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

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1023564093

Justine Welch Mastin, LMFT, LADC is an Addiction (Substance Use Disorder) Counselor in Minneapolis, Minnesota. Practices as a sole proprietor. Licensed in Minnesota.

Licensed in
MN
In the registry since
2016
Specialties on file
2
What do these letters mean?
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.
LADC — Licensed Alcohol and Drug Counselor
A licensed addiction counsellor.

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Practice location Address checks out

6640 Lyndale Ave S Ste 110
Minneapolis, MN 55423
Phone: (612) 324-0198
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 2927 (MN)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 303216 (MN)

Record details

NPI number1023564093
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMFT , LADC
Sole proprietorYes
NPI enumeratedAugust 30, 2016
Last updated in NPPESJuly 9, 2018

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