Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Joseph Doyle Liddle, DDS
Dentist in American Fork, UT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003950833
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Registry record
Entity type Individual (Type 1)
Name Dr. Joseph Doyle Liddle
Credential DDS
Sex Male
Practice address 120 North Center, American Fork, UT, 84003
Phone (801) 756-3377
Enumeration date Feb 16, 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
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 Joseph Liddle?
Joseph Liddle 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.