Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark J Strahan, O.D.
Optometrist in Fort Wayne, IN · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104975945
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark J Strahan
Credential O.D.
Sex Male
Practice address 10420 Maysville Rd, Fort Wayne, IN, 46835
Phone (260) 492-5893
Fax (260) 493-5504
Enumeration date Jan 10, 2007
Last updated in NPPES Apr 22, 2009
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 Mark Strahan practice?
The practice location on file with NPPES is in Fort Wayne, IN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Strahan?
The National Provider Identifier (NPI) for Mark Strahan is 1104975945, 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 2009-04-22.