Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Joseph Zimmer, DDS
Dentist in Dubuque, IA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1285719666
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Registry record
Entity type Individual (Type 1)
Name Dr. John Joseph Zimmer
Credential DDS
Sex Male
Practice address 2095 John F Kennedy Rd, Dubuque, IA, 52002
Phone (563) 557-1111
Fax (563) 557-1227
Enumeration date Oct 26, 2006
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 John Zimmer?
The National Provider Identifier (NPI) for John Zimmer is 1285719666, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Zimmer practice?
The practice location on file with NPPES is in Dubuque, IA. 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.