Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John D Boer, O.D.
Optometrist in Harrisburg, SD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225234453
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Registry record
Entity type Individual (Type 1)
Name Dr. John D Boer
Credential O.D.
Sex Male
Practice address 220 S Cliff Ave Ste 102, Harrisburg, SD, 57032
Phone (605) 213-2020
Enumeration date Jun 25, 2007
Last updated in NPPES Jul 13, 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 John Boer practice?
The practice location on file with NPPES is in Harrisburg, SD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Boer?
The National Provider Identifier (NPI) for John Boer is 1225234453, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-13.