Chao Sun
NPI 1043669062 · Optometrist · Woodland, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chao Sun is a Optometrist provider in Woodland, CA (NPI 1043669062).
Provider details
- NPI number
- 1043669062
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 8979T (TX)
Specialties & taxonomies
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
10 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
- 2016-06-09
- Last updated
- 2016-07-01
Frequently asked questions
- What is Chao Sun's NPI number?
- Chao Sun's National Provider Identifier (NPI) is 1043669062, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chao Sun's specialty?
- Chao Sun is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Chao Sun located?
- Chao Sun's practice location on file with NPPES is 1836 Mezger Dr, Woodland, CA 95776-5192.
- What is Chao Sun's phone number?
- The practice phone number listed in the NPPES registry for Chao Sun is (857) 526-3947.
- Does Chao Sun accept Medicare?
- Chao Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chao Sun's NPI active?
- Yes — Chao Sun's NPI (1043669062) is active in the NPPES registry as of the last update on 2016-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.