Derek Tong, O.D.
NPI 1972574614 · Vision Therapy Optometrist · Pasadena, CA
Derek Tong, O.D. is a Vision Therapy Optometrist provider in Pasadena, CA (NPI 1972574614).
Provider details
- NPI number
- 1972574614
- Entity type
- Individual
- Primary specialty
- Vision Therapy OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 12008T (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
- 2006-01-31
- Last updated
- 2016-09-01
Frequently asked questions
- What is Derek Tong's NPI number?
- Derek Tong's National Provider Identifier (NPI) is 1972574614, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Tong's specialty?
- Derek Tong is listed in the NPPES registry with a primary specialty of Vision Therapy Optometrist (Eye and Vision Services Providers).
- Where is Derek Tong located?
- Derek Tong's practice location on file with NPPES is 2700 E Foothill Blvd, Pasadena, CA 91107-7100.
- What is Derek Tong's phone number?
- The practice phone number listed in the NPPES registry for Derek Tong is (626) 578-9685.
- Is Derek Tong's NPI active?
- Yes — Derek Tong's NPI (1972574614) is active in the NPPES registry as of the last update on 2016-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.