Rhiannon Armstrong, Psychiatric ARNP
Lilac City Psychiatry, LLC 509-872-5009 r.armstrong@corspokane.com
Areas of Focus: Depression, Anxiety Disorders, Bipolar Disorder, Mood Disorders, Trauma-Related Disorders, Personality Disorders
Works With: Adolescents (13+) & Adults
Services: Psychiatric Medication Management, Telepsychiatry
Insurance: In-network with select insurance plans
About Rhiannon:
Rhiannon is a board-certified Psychiatric Mental Health Nurse Practitioner who is passionate about helping individuals navigate mental health challenges through compassionate, collaborative care.
She believes in taking a holistic approach to mental health, recognizing the connection between mind, body, and spirit. Her work considers not only psychiatric symptoms but also lifestyle factors, self-care practices, and supportive relationships that contribute to overall well-being.
Rhiannon values creating a supportive, non-judgmental environment where patients feel heard and actively involved in their treatment. Through open communication and shared decision-making, she works alongside each individual to develop a treatment plan that reflects their unique needs and goals.
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Rhiannon approaches psychiatric medication management with an emphasis on individualized treatment, collaboration, and whole-person care.
She works with patients to understand their symptoms, treatment history, and personal goals while considering the lifestyle and environmental factors that may influence their mental health.
Her approach emphasizes:
Collaborative treatment planning and shared decision-making
Medication management tailored to individual needs
Attention to lifestyle, self-care, and overall well-being
Coordination with therapists and other healthcare professionals when appropriate
Ongoing assessment and adjustments to support treatment goals
Rhiannon also offers telepsychiatry services, providing patients with additional flexibility and accessibility in their care.
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Rhiannon provides psychiatric evaluation and medication management for adolescents ages 13 and older and adults experiencing a variety of mental health concerns, including:
Anxiety Disorders
Bipolar Disorder
Depression
Mood Disorders
Personality Disorders
Trauma-Related Disorders
Treatment recommendations are individualized based on each patient's symptoms, clinical history, and needs.
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Rhiannon is currently in-network with:
Aetna
Blue Cross Blue Shield
Cigna
LifeWise
Premera
Regence
UnitedHealthcare
Private pay is also accepted.
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Rhiannon earned her Master of Science in Nursing from Gonzaga University in 2019 and is a board-certified Psychiatric Mental Health Nurse Practitioner.
She brings approximately 10 years of experience in the mental health field, including five years working as a Behavioral Health Registered Nurse specializing in adolescent mental health before becoming a nurse practitioner.
Her clinical background includes working with acute mental illness and providing psychiatric care to adolescents and adults.
Important Prescribing Information
Medication may not be appropriate or recommended for every individual or condition. Michael Van Gelder provides psychiatric medication management and does not prescribe or manage non-psychiatric medications, including opioid medications or medications for pain management. Michael does not prescribe benzodiazepines.
If you are currently taking a controlled substance, please understand that continuation or refills are not guaranteed at your initial appointment. Prescribing decisions are made following a comprehensive assessment, which may include a clinical interview, review of your medical and medication history, and review of previous records when appropriate. Michael will work collaboratively with you to determine a safe and appropriate treatment plan based on your individual needs.
Ready to Get Started?
Rhiannon provides in-person appointments in Spokane, Washington, and telehealth throughout Washington State.
Looking for another provider? View Our Prescribers