Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jason D. Guilford, O.D.
Optometrist in York, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508877390
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Registry record
Entity type Individual (Type 1)
Name Dr. Jason D. Guilford
Credential O.D.
Sex Male
Practice address 2553 E Market St, York, PA, 17402
Phone (717) 757-5632
Enumeration date Aug 10, 2006
Last updated in NPPES Nov 8, 2021
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| DC9413 | Other | PA | RAILROAD |
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 Jason Guilford?
The National Provider Identifier (NPI) for Jason Guilford is 1508877390, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jason Guilford practice?
The practice location on file with NPPES is in York, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-08.