Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Thomas F Armstrong, DDS
Endodontics in Niles, MI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396967147
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Registry record
Entity type Individual (Type 1)
Name Dr. Thomas F Armstrong
Credential DDS
Sex Male
Practice address 109 S Lincoln Ave, Niles, MI, 49120
Phone (269) 684-3580
Enumeration date May 2, 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
Where does Thomas Armstrong practice?
The practice location on file with NPPES is in Niles, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Armstrong?
The National Provider Identifier (NPI) for Thomas Armstrong is 1396967147, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → James Thompson Chiropractor · Niles, MI NPI 1851363295 Thompson Family Chiropractic and Wellness Center P.C. Chiropractor · Niles, MI NPI 1871753160 Samantha Beckwith Chiropractor · Niles, MI NPI 1821624552 David Sirovica Chiropractor · Niles, MI NPI 1811583966 Pure Motion Chiropractic Pllc Chiropractor · Niles, MI NPI 1538803564
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.