Ms. Bonnie Elaine Collier, LCSW

Where I Provide Care

Primary Office

165 Lancaster ST
Portland, ME  04101
phone: 207-874-1030
fax: 207-874-1044
This office is open Mon – Wed 7am – 6pm and Thurs - Friday 7am – 5pm. Some early morning or evening hours may be offered. Please contact us for a complete schedule of available hours.
2 Springbrook DR
Biddeford, ME  04005
phone: 207-282-1500
fax: 207-282-2581

Monday 8 AM -5 PM 
Tuesday 7 AM -7 PM
Wednesday 7 AM -7 PM
Thursday 7 AM -5 PM
Friday 8 AM -5 PM
Ms. Bonnie Elaine Collier, LCSW

Bonnie Elaine Collier, LCSW

Social Worker-Clinical


I graduated from Saint Anselm College with a B.A. in Sociology and Spanish and from Simmons College School of Social Work with a Master of Social Work, and have been working in the human services field since 2007. I have practiced social work in settings including residential treatment, schools, hospitals, and the community. At Maine Behavioral Healthcare I work with adults; primarily those who are looking for support with anxiety, depression, trauma, anger management, substance use, and relationship challenges.

I believe that all work within therapy needs to start with a strong therapeutic relationship. It takes a particular amount of awareness, insight, and humility for an individual to recognize that they need support in their daily living and to work towards personal growth. I use the basis of a therapeutic relationship founded in honesty and compassion to help clients reflect on their thinking and behavior patterns, build on their strengths and become the version of themselves that they want to be. 

I am a trauma-informed therapist trained in Cognitive Behavioral Therapy (CBT), motivational interviewing, and the liberation health model. I also use a variety of skills from Dialectical Behavior Therapy (DBT) and Acceptance and Commitment therapy to help people achieve their mental health goals. It is a privilege for me to help and empower individuals to recognize their strength and resiliency, and to support them along their social, spiritual, and psychological journey towards mental health wellness.


Education & Credentials

Education & Credentials

Board Certifications
  • Social Worker-Clinical, Pursuing
Medical Education
  • Simmons College, MSW, 2012



  • Maine Behavioral Healthcare since 2015