Gwendolyn Chang, OD
NPI 1861114183 · Optometrist · Hacienda Heights, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwendolyn Chang, OD is a Optometrist provider in Hacienda Heights, CA (NPI 1861114183).
Provider details
- NPI number
- 1861114183
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- Yes
- License
- OPT35282-TLG (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 tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$188 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 1711 W Temple St Ste 7135Los Angeles, CA 90026-7336Phone: (213) 413-8213
- 1450 University Ave Ste DRiverside, CA 92507-4428Phone: (951) 682-8190
Registry dates
- Enumerated
- 2022-09-13
- Last updated
- 2022-09-15
- Certified
- 2022-09-15
Frequently asked questions
- What is Gwendolyn Chang's NPI number?
- Gwendolyn Chang's National Provider Identifier (NPI) is 1861114183, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwendolyn Chang's specialty?
- Gwendolyn Chang is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Gwendolyn Chang located?
- Gwendolyn Chang's practice location on file with NPPES is 16388 Colima Rd Ste 101, Hacienda Heights, CA 91745-5523.
- What is Gwendolyn Chang's phone number?
- The practice phone number listed in the NPPES registry for Gwendolyn Chang is (626) 854-1131.
- Does Gwendolyn Chang accept Medicare?
- Gwendolyn Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwendolyn Chang's NPI active?
- Yes — Gwendolyn Chang's NPI (1861114183) is active in the NPPES registry as of the last update on 2022-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.