Bipolar disorder therapists & psychiatrists in Vacaville, CA

Hi, I’m Mercy Nyeche, DNP, PMHNP-BC. I’m a board-certified Psychiatric Mental Health Nurse Practitioner dedicated to helping adults regain clarity, confidence, and emotional balance.

Reaching out for support can feel overwhelming especially when you’re used to being the strong one for everyone else. Whether you’re navigating anxiety, depression, burnout, life transitions, or feeling stuck in patterns that no longer serve you, you don’t have to do it alone.

My approach is compassionate, collaborative, and evidence-based. I take time to truly listen, understand your goals, and create a personalized treatment plan that fits your life, not just your symptoms.

Please note that I do not provide disability paperwork, leave of absence documentation, FMLA forms, legal letters, school accommodation letters, or other administrative forms. The only documentation I provide is a work excuse note for the date of your appointment and, when clinically appropriate based on my evaluation and professional judgment, up to three (3) days off from work. If you require any of the services or documentation listed above, I kindly ask that you schedule with another provider who offers those services. Thank you for your understanding and for helping ensure that your healthcare needs are matched with the appropriate provider.

Nice to meet you!

If you’ve been dealing with depression, anxiety, panic, sleep problems, or mood swings, you may feel worn down, stuck, or unsure what to try next. You want relief, but also clear answers, practical options, and someone who takes your concerns seriously. I work with young adults, adults, and seniors who are ready to better understand what’s happening and take steady steps toward feeling more balanced and in control of their mental health.

I am currently a licensed psychologist in California, having previously worked as a psychotherapist under supervision for over 14 years. As an independent practitioner, I am accepting new clients, both in person and by remote means.

I seem to work especially well with younger and middle-aged people who are creatively inclined and having difficulty with self-realization and/or interpersonal relationships, from important relationships to everyday interactions with others. In the past, I have worked in community-based and private addiction recovery settings across a wide demographic. I specialize in trauma informed treatment that includes PTSD, depression, anxiety and phobias.

I seem to work especially well with younger and middle-aged people who are creatively inclined and having difficulty with self-realization and/or interpersonal relationships, from important relationships to everyday interactions with others.

Vanessa Diaz is a board-certified, licensed provider who offers expert mental health care for anxiety, depression, ADHD, PTSD, bipolar disorder, stressful life events, and many more conditions. Her goal is to help her clients live their best lives using modern, evidence-based solutions.

I am a board-certified nurse practitioner with many years of experience in healthcare, including primary care, psychiatric mental health, leadership, and wellness-based practice. My background has allowed me to work with individuals facing a wide range of emotional, behavioral, and medical concerns, and I understand how closely mental health and physical health are connected.

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.

If you are struggling with ADHD and/or symptoms of anxiety or depression or are dealing with difficult relationship issues or life transitions, I could be the therapist for you.