Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Craig Alan Groninger, O.D.
Optometrist in Anderson, IN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538275201
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Registry record
Entity type Individual (Type 1)
Name Dr. Craig Alan Groninger
Credential O.D.
Sex Male
Practice address 2321 Charles St, Anderson, IN, 46013
Phone (765) 642-1851
Fax (765) 642-3756
Enumeration date Aug 22, 2006
Last updated in NPPES Sep 1, 2010
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 Craig Groninger practice?
The practice location on file with NPPES is in Anderson, IN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Craig Groninger?
The National Provider Identifier (NPI) for Craig Groninger is 1538275201, 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 2010-09-01.