Find a psychiatrist in Walnut Creek, CA — covered by insurance

Hello! I’m Dr. Andrew Lampley, a board-certified psychiatrist located in Southern California. I completed my medical training at UC Irvine (medical school), Kaiser Permanente (psychiatry residency), and Duke University (subspecialty). I am one of few psychiatrists in California experienced in providing ketamine treatment for mental health conditions (if indicated).

My style is collaborative, encouraging and rooted in evidence-based care. I offer medication management, life coaching, and supportive talk therapy. Many of my clients seek my service wanting more clarity, emotional stability, and tools they can apply in real life whether related to school, work, relationships, identity, or adjusting to a new community.

It's believed that more than 30-50 percent of individuals with mental health issues do not seek treatment or help. Congratulations, you have already taken a step in the right direction. Just like how a fractured bone causes discomfort and pain, poor mental health also causes day to day discomfort and malfunction. Continuing my analogy, one would expect to take medicine and use a cast to recover from such an injury. I will work with you to understand the situation that you are in and together we will come up with a safe and effective plan. My goal is to get you back up on your feet again without having to feel burdened by your mental health.

I believe therapy and psychiatric care should feel human, not clinical, rushed, or impersonal. My goal is to create a space where you feel genuinely heard, respected, and supported from the very first conversation. I take time to understand your story, your values, and what you want your life to look like, not just your symptoms.

I bring over a decade of experience working in mental health and addiction, and I use a balanced approach that blends evidence-based treatment with compassion and real connection. I do not believe in one-size-fits-all care. Your treatment is collaborative, flexible, and designed to support long-term growth, not just short-term relief.

Above all, you should know that you will not be treated like a diagnosis. You will be treated like a person.

Great to meet you! I am Tammy D. Moijueh, Psychiatric Mental Health Nurse Practitioner. I am pleased to serve with the best of my expertise and commitment to your well-being, offering training in outpatient psychiatry, ambulatory care, and telemedicine. My goal is to make communications easy, insightful, and encouraging. My Doctorate in Nursing Practice from Charles R. Drew University of Medicine and Science, combined with over 10 years of experience in the field, enhances behavioral health training and promotes the most positive treatment outcomes.

Hi, I’m Christina! I’m a double board-certified Family Nurse Practitioner and Psychiatric Mental Health Nurse Practitioner with over 12 years of experience in healthcare. I earned my bachelor’s degree from UCLA, master’s from Cal State LA, and post-graduate certification from National University.

Over the years, I’ve had the opportunity to work in family practice, urgent care, and emergency settings, which has given me a broad understanding of how physical and mental health are connected.

I specialize in supporting individuals who are dealing with depression, anxiety, PTSD, insomnia, mood disorders, and other mental health concerns.

My name is Luis Rosas, PMHNP-BC, and I’m a board-certified psychiatric nurse practitioner with a background in emergency nursing and mental health. I’ve spent years caring for patients in high-stress and crisis settings, which taught me the value of resilience, compassion, and meeting people where they are. I provide care for adults dealing with depression, anxiety, trauma, ADHD, bipolar disorder, and substance use challenges. My mission is to help clients regain balance, build strength, and move toward the life they want with clarity and confidence.

I know how heavy life can feel when you’re carrying pain, uncertainty, or self-doubt. But I believe, as a wise old wizard once said, “Happiness can be found even in the darkest of places, if one only remembers to turn on the light.” My role is to help you find that light again. I work with Gen Z and Millennial adults facing anxiety, depression, trauma, bipolar disorder, ADHD, and more. Through integrative, culturally responsive care, I combine evidence-based psychiatry with holistic strategies to help you feel heard, supported, and empowered to create a life that aligns with your true self.