Kuei-Yu Chang O.D. Inc., a Professional Corporation
NPI 1861048506 · Optometrist · Irvine, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kuei-Yu Chang O.D. Inc., a Professional Corporation is a Optometrist organization in Irvine, CA (NPI 1861048506).
Provider details
- NPI number
- 1861048506
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Khiem Nguyen-Trong, Operations Manager(818) 793-9666
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
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Other names (DBA / former)
- Doing business as
- Iris Bright Optometry
- Doing business as
- Iris Bright Optometry
Additional practice locations (1)
- 539 Parkway PlzEl Cajon, CA 92020-2532Phone: (619) 447-8494Fax: (619) 441-0143
Registry dates
- Enumerated
- 2019-08-16
- Last updated
- 2024-10-05
- Certified
- 2024-10-05
Frequently asked questions
- What is Kuei-Yu Chang O.D. Inc., a Professional Corporation's NPI number?
- Kuei-Yu Chang O.D. Inc., a Professional Corporation's National Provider Identifier (NPI) is 1861048506, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Kuei-Yu Chang O.D. Inc., a Professional Corporation?
- Kuei-Yu Chang O.D. Inc., a Professional Corporation is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Kuei-Yu Chang O.D. Inc., a Professional Corporation located?
- Kuei-Yu Chang O.D. Inc., a Professional Corporation's practice location on file with NPPES is 8519 Irvine Center Dr, Irvine, CA 92618-4298.
- What is Kuei-Yu Chang O.D. Inc., a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Kuei-Yu Chang O.D. Inc., a Professional Corporation is (949) 585-9403.
- Does Kuei-Yu Chang O.D. Inc., a Professional Corporation accept Medicare?
- Kuei-Yu Chang O.D. Inc., a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Kuei-Yu Chang O.D. Inc., a Professional Corporation?
- The authorized official listed on Kuei-Yu Chang O.D. Inc., a Professional Corporation's NPPES record is Khiem Nguyen-Trong, Operations Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Kuei-Yu Chang O.D. Inc., a Professional Corporation's NPI active?
- Yes — Kuei-Yu Chang O.D. Inc., a Professional Corporation's NPI (1861048506) is active in the NPPES registry as of the last update on 2024-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.