ALVIN UNDAN
NPI 1346189883
Technician in Rancho Cucamonga, CA

NPI Status: Active since March 27, 2026

Contact Information

7365 CARNELIAN ST STE 112
RANCHO CUCAMONGA, CA
ZIP 91730
Phone: (951) 344-5023
Fax: (951) 346-1281

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

Individual
Male
Technician

About ALVIN UNDAN

This page provides the complete NPI Profile along with additional information for Alvin Undan, a provider established in Rancho Cucamonga, California with a medical specialization in Technician. The healthcare provider is registered in the NPI registry with number 1346189883 assigned on March 2026. The practitioner's primary taxonomy code is 374700000X. The provider is registered as an individual and his NPI record was last updated March 2026.

NPI: 1346189883
Provider Name: ALVIN UNDAN
Gender: Male
Entity Type: Individual
Location Address: 7365 CARNELIAN ST STE 112 RANCHO CUCAMONGA, CA 91730
Location Phone: (951) 344-5023
Location Fax: (951) 346-1281
Mailing Address: 7365 CARNELIAN ST STE 112 RANCHO CUCAMONGA, CA 91730
Mailing Phone: (951) 344-5023
Mailing Fax: (951) 346-1281
Is Sole Proprietor?: No
Enumeration Date: 03-27-2026
Last Update Date: 03-27-2026
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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: Technician
Taxonomy Code: 374700000X
Type: Nursing Service Related Providers
License State: CA
Taxonomy Description: (1) A person with specialized training in a narrow field of expertise whose occupation requires training and is skilled in specific technical processes and procedures. (2) An individual having special skill or practical knowledge in an area, such as operation and maintenance of equipment or performance of laboratory procedures involving biochemical analyses. Special technical qualifications are normally required, though an increasing number or technicians also possess university degrees in science, and occasionally doctorate degrees. The distinction between technician and technologist in the health care field is not always clear.

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 1346189883, 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 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 1 → 2 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 8 + 6 + 2 + 8 + 1 + 8 + 8 + 1 + 6 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1346189883.