PHAP NGUYEN
NPI 1881545291
Pharmacy - Institutional Pharmacy in Visalia, CA

NPI Status: Active since February 04, 2026

Contact Information

400 W MINERAL KING AVE
VISALIA, CA
ZIP 93291
Phone: (559) 624-2000

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

Individual
Male
Pharmacy
Institutional Pharmacy

About PHAP NGUYEN

This page provides the complete NPI Profile along with additional information for Phap Nguyen, a provider established in Visalia, California with a medical specialization in Pharmacy, focusing in institutional pharmacy . The healthcare provider is registered in the NPI registry with number 1881545291 assigned on February 2026. The practitioner's primary taxonomy code is 3336I0012X. The provider is registered as an individual and his NPI record was last updated February 2026.

NPI: 1881545291
Provider Name: PHAP NGUYEN
Gender: Male
Entity Type: Individual
Location Address: 400 W MINERAL KING AVE VISALIA, CA 93291
Location Phone: (559) 624-2000
Mailing Address: 4607 STONEBRIAR CT ANTELOPE, CA 95843
Mailing Phone: (916) 450-0033
Is Sole Proprietor?: Yes
Enumeration Date: 02-04-2026
Last Update Date: 02-04-2026
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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: Pharmacy Institutional Pharmacy
Taxonomy Code: 3336I0012X
Type: Suppliers
Taxonomy Description: A pharmacy in a hospital (inpatient) or institution used by pharmacists for the compounding and delivery of medicinal preparations to be administered to the patient by nursing or other authorized personnel. Institutional Pharmacies also counsel patients and caregivers; administer vaccinations; and provide other professional services associated with pharmaceutical care such as health screenings, consultative services with other health care providers, collaborative practice, disease state management, and education classes.

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 1881545291, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

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 8 → 16 → 7 5 → 10 → 1 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 1 + 0 + 4 + 1 + 0 + 2 + 1 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1881545291.