Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Aaron D Mortensen, D.M.D
Dentist in Longmont, CO · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861726978
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Aaron D Mortensen
Credential D.M.D
Sex Male
Practice address 1750 Mountain View Ave, Longmont, CO, 80501
Phone (303) 678-7783
Fax (303) 532-2287
Enumeration date Sep 22, 2009
Last updated in NPPES Sep 22, 2009
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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 Aaron Mortensen?
The National Provider Identifier (NPI) for Aaron Mortensen is 1861726978, a Type 1 (individual) record in the CMS NPPES registry.
Where does Aaron Mortensen practice?
The practice location on file with NPPES is in Longmont, CO. 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 2009-09-22.