Addiction Therapist

Justine Welch Mastin, LMFT, LADC

6640 Lyndale Ave S Ste 110, Minneapolis, Minnesota, 55423

About Justine Welch Mastin

Justine Welch Mastin is a therapist based in Minneapolis, Minnesota who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Justine Welch Mastin is 2927 for Marriage & Family Therapist in Minnesota. Her current practice location is 6640 Lyndale Ave S Ste 110, Minneapolis. Patients can reach her at 612-324-0198. Justine Welch Mastin is LMFT, LADC in Addiction (Substance Use Disorder) Counselor and her NPI number (Unique professional ID assigned by NPPES) is 1023564093.

Justine Welch Mastin is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. She helps her clients by manage and overcome the psychological, emotional, and behavioral challenges related to substance use. Counselors also work closely with families and support systems to help them better understand their loved one’s illness. SUD counselors help to promote long-term sobriety, emotional stability, and overall mental wellness for both the individual and their family.

Practice Information

Justine Welch Mastin speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Justine Welch Mastin
Specialization Addiction (Substance Use Disorder) Counselor
Credentials LMFT, LADC
Gender Female
Practice Address: 6640 Lyndale Ave S Ste 110,
Minneapolis, MN - 55423

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1023564093
NPI Enumeration Date: 30 Aug, 2016
NPI Last Update On: 09 Jul, 2018

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Justine Welch Mastin are as mentioned below.

License NumberSpecializationStateStatus
2927Marriage & Family Therapist MinnesotaPrimary
303216Addiction (Substance Use Disorder) Counselor MinnesotaSecondary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Justine Welch Mastin
5510 Washburn Ave S,
Minneapolis, MN - 55410-2437
Phone: 612-616-5782

Book an Appointment with Justine Welch Mastin

To schedule an appointment, contact Justine Welch Mastin at 6640 Lyndale Ave S Ste 110, Minneapolis, Minnesota or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Justine Welch Mastin:

Justine Welch Mastin is a therapist specializing in Marriage & Family Therapist. She A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.

Yes, Justine Welch Mastin is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Justine Welch Mastin practices at 6640 Lyndale Ave S Ste 110, Minneapolis, Minnesota, 55423.

To schedule an appointment with Justine Welch Mastin, please contact the office at 612-324-0198.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.