Retina Institute of California Medical Group
NPI 1639562291 · Specialist · Pomona, CA
Retina Institute of California Medical Group is a Specialist organization in Pomona, CA (NPI 1639562291).
Provider details
- NPI number
- 1639562291
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Tom Chang, Founder(626) 568-8838
- License
- A69909 (CA)
Specialties & taxonomies
Other Service 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
11 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
- 2015-03-06
- Last updated
- 2015-03-06
Frequently asked questions
- What is Retina Institute of California Medical Group's NPI number?
- Retina Institute of California Medical Group's National Provider Identifier (NPI) is 1639562291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Retina Institute of California Medical Group?
- Retina Institute of California Medical Group is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Retina Institute of California Medical Group located?
- Retina Institute of California Medical Group's practice location on file with NPPES is 160 E Artesia St, Pomona, CA 91767-2900.
- What is Retina Institute of California Medical Group's phone number?
- The practice phone number listed in the NPPES registry for Retina Institute of California Medical Group is (909) 629-5965.
- Who is the authorized official for Retina Institute of California Medical Group?
- The authorized official listed on Retina Institute of California Medical Group's NPPES record is Tom Chang, Founder. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Retina Institute of California Medical Group's NPI active?
- Yes — Retina Institute of California Medical Group's NPI (1639562291) is active in the NPPES registry as of the last update on 2015-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.