Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Preston Grimes, DDS
Dentist in Hanover, PA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1114260569
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Registry record
Entity type Individual (Type 1)
Name Dr. John Preston Grimes
Credential DDS
Sex Male
Practice address 420 W Elm Ave, Hanover, PA, 17331
Phone (717) 632-4164
Fax (717) 632-8987
Enumeration date Apr 4, 2013
Last updated in NPPES Apr 4, 2013
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS 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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Grimes?
John Grimes is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-04.