Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Frank J Won, O.D.
Optometrist in Springfield, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1285751420
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Registry record
Entity type Individual (Type 1)
Name Dr. Frank J Won
Credential O.D.
Sex Male
Practice address 1515 Allen St, Springfield, MA, 01118
Phone (413) 782-0030
Fax (413) 496-1985
Enumeration date Mar 23, 2007
Last updated in NPPES Aug 4, 2026
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
What is the NPI number for Frank Won?
The National Provider Identifier (NPI) for Frank Won is 1285751420, a Type 1 (individual) record in the CMS NPPES registry.
Where does Frank Won practice?
The practice location on file with NPPES is in Springfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → John Alifano Family Medicine Physician · Springfield, MA NPI 1013995430 Urgent Care Physicians PC Emergency Care Clinic/Center · Springfield, MA NPI 1750369005 Ira Helfand Family Medicine Physician · Springfield, MA NPI 1003867714 Maryann Rubis Optometrist · Springfield, MA NPI 1659380194 John Papale Ophthalmology Physician · Springfield, MA NPI 1760491377 Alan Stefanini Pediatrics Physician · Springfield, MA NPI 1750494076 Anna Lea Kantor Pediatric Nurse Practitioner · Springfield, MA NPI 1659485902 Sumner Pediatrics PC Pediatrics Physician · Springfield, MA NPI 1235246166
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-04.