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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Peter Gary Mertz, DDS

Dentist in Longmont, CO · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1376544429

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Registry record

Entity type Individual (Type 1)
Name Dr. Peter Gary Mertz
Credential DDS
Sex Male
Practice address Longmont, CO, 80503
Phone (303) 678-1111
Fax (303) 678-5168
Enumeration date Aug 10, 2005
Last updated in NPPES Feb 9, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 108150 (CO) Secondary
122300000X Dentist Dental Providers · License 108150 (CO) Primary
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.

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Frequently asked questions

Where does Peter Mertz practice?
The practice location on file with NPPES is in Longmont, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Peter Mertz?
The National Provider Identifier (NPI) for Peter Mertz is 1376544429, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-09.