EDWIN CHEUK
NPI 1124671235
Technician, Other in San Francisco, CA

NPI Status: Active since July 17, 2019

Contact Information

98 BOSWORTH ST
SAN FRANCISCO, CA
ZIP 94112
Phone: (415) 551-0975

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

Individual
Male
Technician, Other

About EDWIN CHEUK

This page provides the complete NPI Profile along with additional information for Edwin Cheuk, a provider established in San Francisco, California with a medical specialization in Technician, Other. The healthcare provider is registered in the NPI registry with number 1124671235 assigned on July 2019. The practitioner's primary taxonomy code is 247200000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1124671235
Provider Name: EDWIN CHEUK
Gender: Male
Entity Type: Individual
Location Address: 98 BOSWORTH ST SAN FRANCISCO, CA 94112
Location Phone: (415) 551-0975
Mailing Address: 98 BOSWORTH ST SAN FRANCISCO, CA 94112
Is Sole Proprietor?: No
Enumeration Date: 07-17-2019
Last Update Date: 08-27-2025
Code Navigator

Location Map

Secondary Locations

425 Divisadero St Ste 300
San Francisco, CA 94117
(415) 551-0975

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: Technician, Other
Taxonomy Code: 247200000X
Type: Technologists, Technicians & Other Technical Service Providers
Taxonomy Description: A collective term for persons with specialized training in various narrow fields of expertise whose occupations require training and skills in specific technical processes and procedures; and where further classification is deemed unnecessary by the user.

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	174400000X	Other Service Providers	Specialist

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 1124671235, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).

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 → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 6

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 6 → 12 → 3 1 → 2 3 → 6