DERRICK JERRY CHEN M.D.
NPI 1255623955
Pathology - Clinical Pathology/Laboratory Medicine in Madison, WI

NPI Status: Active since May 12, 2011

Contact Information

600 HIGHLAND AVE
MADISON, WI
ZIP 53792
Phone: (608) 263-7502

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

Individual
Male
Pathology
Clinical Pathology/Laboratory Medicine

About DERRICK CHEN

This page provides the complete NPI Profile along with additional information for Derrick Chen, a provider established in Madison, Wisconsin with a medical specialization in Pathology, focusing in clinical pathology/laboratory medicine . The healthcare provider is registered in the NPI registry with number 1255623955 assigned on May 2011. The practitioner's primary taxonomy code is 207ZP0105X with license number 65525 (WI). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI: 1255623955
Provider Name: DERRICK JERRY CHEN M.D.
Gender: Male
Entity Type: Individual
Location Address: 600 HIGHLAND AVE MADISON, WI 53792
Location Phone: (608) 263-7502
Mailing Address: 7974 UW HEALTH CT MIDDLETON, WI 53562
Is Sole Proprietor?: No
Enumeration Date: 05-12-2011
Last Update Date: 01-25-2021
Code Navigator

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: Pathology Clinical Pathology/Laboratory Medicine
Taxonomy Code: 207ZP0105X
Type: Allopathic & Osteopathic Physicians
License No.: 65525
License State: WI
Taxonomy Description: A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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 1255623955, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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 → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 6 → 12 → 3 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 1 + 2 + 2 + 6 + 9 + 1 + 0 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1255623955.