Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Garfield Polkinghorne, DDS
Dentist in Edmond, OK · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215139639
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Registry record
Entity type Individual (Type 1)
Name Dr. John Garfield Polkinghorne
Credential DDS
Sex Male
Practice address 601 N Kelly, Suite 104, Edmond, OK, 73003
Phone (405) 341-4400
Fax (405) 359-9400
Enumeration date Jun 5, 2007
Last updated in NPPES Jul 8, 2007
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
Where does John Polkinghorne practice?
The practice location on file with NPPES is in Edmond, OK. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Polkinghorne?
The National Provider Identifier (NPI) for John Polkinghorne is 1215139639, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.