JOHNNY HUYGH NGUYEN LVN
NPI 1720976202
Licensed Vocational Nurse in San Francisco, CA

NPI Status: Active since June 25, 2025

Contact Information

625 SECOND STREET SUITE 102
SAN FRANCISCO, CA
ZIP 94107
Phone: (844) 472-5639

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  • Individual
  • Male
  • Licensed Vocational Nurse

About JOHNNY NGUYEN

This page provides the complete NPI Profile along with additional information for Johnny Nguyen, a provider established in San Francisco, California with a medical specialization in Licensed Vocational Nurse. The healthcare provider is registered in the NPI registry with number 1720976202 assigned on June 2025. The practitioner's primary taxonomy code is 164X00000X with license number 737130 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1720976202
Provider Name
JOHNNY HUYGH NGUYEN LVN
Gender
Male
Entity Type
Individual
Location Address
625 SECOND STREET SUITE 102 SAN FRANCISCO, CA 94107
Location Phone
(844) 472-5639
Mailing Address
625 SECOND STREET SUITE 102 SAN FRANCISCO, CA 94107
Mailing Phone
(844) 472-5639
Is Sole Proprietor?
No
Enumeration Date
06-25-2025
Last Update Date
06-25-2025
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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

Licensed Vocational Nurse

Taxonomy Code
164X00000X
Type
Nursing Service Providers
License No.
737130
License State
CA
Taxonomy Description
A licensed vocational nurse with post-high school vocational training and practical experience in the provision of nursing care at a level less than that required for certification as a Registered Nurse. [An alternate term for licensed practical nurse arising from difference in occupational titles between states and post-high school training programs and institutions.] Requirements for education, experience, licensure, and job responsibilities vary among the states.

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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 1720976202, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
2
Doubled → 4
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
7
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
0
Doubled → 0
Check
2
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 9 → 18 → 9 6 → 12 → 3 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 1 + 8 + 7 + 1 + 2 + 2 + 0 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1720976202.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Registered Nurse
625 SECOND STREET SUITE 102
SAN FRANCISCO, CA 94107

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720976202, enumerated as an "individual" on June 25, 2025.

The provider is located at 625 SECOND STREET SUITE 102 SAN FRANCISCO, CA 94107 and the phone number is (844) 472-5639.

Licensed Vocational Nurse with taxonomy code 164X00000X.