NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Xiao-Ou Ren, O. D.

Optometrist in Watchung, NJ · enumerated 2006.

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

National Provider Identifier

1679658009

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Registry record

Entity type Individual (Type 1)
Name Ms. Xiao-Ou Ren
Credential O. D.
Sex Female
Practice address Watchung, NJ, 07069
Phone (908) 769-6421
Fax (908) 769-7931
Enumeration date Oct 26, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 27TO 00139800 (NJ) Primary
152W00000X Optometrist Eye and Vision Services Providers · License OA 00601200 (NJ) Secondary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 does Xiao-Ou Ren practice?
The practice location on file with NPPES is in Watchung, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Xiao-Ou Ren?
The National Provider Identifier (NPI) for Xiao-Ou Ren is 1679658009, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.