Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Grace Y Song, O.D.
Optometrist in Valencia, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821149063
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Registry record
Entity type Individual (Type 1)
Name Grace Y Song
Credential O.D.
Sex Female
Practice address 24201 Valencia Blvd, Valencia Town Center, Valencia, CA, 91355
Phone (661) 287-9893
Fax (661) 287-3831
Enumeration date Jan 15, 2007
Last updated in NPPES Mar 23, 2010
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 Grace Song practice?
The practice location on file with NPPES is in Valencia, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Grace Song?
The National Provider Identifier (NPI) for Grace Song is 1821149063, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Ann Kim Optometrist · Valencia, CA NPI 1366592933 David Wong Optometrist · Valencia, CA NPI 1013069418 Vu Nguyen Optometrist · Valencia, CA NPI 1023161759 Luxottica of America Inc. Eyewear Supplier · Valencia, CA NPI 1487700241 David Wong, O.D., Visio Optometry, Inc. Optometrist · Valencia, CA NPI 1154873040
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-23.