GREG DE GUZMAN
NPI 1477979953
Licensed Vocational Nurse in Placerville, CA

NPI Status: Active since March 09, 2014

Contact Information

935B SPRING ST
PLACERVILLE, CA
ZIP 95667
Phone: (530) 621-6213
Fax: (530) 622-2385

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

Individual
Male
Licensed Vocational Nurse

About GREG DE GUZMAN

This page provides the complete NPI Profile along with additional information for Greg De Guzman, a provider established in Placerville, California with a medical specialization in Licensed Vocational Nurse. The healthcare provider is registered in the NPI registry with number 1477979953 assigned on March 2014. The practitioner's primary taxonomy code is 164X00000X with license number 276866 (CA). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI: 1477979953
Provider Name: GREG DE GUZMAN
Gender: Male
Entity Type: Individual
Location Address: 935B SPRING ST PLACERVILLE, CA 95667
Location Phone: (530) 621-6213
Location Fax: (530) 622-2385
Mailing Address: 935B SPRING ST PLACERVILLE, CA 95667
Mailing Phone: (530) 621-6213
Mailing Fax: (530) 622-2385
Is Sole Proprietor?: No
Enumeration Date: 03-09-2014
Last Update Date: 03-09-2014
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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.: 276866
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.

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 1477979953, 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 → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 9 → 18 → 9 9 → 18 → 9 5 → 10 → 1

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 + 1 + 8 + 7 + 1 + 8 + 9 + 1 + 0 + 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 1477979953.