Kelli Mullen, LCSW
NPI 1578228961 · Clinical Social Worker · Billings, MT
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kelli Mullen, LCSW is a Clinical Social Worker provider in Billings, MT (NPI 1578228961).
Provider details
- NPI number
- 1578228961
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 50661 (MT)
Specialties & taxonomies
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
4 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2021-11-01
- Last updated
- 2021-11-01
- Certified
- 2021-11-01
Frequently asked questions
- What is Kelli Mullen's NPI number?
- Kelli Mullen's National Provider Identifier (NPI) is 1578228961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kelli Mullen's specialty?
- Kelli Mullen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Kelli Mullen located?
- Kelli Mullen's practice location on file with NPPES is 3737 Grand Ave Ste 6, Billings, MT 59102-6258.
- What is Kelli Mullen's phone number?
- The practice phone number listed in the NPPES registry for Kelli Mullen is (406) 839-2985.
- Does Kelli Mullen accept Medicare?
- Kelli Mullen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kelli Mullen's NPI active?
- Yes — Kelli Mullen's NPI (1578228961) is active in the NPPES registry as of the last update on 2021-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.