Ken Chen
NPI 1346640976 · Optometrist · Alameda, CA
Ken Chen is a Optometrist provider in Alameda, CA (NPI 1346640976).
Provider details
- NPI number
- 1346640976
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 5046 (MA)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$240 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-09-02
- Last updated
- 2024-04-25
- Certified
- 2021-12-26
Frequently asked questions
- What is Ken Chen's NPI number?
- Ken Chen's National Provider Identifier (NPI) is 1346640976, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ken Chen's specialty?
- Ken Chen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Ken Chen located?
- Ken Chen's practice location on file with NPPES is 2202 S Shore Ctr Ste F, Alameda, CA 94501-5788.
- What is Ken Chen's phone number?
- The practice phone number listed in the NPPES registry for Ken Chen is (510) 521-9801.
- Is Ken Chen's NPI active?
- Yes — Ken Chen's NPI (1346640976) is active in the NPPES registry as of the last update on 2024-04-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.