KEN CHEN OPTOMETRY INC
NPI 1831945302
Clinic/Center in Alameda, CA

NPI Status: Active since April 25, 2024

Contact Information

2202 S SHORE CTR STE F
ALAMEDA, CA
ZIP 94501
Phone: (510) 521-9801

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  • Organization
  • Clinic/Center

About KEN CHEN OPTOMETRY INC

This page provides the complete NPI Profile along with additional information for Ken Chen Optometry Inc, a provider established in Alameda, California operating as a Clinic/center. The healthcare provider is registered in the NPI registry with number 1831945302 assigned on April 2024. The practitioner's primary taxonomy code is 261Q00000X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is Ken Chen O.d. (Ceo)

NPI
1831945302
Provider Name
KEN CHEN OPTOMETRY INC
Entity Type
Organization
Location Address
2202 S SHORE CTR STE F ALAMEDA, CA 94501
Location Phone
(510) 521-9801
Mailing Address
27 COVE RD ALAMEDA, CA 94502
Mailing Phone
(732) 470-0204
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-25-2024
Last Update Date
07-18-2025
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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

Clinic/Center

Taxonomy Code
261Q00000X
Type
Ambulatory Health Care Facilities
Taxonomy Description
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

KEN CHEN O.D.

Authorized Official Title
CEO
Authorized Official Phone
(732) 470-0204

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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 1831945302, 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
8
Unchanged
Pos 3
3
Doubled → 6
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
3
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 3 → 6 9 → 18 → 9 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 1 + 8 + 4 + 1 + 0 + 3 + 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 1831945302.

Other Providers at the Same Location


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

Optometrist
2202 S SHORE CTR STE F
ALAMEDA, CA 94501

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831945302, enumerated as an "organization" on April 25, 2024.

The provider is located at 2202 S SHORE CTR STE F ALAMEDA, CA 94501 and the phone number is (510) 521-9801.

Clinic/Center with taxonomy code 261Q00000X.