IndividualActive
Dennis Duncan, O.D.
NPI 1962499251 · Optometrist · Covina, CA
Dennis Duncan, O.D. is a Optometrist provider in Covina, CA (NPI 1962499251).
Provider details
- NPI number
- 1962499251
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- License
- 6902T (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(91/100 index)
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
364 E Rowland St
Covina, CA 91723-3154
Phone: (626) 331-6448
Fax: (626) 967-7006
Street-level locationGet directions
Mailing address
364 E Rowland St
Covina, CA 91723-3154
Registry dates
- Enumerated
- 2005-10-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Dennis Duncan's NPI number?
- Dennis Duncan's National Provider Identifier (NPI) is 1962499251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Duncan's specialty?
- Dennis Duncan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Dennis Duncan located?
- Dennis Duncan's practice location on file with NPPES is 364 E Rowland St, Covina, CA 91723-3154.
- What is Dennis Duncan's phone number?
- The practice phone number listed in the NPPES registry for Dennis Duncan is (626) 331-6448.
- Is Dennis Duncan's NPI active?
- Yes — Dennis Duncan's NPI (1962499251) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.