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Amanda Martineau, ARNP, PMHNP-BC

Amanda is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) providing evidence-based psychiatric care to adults. She specializes in comprehensive psychiatric assessment, thoughtful medication management, and collaborative care planning. Amanda is committed to supporting adults experiencing anxiety, depression, trauma-related symptoms, mood dysregulation, and life stressors by tailoring care to each person’s unique needs and goals.

Who I Work With

I work with adults experiencing challenges such as anxiety, depression, trauma-related symptoms, mood fluctuations, and life stressors. I am especially experienced supporting individuals in high-stress professions, including frontline and healthcare workers, alongside adults from all walks of life navigating work, relationships, family demands, or significant transitions.

My Approach To Treatment

I provide collaborative, evidence-based psychiatric care grounded in respect, clarity, and informed choice. My role is to conduct thorough psychiatric evaluations, offer thoughtful medication recommendations when appropriate, and monitor treatment carefully over time. Care is individualized, goal-oriented, and centered on your preferences and values. When helpful, I coordinate with therapists and other providers to support continuity and overall wellness.

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Areas of Focus:

  • Trauma & Stress-Related Conditions: post-traumatic stress disorder (PTSD), acute stress disorder, essential/front line worker trauma, healthcare worker trauma

  • Anxiety Disorders: generalized anxiety disorder, panic disorder, social anxiety

  • Mood Disorders: major depressive disorder, dysthymia

  • Life Adjustments & Transitions: grief and loss, major life changes, postpartum depression & anxiety, perimenopausal issues

  • Neurodevelopmental Concerns: attention-deficit/hyperactivity disorder (ADHD)

NEW CLIENTS

New clients get started here.

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Currently accepting new clients.

 

​​In person appointments are available in Tumwater, WA.​ Telehealth available anywhere in WA state.

INSURANCE & FEES

​​Accepting:

Regence, Premera, First Choice, Aetna

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Private Pay Fees:

Intake $340

30 Min Session $150

60 Min Session $300​

CONTACT

Front Desk:

360-819-0525 (call/text)

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Email:

tumwatertherapy@gmail.com​

Tumwater Therapy Collective
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LOCATION

111 Tumwater Blvd SE

Suite C213

Tumwater, WA  98501

Call/Text: 360-819-0525

Fax: 360-634-3565

Email: tumwatertherapy@gmail.com

CONTACT

FRONT DESK HOURS

Tuesday & Wednesday

9:00am - 4:00pm​

​Thursday & Friday

9:00am - 5:00pm

*Appointments available outside of these hours

© 2025-2026 by Tumwater Therapy Collective

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