Derby Rousseau

  • Mountlake Terrace, Washington
  • Washington In-Person

Accepting New Patients

  • Medication Management
  • Psychiatric Evaluation and Treatment
  • Speaks Creole, English, French, Hatian
  • Serves Ages 21 to 70

Primary Specialties

  • Mood Disorders
  • Psychosis
  • Impulse Control Issues
  • ADHD (Attention-Deficit/Hyperactivity Disorder)
Also Experienced With
  • Anxiety
  • CBT (Cognitive Behavioral Therapy)
  • Depression
  • Emotionally Focused Therapy
  • Mindfulness
  • Motivational Interviewing
  • PTSD (Post-traumatic stress disorder)
  • Schizophrenia
  • Solution Focused
  • Stress


Are you in need of mental health services? Look no further! My name is Derby Rousseau. I am a board-certified psychiatric Nurse Practitioner. I hold a doctorate in nursing practice, and I have been practicing as a psychiatric nurse practitioner, since November 2020. My goal is to enhance access to high-quality, evidence-based, mental health services for those suffering from mood, anxiety, psychotic disorders, and ADHD. As such, I provide both in-person and telehealth appointments. My advanced practice philosophy emphasizes patient advocacy, and the provision of empathetic and patient-centered care.

I offer psychiatric services for Individuals, between 18 through 75 years old. I adopt a holistic and integrative treatment approach, to ensure safe, effective, and interactive services. I strive to work with each patient to develop individualized treatment strategies to improve their quality of life.

Insurances Accepted

  • Aetna
  • Cigna
  • Kaiser Permanente
  • Kaiser Washington Medicare Advantage
  • Medicare
  • Premera Blue Cross
  • Regence
  • United Healthcare