Matthew Chan, OD
NPI 1649347980 · Optometrist · Concord, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Chan, OD is a Optometrist provider in Concord, CA (NPI 1649347980).
Provider details
- NPI number
- 1649347980
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6180T (CA)
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
19 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
- 2006-11-30
- Last updated
- 2022-01-24
- Certified
- 2022-01-24
Frequently asked questions
- What is Matthew Chan's NPI number?
- Matthew Chan's National Provider Identifier (NPI) is 1649347980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Chan's specialty?
- Matthew Chan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Matthew Chan located?
- Matthew Chan's practice location on file with NPPES is 4669 Clayton Rd Ste C, Concord, CA 94521-2964.
- What is Matthew Chan's phone number?
- The practice phone number listed in the NPPES registry for Matthew Chan is (925) 825-3900.
- Does Matthew Chan accept Medicare?
- Matthew Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Chan's NPI active?
- Yes — Matthew Chan's NPI (1649347980) is active in the NPPES registry as of the last update on 2022-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.