Denis Callahan
Nottingham,NH
Summary
Master's level social worker with 28+ years of experience in high-intensity, secure clinical settings including prisons, residential treatment, schools, and community-based programs. Proven leader in program development and organizational growth, specializing in individual, family, and group treatment for clients with mental health, behavioral challenges, and substance use disorders. Founder and executive leader of a multi-site organization having served thousands of individuals and families across New Hampshire.
Overview
27
27
years of professional experience
1
1
Certification
Work History
Owner/ Founder/ Executive Co-Director
Home Base Collaborative Family Counseling
Nashua, Rochester, Concord, Keene Manchester, New Hampshire
08.2011 - 03.2026
- Oversee development of program, and daily operations. Provide individual and family therapy, consultant with schools and outside providers, and conduct trainings. As of 2020, Home Base has over 100 staff and serves approximately 500 individuals and families of NH
- Responsible for direct management and implementation of IDCMP Impaired Driver Program.
- Responsible for Home Base School Program
- Responsible for Home Base Private Practice
- Responsible for Home Base N.H. State contracts
Deputy Director
Capital Region Children’s Center (CRCC)
Washington, D.C.
05.2006 - 06.2011
- Launch CRCC- a community based wrap-around program- from inception. Staff development, policy writing, daily operations, and provide direct clinical services- group, individual, & family therapy.
Milieu Therapist
Chauncy Hall Academy- NAFI
Westboro, Massachusetts
05.2005 - 06.2006
- Provided clinical services at an intensive residential treatment placement Treatment modalities included individual and family counseling, as well as group therapy.
Milieu Staff
Home for Little Wanderers
Allston, Massachusetts
08.2004 - 08.2005
- Provide milieu services, including group treatment, at a residential treatment step down.
Therapist Intern
Bridgewater State Hospital
Bridgewater, Massachusetts
09.2003 - 06.2004
- Provide clinical services to inmates determined to be criminally insane. Bio-psychosocials, Court Reports, Competency Hearings, Individual Therapy, Substance Use group.
Milieu Supervisor
Brighton Treatment Center
Brighton, Massachusetts
09.2002 - 07.2003
- Provide supportive services to the milieu at a DYRS locked facility.
School Counselor Intern
Dorchester High School
Dorchester, Massachusetts
09.2002 - 06.2003
- Provide school based counseling supports as defined by IEP.
Direct Care Staff & Assistant Supervisor
Wediko Children’s Services
Hillsboro, New Hampshire
03.1999 - 09.2002
- Provide clinical services at a residential treatment facility for boys 8-17 struggling with social, emotional and behavioral issues. Trained in crisis intervention. Co-facilitated daily group therapy, provided behavior modification and successful transitions home to family.
Education
MSW - Forensics
Boston College Graduate School of Social Work
Chestnut Hill, Massachusetts05-2004
Criminal Justice & Sociology
American International College
Springfield, Massachusetts05-1998
Skills
- 28 years of experience in intense, secure, clinical settings (prisons, intensive residential, schools, and community-based); as well as, Program creation and development Specializing in individual, family, and group work with individuals struggling with mental health, behavioral issues, and substance use
Certification
Additional Certification: Hypno -therapy, DBT, REBT, Insight oriented, Family Systems, CBT, MATCH - Therapy, TF CBT, N.H Stae approved Clinical Supervisor for LADC, MLDAC, LCMHC, LICSW
Timeline
Owner/ Founder/ Executive Co-Director
Home Base Collaborative Family Counseling
08.2011 - 03.2026
Deputy Director
Capital Region Children’s Center (CRCC)
05.2006 - 06.2011
Milieu Therapist
Chauncy Hall Academy- NAFI
05.2005 - 06.2006
Milieu Staff
Home for Little Wanderers
08.2004 - 08.2005
Therapist Intern
Bridgewater State Hospital
09.2003 - 06.2004
Milieu Supervisor
Brighton Treatment Center
09.2002 - 07.2003
School Counselor Intern
Dorchester High School
09.2002 - 06.2003
Direct Care Staff & Assistant Supervisor
Wediko Children’s Services
03.1999 - 09.2002
Criminal Justice & Sociology
American International College
MSW - Forensics
Boston College Graduate School of Social Work