Jeffrey Duncan, O.D.
NPI 1407846207 · Optometrist · Santa Ana, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Duncan, O.D. is a Optometrist provider in Santa Ana, CA (NPI 1407846207).
Provider details
- NPI number
- 1407846207
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 10884T (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
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
- 2005-10-24
- Last updated
- 2012-07-02
Frequently asked questions
- What is Jeffrey Duncan's NPI number?
- Jeffrey Duncan's National Provider Identifier (NPI) is 1407846207, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Duncan's specialty?
- Jeffrey Duncan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Jeffrey Duncan located?
- Jeffrey Duncan's practice location on file with NPPES is 3620 S Bristol St, Santa Ana, CA 92704-7300.
- What is Jeffrey Duncan's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Duncan is (714) 557-7373.
- Does Jeffrey Duncan accept Medicare?
- Jeffrey Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Duncan's NPI active?
- Yes — Jeffrey Duncan's NPI (1407846207) is active in the NPPES registry as of the last update on 2012-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.