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

Holly L Demarest, LAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1275886269

Holly L Demarest, LAC is an Addiction (Substance Use Disorder) Counselor in Billings, Montana. Licensed in Montana. Registered with an NPI since 2012.

Licensed in
MT
In the registry since
2012
What do these letters mean?
LAC — Licensed Associate Counselor
A counsellor practising under supervision toward full licensure. In some states the same letters mean Licensed Acupuncturist.

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Practice location Address checks out

1231 N 29th St
Billings, MT 59101
Phone: (406) 248-3175
Fax: (406) 248-3821
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 1238 (MT)

Record details

NPI number1275886269
Entity typeIndividual (Type 1)
GenderFemale
Credentials LAC
Sole proprietorNo
NPI enumeratedOctober 16, 2012
Last updated in NPPESOctober 16, 2012

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