NPPES file of Aug 9, 2026

Clark Yung Hsiang Chang, O.D.

Optometrist · Philadelphia, PA

Clark Yung Hsiang Chang, O.D. is an optometrist with a practice address in Philadelphia, Pennsylvania, and NPI 1528267507, issued on Jul 11, 2007. Check the license (Pennsylvania OEG001906, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1528267507
Name
Clark Yung Hsiang Chang
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OEG001906 PA
Self-reported in NPPES; status is on the state search
Practice location
1200 W Godfrey Ave, Philadelphia, PA 19141
Phone
(215) 276-6000
Enumerated
Jul 11, 2007
Record last updated
Jul 11, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(215) 276-1329
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1200 W Godfrey Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maria Adriaansen, O.DOptometrist1508428194
  2. Robert Africano, ODOptometrist1265817720
  3. Gwenn Amos, ODOptometrist1598850349
  4. Sarah Appel, ODOptometrist1760499834
  5. Maria Armandi, ODOptometrist1699885657
  6. Nikhil Bansal, ODOptometrist1215538061

Verify Clark Yung Hsiang Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license OEG001906    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Pennsylvania license search

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Industry payments in 2024: $704.79

9 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Clark Chang$704.79
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Optometrist providers in Pennsylvania

There are 2,640 optometrist records in Pennsylvania.

All 2,640 in Pennsylvania → Every provider in Philadelphia →

Other optometrist records in Pennsylvania

  1. Dina Abdelhady, ODGlenside, PA1225761844
  2. Mark Abelman, ODPittsburgh, PA1043200751
  3. Azad AbulkalamKing Of Prussia, PA1114491917
  4. Joanne Adolfo, O.D.Butler, PA1104133271
  5. Maria Adriaansen, O.DPhiladelphia, PA1508428194
  6. Christopher Adsit, ODMeadville, PA1477627727
  7. Veena Adusumilli, O.D.Bethlehem, PA1891856225
  8. Robert Africano, ODPhiladelphia, PA1265817720
  9. Ross Agagliati, O.D.Homestead, PA1649623992
  10. Kimberly Agostinelli, ODCovington Twp, PA1902835671

Common questions

What is Clark Yung Hsiang Chang, O.D.'s NPI number?

Clark Yung Hsiang Chang, O.D.'s National Provider Identifier (NPI) is 1528267507, issued on Jul 11, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Clark Yung Hsiang Chang, O.D. located?

The NPPES record lists a practice address at 1200 W Godfrey Ave, Philadelphia, PA, 19141. Phone: (215) 276-6000. Providers update this record themselves, so call before visiting.

How can I verify Clark Yung Hsiang Chang, O.D.'s license?

NPPES lists Pennsylvania license number OEG001906, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.