
At Serenity Psychiatry & Behavioral Health Services, we provide compassionate and evidence-based treatment to help our patients manage their mental health. We are committed to empowering individuals and families towards improved well-being and are here to support you on your journey with understanding, expertise, and empathy. We strive to create a space where everyone feels welcome and valued. Our approach to care is grounded in collaboration, culture sensitivity, and is personalized to you. We are dedicated to helping you achieve your goals.
We offer a range of services including diagnosing and medication management for CHILDREN, ADOLESCENT, and ADULT populations. We work collaboratively to provide personalized treatment plans tailored to your specific needs. We treat ADHD, Depression, Anxiety, Mood disorders, and more. In-person appointments available with virtual appointments available for established clients.
We accept major insurance plans, including Aetna, Cigna, First Choice Health, United Behavioral Health, Blue Cross Blue Shield, Regence, Medicaid including Coordinated Care, United Healthcare of Washington, Community Health Plan of Washington (CHPW), Wellpoint, Molina. Contact us to find out if we accept your insurance plan.
Ready to get started? Contact us to schedule an appointment or to learn more about our services.
Our office is conveniently locate in Yakima, WA at 32 N 3rd St., Ste 435

Collette Flinkfelt is a Board certified Psychiatric mental health nurse practitioner. She has a strong focus on children’s mental health but sees all ages between 5 and 59. Collette is a proud local provider, offering tele-health appointments to established patients.
Collette raised a large family of 6 children, who went on to have their own children, giving her 19 grandchildren. She grew up on the west side of Washington and moved to the Yakima valley in 2003. She earned her master’s of science in nursing degree at Gonzaga University.
“I am dedicated to providing compassionate and expert care for those navigating the complexities of mental health. With a commitment to empowering individuals and families towards improved well-being, I'm here to support your journey with understanding, expertise, and empathy. I strive to create a space where everyone feels welcome and valued. My approach to care is grounded in collaboration, cultural sensitivity, and is personalized to you. I strive to create an environment where clients/families from all backgrounds can openly discuss their concerns, experiences, and goals. I look forward to participating in your well-being needs.
I manage all classes of psychiatric medications, including stimulants, SSRIs/SNRIs, mood stabilizers, and other medications. For children, adolescent, and adult populations, some of my areas of expertise include DMDD, ADHD, Depression, Anxiety, Mood disorders to name a few.
Your journey is uniquely your own. I am dedicated to providing you compassionate, expert, evidence-based care that's designed to your individual needs. Care that is delivered with understanding, expertise, and empathy. I invite you to come and openly discuss your concerns, experiences, and goals. I look forward to participating in your well-being needs.”
-Collette Flinkfelt
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