DR. JOHN NGUYEN DO
NPI 1326789793
Internal Medicine - Hospice and Palliative Medicine in Los Angeles, CA

NPI Status: Active since April 07, 2022

Contact Information

4733 W SUNSET BLVD FL 3
LOS ANGELES, CA
ZIP 90027
Phone: (323) 783-3699

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

Individual
Male
Internal Medicine
Hospice and Palliative Medicine

About JOHN NGUYEN

This page provides the complete NPI Profile along with additional information for John Nguyen, an internist established in Los Angeles, California with a medical specialization in Internal Medicine, focusing in hospice and palliative medicine . The healthcare provider is registered in the NPI registry with number 1326789793 assigned on April 2022. The practitioner's primary taxonomy code is 207RH0002X with license number 20A21732 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1326789793
Provider Name: DR. JOHN NGUYEN DO
Gender: Male
Entity Type: Individual
Location Address: 4733 W SUNSET BLVD FL 3 LOS ANGELES, CA 90027
Location Phone: (323) 783-3699
Mailing Address: 17234 VALLEY BLVD, BUILDING A FONTANA, CA 92335
Is Sole Proprietor?: No
Enumeration Date: 04-07-2022
Last Update Date: 04-15-2025
Code Navigator

An internist like John Nguyen is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

17234 Valley Blvd, Building A
Fontana, CA 92335
(909) 427-4128

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: Internal Medicine Hospice and Palliative Medicine
Taxonomy Code: 207RH0002X
Type: Allopathic & Osteopathic Physicians
License No.: 20A21732
License State: CA
Taxonomy Description: An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	390200000X	Student, Health Care	Student in an Organized Health Care Education/Training Program

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 1326789793, 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 → 4

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

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 2 → 4 7 → 14 → 5 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 4 + 6 + 1 + 4 + 8 + 1 + 8 + 7 + 1 + 8 + 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 1326789793.