About Us
Whole-Person Psychiatric Care for Maine Residents
Find trusted mental health care in a grounded and supportive environment.
Willowroot Collaborative is a private psychiatric practice founded in 2025. We provide whole-person psychiatric care that integrates thoughtful medication management with supportive therapy and wellness-focused strategies.
We believe mental health care should treat the whole person, not just the diagnosis.
Mission
To support resilience and healing for veterans and all individuals we serve, helping each person find lasting balance and growth.
Location
Based in Augusta, we provide psychiatric care to the Kennebec Valley region and beyond. Through telehealth, we’re able to serve clients throughout the state of Maine.
Meet Olivia Marson, DNP, PMHNP-BC
Founder & Psychiatric-Mental Health Nurse Practitioner
Dr. Olivia Marson is a board-certified psychiatric nurse practitioner dedicated to providing evidence-based mental health care. She takes a trauma-informed, whole-person approach to treatment by integrating medication management and supportive therapy to help clients achieve meaningful, lasting change.
Olivia believes in creating a calm, collaborative environment where clients feel truly heard and understood. Her goal is to help each person move toward healing and resilience through care that is thoughtful, personal, and grounded in trust.
Education & Training
- Doctor of Nursing Practice (DNP) — Duke University
- Master of Science in Nursing — University of Southern Maine
- Board Certified: ANCC Psychiatric-Mental Health Nurse Practitioner
professional memberships
Begin Your Path Toward Healing
Reaching out for help takes courage, and you don’t have to do it alone. At Willowroot Collaborative, we’re here to support you with thoughtful, whole-person psychiatric care.