Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Kelli Mullen LLC

Organization Clinical Social Worker · NPI 1740985035

Kelli Mullen LLC is a Clinical Social Worker in Billings, Montana. Registered with an NPI since 2023.

In the registry since
2023
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

2812 1st Ave N Ste 511
Billings, MT 59101-2312
Phone: (406) 416-4317
Fax: (406) 797-1605
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1740985035
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Kelli Mullen — Owner · (406) 416-4317
NPI enumeratedApril 4, 2023
Last updated in NPPESApril 4, 2023
Certification dateApril 4, 2023
Mailing addressPo Box 1214, Billings, MT 59103-1214

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