Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Crystal S. Wong, O.D.
Optometrist in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659441525
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Registry record
Entity type Individual (Type 1)
Name Dr. Crystal S. Wong
Credential O.D.
Sex Female
Practice address 2349 S Wentworth Ave, Chicago, IL, 60616
Phone (312) 808-1893
Fax (312) 808-1834
Enumeration date Nov 8, 2006
Last updated in NPPES Aug 15, 2011
Taxonomy & licenses
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.
Frequently asked questions
Where does Crystal Wong practice?
The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Crystal Wong?
The National Provider Identifier (NPI) for Crystal Wong is 1659441525, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-15.