Addiction therapists & psychiatrists in Petaluma, CA

Georgia Barnes, MSN, FNP-C, PMHNP-BC

I am a dual board-certified Advanced Practice Registered Nurse (APRN) with more than 25 years of clinical experience and board certifications as both a Family Nurse Practitioner and Psychiatric Mental Health Nurse Practitioner. I provide compassionate, evidence-based mental health care for adolescents and adults experiencing anxiety, depression, PTSD, ADHD, mood disorders, and other psychiatric conditions through personalized medication management and supportive psychotherapy.

I believe meaningful mental health care begins with trust, respect, and collaboration. My approach is patient-centered, recognizing that every individual's experiences, strengths, and goals are unique. I work closely with each client to develop a personalized treatment plan that promotes emotional wellness, resilience, and long-term recovery.

My priority is to create a safe, welcoming, and nonjudgmental environment where you feel heard, valued, and empowered to participate in your care. Together, we focus not only on reducing symptoms but also on building healthy coping strategies, restoring balance, and improving overall quality of life. Whether you're facing anxiety, depression, trauma, mood disorders, ADHD, or co-occurring substance use concerns, I am committed to providing thoughtful, evidence-based care that supports your journey toward lasting wellness.

I'm a dedicated therapist who strives to offer clients quality care that’s centered around my professional competence, firm adherence to legal and ethical standards, and continual expansion in my knowledge of the practice. My passion for learning about the human psyche and behavior is a large part of why I chose to work in this profession.

I earned my master’s degree in social work from California State University of Long Beach. I’ve received training and supervision in therapeutic interventions including cognitive behavior therapy, motivational interviewing, psychodynamic and dialectical behavior therapy techniques. I have experience in multiple settings including partial hospitalization programs, intensive outpatient programs, and non-profit organizations. I’ve worked with a range of populations including unhoused individuals, adults struggling with substance abuse, and clients with a range of mental health related issues such as anxiety, depression, and PTSD.

Since 2010, I have worked with children to older adults from many different backgrounds, cultures, lifestyles and careers. Before dedicating my life to psychology, I worked in medicine and multiple other professions. Along with my California Doctoral education, I was also educated in England, Austria, France, Switzerland and New Zealand. I am originally from Wisconsin.

• Outstanding Patient Reviews - Google reviews (Access Psych Meds)
• Experienced Mental Health Provider (13 years) assisting clients with ADHD (adult) Anxiety Depression Chronic Pain Chronic Sleep problems Mood disorder PTSD: Military combat, childhood & sexual trauma Alcohol Use Disorder
• Dual Master’s Prepared
• ANCC Dual Board Certified - Psych Mental Health Nurse Practitioner and Clinical Nurse Specialist
• Veteran 22 yrs retired US Navy Commander/O-5
• Licensed in 5 States - AZ, CA, OR, MD, WA

Hi, I’m Stephanie, PhD, LCSW—a licensed clinical social worker with a passion for helping people feel more grounded, empowered, and connected in their lives. I’ve been working in the mental health field for several years, working with adults and young adults who are looking to improve their mental health, navigate life’s challenges, or gain a deeper understanding of themselves