Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mrs. Marie G. Johnston, RN, LADC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1235112137

Mrs. Marie G. Johnston, RN, LADC is an Addiction (Substance Use Disorder) Counselor in Waterbury, Connecticut. Licensed in Connecticut. Registered with an NPI since 2005.

Licensed in
CT
In the registry since
2005
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
LADC — Licensed Alcohol and Drug Counselor
A licensed addiction counsellor.

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Practice location Address checks out

88 Grandview Ave Westmain Behavioral Health
Waterbury, CT 06708-2509
Phone: (203) 573-7500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 000399 (CT)
Addiction (Substance Use Disorder) Registered Nurse Taxonomy 163WA0400X · Licence E31451 (CT)

Record details

NPI number1235112137
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , LADC
Sole proprietorNo
NPI enumeratedNovember 23, 2005
Last updated in NPPESJuly 13, 2026

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