Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

James C Liang MD Sc

Ophthalmology Physician in Oak Lawn, IL · enumerated 2006 · authorized official James Liang, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1144208596

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Registry record

Entity type Organization (Type 2)

Legal business name James C Liang MD Sc

Other name <Unavail>

Practice address 4429 W 95th St, Oak Lawn, IL, 60453

Phone (708) 422-2665

Fax (708) 422-2997

Enumeration date Jan 5, 2006

Last updated in NPPES Jul 31, 2009

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036051267 (IL) Primary

Authorized official

Name James Liang

Title President

Phone (708) 422-2665

Other identifiers

Identifier	Type	State	Issuer
036051267	Medicaid	IL	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where is James C Liang MD Sc located?

The practice location on file with NPPES is in Oak Lawn, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-07-31. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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James Liang Ophthalmology Physician · Oak Lawn, IL NPI 1578541983

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-31.