Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Jo Horn, O.D.
Optometrist in Fayetteville, AR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831101393
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Jo Horn
Credential O.D.
Sex Female
Practice address 1100 N College Ave, Fayetteville, AR, 72703
Phone (479) 443-4301
Fax (479) 587-5921
Enumeration date Aug 13, 2006
Last updated in NPPES Jul 8, 2007
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 Mary Horn practice?
The practice location on file with NPPES is in Fayetteville, AR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Horn?
The National Provider Identifier (NPI) for Mary Horn is 1831101393, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.