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

Mrs. Holly Elizabeth Mook

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1386977791

Mrs. Holly Elizabeth Mook is a Clinical Social Worker in Helena, Montana. Qualified in 2023, 3 years ago. Practices as a sole proprietor. Licensed in Montana.

Years since qualifying
3
Licensed in
MT
In the registry since
2009
Specialties on file
2

Practice location Address checks out

1930 9th Ave
Helena, MT 59601-4759
Phone: (406) 457-0000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 79599 (MT)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 1030 (MT)

Record details

NPI number1386977791
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedSeptember 16, 2009
Last updated in NPPESMay 21, 2025
Certification dateMay 21, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Accepts Medicare assignment Not indicated

Other providers in Helena