Clark Chang, O.D.
NPI 1528267507 · Optometrist · Philadelphia, PA
Clark Chang, O.D. is a Optometrist provider in Philadelphia, PA (NPI 1528267507).
Provider details
- NPI number
- 1528267507
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- No
- License
- OEG001906 (PA)
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
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
$705 across 9 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
Registry dates
- Enumerated
- 2007-07-11
- Last updated
- 2007-07-11
Frequently asked questions
- What is Clark Chang's NPI number?
- Clark Chang's National Provider Identifier (NPI) is 1528267507, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clark Chang's specialty?
- Clark Chang is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Clark Chang located?
- Clark Chang's practice location on file with NPPES is 1200 W Godfrey Ave, Philadelphia, PA 19141-3323.
- What is Clark Chang's phone number?
- The practice phone number listed in the NPPES registry for Clark Chang is (215) 276-6000.
- Is Clark Chang's NPI active?
- Yes — Clark Chang's NPI (1528267507) is active in the NPPES registry as of the last update on 2007-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.