Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Katherine Armstrong, DPT
Physical Therapist in Kalispell, MT · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1982253944
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Registry record
Entity type Individual (Type 1)
Name Mary Katherine Armstrong
Credential DPT
Sex Female
Practice address 175 Commons Loop Ste 100, Kalispell, MT, 59901
Phone (406) 752-7250
Enumeration date Sep 11, 2019
Last updated in NPPES May 13, 2022
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 17206 (MT) Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession.
About the DPT 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 specialty is Mary Armstrong?
Mary Armstrong is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Lynnell Gravelle Physical Therapist · Kalispell, MT NPI 1215018312 Tara Johnston Physical Therapist · Kalispell, MT NPI 1538223037 Alexis Ordelheide Physical Therapist · Kalispell, MT NPI 1891172474 Brianna Irion Physical Therapist · Kalispell, MT NPI 1124511720 Daria Davis Physical Therapy Assistant · Kalispell, MT NPI 1376137406 Logan Streit Physical Therapist · Kalispell, MT NPI 1619685757
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-13.