Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Peter J Twelker, DDS
Dentist in Cupertino, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649314162
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Peter J Twelker
Credential DDS
Sex Male
Practice address 10383 Torre Ave Suite I, Cupertino, CA, 95014
Phone (408) 257-3031
Fax (408) 257-5842
Enumeration date Feb 17, 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
What is the NPI number for Peter Twelker?
The National Provider Identifier (NPI) for Peter Twelker is 1649314162, a Type 1 (individual) record in the CMS NPPES registry.
Where does Peter Twelker practice?
The practice location on file with NPPES is in Cupertino, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.