Ying-Ju Chen, O.D.
NPI 1285864462 · Optometrist · El Cajon, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ying-Ju Chen, O.D. is a Optometrist provider in El Cajon, CA (NPI 1285864462).
Provider details
- NPI number
- 1285864462
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- No
- License
- TA2150 (MD)
Specialties & taxonomies
Eye and Vision Services Providers
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 tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-21
- Last updated
- 2018-05-25
Frequently asked questions
- What is Ying-Ju Chen's NPI number?
- Ying-Ju Chen's National Provider Identifier (NPI) is 1285864462, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ying-Ju Chen's specialty?
- Ying-Ju Chen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Ying-Ju Chen located?
- Ying-Ju Chen's practice location on file with NPPES is 605 Fletcher Pkwy, El Cajon, CA 92020-2522.
- What is Ying-Ju Chen's phone number?
- The practice phone number listed in the NPPES registry for Ying-Ju Chen is (619) 590-1994.
- Does Ying-Ju Chen accept Medicare?
- Ying-Ju Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ying-Ju Chen's NPI active?
- Yes — Ying-Ju Chen's NPI (1285864462) is active in the NPPES registry as of the last update on 2018-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.