PETER RITZ RD, CSSD
NPI 1114551793
Dietitian, Registered - Nutrition, Sports Dietetics in Evanston, IL

NPI Status: Active since February 24, 2020

Contact Information

2255 CAMPUS DRIVE
EVANSTON, IL
ZIP 60208
Phone: (214) 564-7803

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

Individual
Male
Dietitian, Registered
Nutrition, Sports Dietetics

About PETER RITZ

This page provides the complete NPI Profile along with additional information for Peter Ritz, a provider established in Evanston, Illinois with a medical specialization in Dietitian, Registered, focusing in nutrition, sports dietetics . The healthcare provider is registered in the NPI registry with number 1114551793 assigned on February 2020. The practitioner's primary taxonomy code is 133VN1501X. The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI: 1114551793
Provider Name: PETER RITZ RD, CSSD
Gender: Male
Entity Type: Individual
Location Address: 2255 CAMPUS DRIVE EVANSTON, IL 60208
Location Phone: (214) 564-7803
Mailing Address: 2255 CAMPUS DRIVE EVANSTON, IL 60208
Is Sole Proprietor?: No
Enumeration Date: 02-24-2020
Last Update Date: 02-24-2020
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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: Dietitian, Registered Nutrition, Sports Dietetics
Taxonomy Code: 133VN1501X
Type: Dietary & Nutritional Service Providers
Taxonomy Description: An individual who is a Board Certified Specialist in Sports Dietetics and applies evidence-based nutrition knowledge in exercise and sports. RDNs specializing in sports dietetics assess, educate, and counsel athletes and active individuals. They design, implement, and manage safe and effective nutrition strategies that enhance lifelong health, fitness, and optimal performance.

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 1114551793, 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 2

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 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 1 → 2 5 → 10 → 1 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 1 + 0 + 5 + 2 + 7 + 1 + 8 + 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 1114551793.