Cory Preston, OD
NPI 1679533681 · Optometrist · Sunnvyale, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cory Preston, OD is a Optometrist provider in Sunnvyale, CA (NPI 1679533681).
Provider details
- NPI number
- 1679533681
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- OPT11523 (CA)
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 tenure38% of score
20 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
- 2006-03-24
- Last updated
- 2016-09-14
Frequently asked questions
- What is Cory Preston's NPI number?
- Cory Preston's National Provider Identifier (NPI) is 1679533681, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cory Preston's specialty?
- Cory Preston is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Cory Preston located?
- Cory Preston's practice location on file with NPPES is 323 Mathilda Ave, Sunnvyale, CA 94085-4207.
- What is Cory Preston's phone number?
- The practice phone number listed in the NPPES registry for Cory Preston is (408) 524-5900.
- Does Cory Preston accept Medicare?
- Cory Preston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cory Preston's NPI active?
- Yes — Cory Preston's NPI (1679533681) is active in the NPPES registry as of the last update on 2016-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.