Professional Therapist

Ms. Cecilia Cassidy Lenahan, LCPC, LAC

510 1st Ave N, Great Falls, Montana, 59401-2592

About Ms. Cecilia Cassidy Lenahan

Ms. Cecilia Cassidy Lenahan is a therapist based in Great Falls, Montana who is specialized in Professional Counselor. Active license number of Ms. Cecilia Cassidy Lenahan is BBH-LAC-LIC-4258 for Addiction (Substance Use Disorder) Counselor in Montana. Her current practice location is 510 1st Ave N, Great Falls. Patients can reach her at 406-454-6973 or can fax her at 406-791-9277. Ms. Cecilia Cassidy Lenahan is LCPC, LAC in Professional Counselor and her NPI number (Unique professional ID assigned by NPPES) is 1659767580.

Ms. Cecilia Cassidy Lenahan is a licensed mental health practitioner trained to help individuals, couples, and groups address emotional, psychological, and behavioral challenges. She uses talk therapy and evidence-based counseling methods to support clients in managing mental health conditions, improving relationships, and developing coping strategies for life’s difficulties.

Practice Information

Ms. Cecilia Cassidy Lenahan 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 Ms. Cecilia Cassidy Lenahan
Specialization Professional Counselor
Credentials LCPC, LAC
Gender Female
Practice Address: 510 1st Ave N,
Great Falls, MT - 59401-2592
Fax 406-791-9277

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 Number1659767580
NPI Enumeration Date: 07 Apr, 2015
NPI Last Update On: 13 Apr, 2026

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 Ms. Cecilia Cassidy Lenahan are as mentioned below.

License NumberSpecializationStateStatus
BBH-LAC-LIC-4258Addiction (Substance Use Disorder) Counselor MontanaPrimary
BBH-LCPC-LIC-81696Professional Counselor MontanaSecondary

Mailing Address

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

Ms. Cecilia Cassidy Lenahan
601 1st Ave N,
Great Falls, MT - 59401-2510
Phone: 406-454-6973
Fax: 406-791-9277

Book an Appointment with Ms. Cecilia Cassidy Lenahan

To schedule an appointment, contact Ms. Cecilia Cassidy Lenahan at 510 1st Ave N, Great Falls, Montana or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Ms. Cecilia Cassidy Lenahan:

Ms. Cecilia Cassidy Lenahan is a therapist specializing in Addiction (Substance Use Disorder) Counselor. She 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.

Yes, Ms. Cecilia Cassidy Lenahan is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Ms. Cecilia Cassidy Lenahan practices at 510 1st Ave N, Great Falls, Montana, 59401-2592.

To schedule an appointment with Ms. Cecilia Cassidy Lenahan, please contact the office at 406-454-6973.

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