Diana Chen, OD
NPI 1962989863 · Optometrist · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Chen, OD is a Optometrist provider in Walnut Creek, CA (NPI 1962989863).
Provider details
- NPI number
- 1962989863
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 9524TG (TX)
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
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
$524 across 13 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
Additional practice locations (1)
- 4901 Calhoun RdHouston, TX 77204-2020Phone: (713) 743-2020Fax: (713) 743-0963
Registry dates
- Enumerated
- 2018-07-24
- Last updated
- 2020-09-28
- Certified
- 2020-09-28
Frequently asked questions
- What is Diana Chen's NPI number?
- Diana Chen's National Provider Identifier (NPI) is 1962989863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Chen's specialty?
- Diana Chen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Diana Chen located?
- Diana Chen's practice location on file with NPPES is 1855 San Miguel Dr Ste 28, Walnut Creek, CA 94596-5298.
- What is Diana Chen's phone number?
- The practice phone number listed in the NPPES registry for Diana Chen is (925) 935-8820.
- Does Diana Chen accept Medicare?
- Diana Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Chen's NPI active?
- Yes — Diana Chen's NPI (1962989863) is active in the NPPES registry as of the last update on 2020-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.