Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Edward Mclain, O.D.
Optometrist in Clackamas, OR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356446900
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Registry record
Entity type Individual (Type 1)
Name Mark Edward Mclain
Credential O.D.
Sex Male
Practice address 12100 Se Stevens Ct Suite 106, Clackamas, OR, 97086
Phone (503) 353-7269
Enumeration date Sep 14, 2006
Last updated in NPPES Jul 12, 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
What is the NPI number for Mark Mclain?
The National Provider Identifier (NPI) for Mark Mclain is 1356446900, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Mclain practice?
The practice location on file with NPPES is in Clackamas, OR. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-12.