Mackenzie Stiff, LCSW
NPI 1356150064 · Clinical Social Worker · Missoula, MT
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mackenzie Stiff, LCSW is a Clinical Social Worker provider in Missoula, MT (NPI 1356150064).
Provider details
- NPI number
- 1356150064
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Social Worker104100000X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-01-06
- Last updated
- 2025-01-06
- Certified
- 2025-01-06
Frequently asked questions
- What is Mackenzie Stiff's NPI number?
- Mackenzie Stiff's National Provider Identifier (NPI) is 1356150064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mackenzie Stiff's specialty?
- Mackenzie Stiff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mackenzie Stiff located?
- Mackenzie Stiff's practice location on file with NPPES is 405 S 1st St W, Missoula, MT 59801-1850.
- What is Mackenzie Stiff's phone number?
- The practice phone number listed in the NPPES registry for Mackenzie Stiff is (406) 541-8472.
- Does Mackenzie Stiff accept Medicare?
- Mackenzie Stiff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mackenzie Stiff's NPI active?
- Yes — Mackenzie Stiff's NPI (1356150064) is active in the NPPES registry as of the last update on 2025-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.