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CALL/TEXT 360-819-0525
The Team
At Tumwater Therapy Collective, our providers work together as an integrated team. Each clinician contributes their individual strengths and areas of expertise, united by a shared dedication to delivering exceptional, compassionate care. Meet our collective below.
Founder & Clinical Psychologist
Dr. Jennifer Koch, Psy.D. is a licensed clinical psychologist specializing in trauma treatment for first responders. Her mission is to provide expert, culturally competent care that honors the unique challenges of high-stress professions and supports lasting recovery.
Psychiatric Nurse Practitioner
Valerie Brandt, PMHNP-BC, is a board-certified psychiatric nurse practitioner who provides trauma-informed, whole-person care for adults navigating anxiety, depression, trauma, and life transitions. She integrates evidence-based medication management with supportive psychotherapy to help clients feel grounded, empowered, and understood.
Psychiatric Nurse Practitioner
Amanda Martineau, PMHNP-BC, is a board certified psychiatric nurse practitioner who values collaboration, inclusivity, and patient empowerment. She provides medication management and supportive care for adults experiencing anxiety, depression, trauma, and major life changes—helping each client find clarity and confidence in their healing process.
Kaylyn Rants
Operations Director
Kaylyn Rants is the heart of the collective—ensuring the behind-the-scenes details run seamlessly so clients and providers can focus on care. As the first friendly face you’ll see when you arrive, Kaylyn brings warmth, professionalism, and genuine connection to every interaction. She is a key part of creating a positive, supportive environment.
