Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Dirk F Massie, OD
Optometrist in Swansea, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972510345
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Registry record
Entity type Individual (Type 1)
Name Dr. Dirk F Massie
Credential OD
Sex Male
Practice address 4111 N Illinois St, Swansea, IL, 62226
Phone (618) 234-3053
Fax (168) 234-6331
Enumeration date Aug 1, 2006
Last updated in NPPES Aug 27, 2012
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 Dirk Massie practice?
The practice location on file with NPPES is in Swansea, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dirk Massie?
The National Provider Identifier (NPI) for Dirk Massie is 1972510345, a Type 1 (individual) record in the CMS NPPES registry.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-27.