Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Fill-in Interim Therapy Services, Pllc

Physical Therapy Clinic/Center in Missoula, MT · enumerated 2015 · authorized official Brenda Mahlum, Owner/Manager.

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

National Provider Identifier

1558737551

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Fill-in Interim Therapy Services, Pllc

Other name <Unavail>

Practice address 945 Wyoming Street, Suite 135, Missoula, MT, 59801

Phone (406) 544-6090

Fax (800) 886-0200

Enumeration date Aug 13, 2015

Last updated in NPPES Jan 10, 2022

Taxonomy & classification

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 432 (MT) Secondary

261QP2000X Physical Therapy Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Brenda Mahlum

Title Owner/Manager

Phone (406) 544-6090

Other identifiers

Identifier	Type	State	Issuer
1164591046	Other	MT	NPI
011000682	Other	MT	MEDICARE PTAN

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-01-10. Verify at npiregistry.cms.hhs.gov.

Where is Fill-in Interim Therapy Services, Pllc located?

The practice location on file with NPPES is in Missoula, MT.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-10.