Addiction Therapist

Mark L Dennehy

630 W Mercury St, Butte, Montana, 59701-1510

About Mark L Dennehy

Mark L Dennehy is a therapist based in Butte, Montana who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Mark L Dennehy is 19009 for Addiction (Substance Use Disorder) Counselor in Montana. His current practice location is 630 W Mercury St, Butte. Patients can reach him at 406-299-3448. Mark L Dennehy NPI number (Unique professional ID assigned by NPPES) is 1336000165.

Mark L Dennehy is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his 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

Mark L Dennehy 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 Mark L Dennehy
Specialization Addiction (Substance Use Disorder) Counselor
Gender Male
Practice Address: 630 W Mercury St,
Butte, MT - 59701-1510

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 Number1336000165
NPI Enumeration Date: 20 Nov, 2025
NPI Last Update On: 20 Nov, 2025

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 Mark L Dennehy are as mentioned below.

License NumberSpecializationStateStatus
19009Addiction (Substance Use Disorder) Counselor MontanaPrimary

Mailing Address

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

Mark L Dennehy
630 W Mercury St,
Butte, MT - 59701-1510
Phone: 406-299-3448

Book an Appointment with Mark L Dennehy

To schedule an appointment, contact Mark L Dennehy at 630 W Mercury St, Butte, Montana or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mark L Dennehy:

Mark L Dennehy is a therapist specializing in Addiction (Substance Use Disorder) Counselor. He is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his 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.

Yes, Mark L Dennehy is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Mark L Dennehy practices at 630 W Mercury St, Butte, Montana, 59701-1510.

To schedule an appointment with Mark L Dennehy, please contact the office at 406-299-3448.

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