CHARLES HOLLAND
NPI 1477265890
Driver in San Mateo, CA

NPI Status: Active since December 16, 2022

Contact Information

2000 ALAMEDA DE LAS PULGAS
SAN MATEO, CA
ZIP 94403
Phone: (650) 573-3689

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

Individual
Male
Driver

About CHARLES HOLLAND

This page provides the complete NPI Profile along with additional information for Charles Holland, a provider established in San Mateo, California with a medical specialization in Driver. The healthcare provider is registered in the NPI registry with number 1477265890 assigned on December 2022. The practitioner's primary taxonomy code is 172A00000X with license number R0611362 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI: 1477265890
Provider Name: CHARLES HOLLAND
Gender: Male
Entity Type: Individual
Location Address: 2000 ALAMEDA DE LAS PULGAS SAN MATEO, CA 94403
Location Phone: (650) 573-3689
Mailing Address: 1854 BAY RD EAST PALO ALTO, CA 94303
Mailing Phone: (650) 921-8717
Is Sole Proprietor?: No
Enumeration Date: 12-16-2022
Last Update Date: 12-16-2022
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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: Driver
Taxonomy Code: 172A00000X
Type: Other Service Providers
License No.: R0611362
License State: CA
Taxonomy Description: A person employed to operate a motor vehicle as a carrier of persons or property.

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 1477265890, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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 → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 4

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 7 → 14 → 5 2 → 4 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 + 4 + 1 + 4 + 7 + 4 + 6 + 1 + 0 + 8 + 1 + 8 + 24 = 70

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

The next multiple of ten after 70 is 70. The difference is the calculated check digit.

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1477265890.