JUSTIN ALEXANDER REDERER
NPI 1740977834
Emergency Medicine in Chicago, IL

NPI Status: Active since April 19, 2023

Contact Information

7435 W TALCOTT AVE
CHICAGO, IL
ZIP 60631
Phone: (773) 792-7921

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

Individual
Male
Emergency Medicine

About JUSTIN REDERER

This page provides the complete NPI Profile along with additional information for Justin Rederer, a provider established in Chicago, Illinois with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1740977834 assigned on April 2023. The practitioner's primary taxonomy code is 207P00000X with license number 125.084731 (IL). The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI: 1740977834
Provider Name: JUSTIN ALEXANDER REDERER
Gender: Male
Entity Type: Individual
Location Address: 7435 W TALCOTT AVE CHICAGO, IL 60631
Location Phone: (773) 792-7921
Mailing Address: 7435 W TALCOTT AVE CHICAGO, IL 60631
Mailing Phone: (773) 792-7921
Is Sole Proprietor?: No
Enumeration Date: 04-19-2023
Last Update Date: 06-20-2024
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Location Map

Secondary Locations

19555 N 59th Ave
Glendale, AZ 85308
(623) 572-3200

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: Emergency Medicine
Taxonomy Code: 207P00000X
Type: Allopathic & Osteopathic Physicians
License No.: 125.084731
License State: IL
Taxonomy Description: An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

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 1740977834, we treat the final digit (4) 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 6

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 4 → 8 9 → 18 → 9 7 → 14 → 5 3 → 6