy Description: A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	390200000X	Student, Health Care	Student in an Organized Health Care Education/Training Program

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 1851970545, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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 → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 8

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 9 → 18 → 9 0 → 0 4 → 8