DR. JAMES RICHARD CZAPEK I PHARM.D.
NPI 1336511039
Pharmacy in Byron Center, MI

Q: What is the provider's specialty?

The provider's specialty is Pharmacy with taxonomy code 333600000X.

NPI Status: Active since October 21, 2015

Contact Information

701 68TH ST SW
BYRON CENTER, MI
ZIP 49315
Phone: (616) 281-8212

NPPES record last updated: October 21, 2015. Verified against the NPPES registry weekly; last sync: July 12, 2026.

Table of Contents

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

Individual
Male
Pharmacy

About JAMES CZAPEK

This page provides the complete NPI Profile along with additional information for James Czapek, a provider established in Byron Center, Michigan with a medical specialization in Pharmacy. The healthcare provider is registered in the NPI registry with number 1336511039 assigned on October 2015. The practitioner's primary taxonomy code is 333600000X. The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI: 1336511039
Provider Name: DR. JAMES RICHARD CZAPEK I PHARM.D.
Gender: Male
Entity Type: Individual
Location Address: 701 68TH ST SW BYRON CENTER, MI 49315
Location Phone: (616) 281-8212
Mailing Address: 4687 FOREST VALE RD PIERSON, MI 49339
Mailing Phone: (231) 631-3483
Is Sole Proprietor?: Yes
Enumeration Date: 10-21-2015
Last Update Date: 10-21-2015
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Location Map

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: Pharmacy
Taxonomy Code: 333600000X
Type: Suppliers
Taxonomy Description: A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative services. A pharmacy is a facility whose primary function is to store, prepare and legally dispense prescription drugs under the professional supervision of a licensed pharmacist. It meets any licensing or certification standards set forth by the jurisdiction where it is located.

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 1336511039, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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 → 6

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

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 3 → 6 5 → 10 → 1 1 → 2 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 6 + 6 + 1 + 0 + 1 + 2 + 0 + 6 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1336511039.