Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Vanessa Loo Chang, O.D.

Optometrist in Mcallen, TX · enumerated 2007 · practices at Sawyer Lambert Od Pllc.

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

National Provider Identifier

1386869451

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Registry record

Entity type Individual (Type 1)

Name Dr. Vanessa Loo Chang

Credential O.D.

Sex Female

Practice address 318 W Nolana Ave, Mcallen, TX, 78504

Phone (956) 664-0444

Fax (956) 664-0446

Enumeration date Apr 16, 2007

Last updated in NPPES May 16, 2012

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2733T (TX) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
037005801	Medicaid	TX	-
2733T	Other	TX	TX OPTOMETRY LISCENSE

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

Is NPI 1386869451 active?

Yes, as of the latest NPPES snapshot, NPI 1386869451 is active (record last updated 2012-05-16).

How do I verify Vanessa Chang's NPI record?

Cross-check NPI 1386869451 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Sawyer Lambert Od Pllc Optometrist · Mcallen, TX NPI 1154235216

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-16.