Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Byron T Song, M.D. Inc
Specialist in Glendora, CA · enumerated 2011 · authorized official Donna Song, Corp. Secretary.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629363908
See something wrong? Report a correction
Registry record
Taxonomy & classification
Authorized official
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 is Byron T Song, M.D. Inc located?
How current is this record?
Providers at this address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-14.