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

Trained in a State Hospital in a borough in New York City

As a Board-Certified Psychiatric Mental Health Nurse Practitioner with over a decade of clinical experience, I bring something distinctive to mental health care: a research-informed approach grounded in real-world compassion. My background as a Sub-Investigator in psychiatric trials keeps me current with the latest treatment innovations, while my Master's from Western University of Health Sciences and ongoing Doctoral studies ensure I'm always expanding my expertise.

I specialize in the conditions that require specialized understanding: ADHD, autism, complex patients, OCD, personality disorders, PTSD/trauma, schizophrenia/psychosis disorders, and substance use disorders, alongside comprehensive treatment for depression, anxiety, panic, mood disorders, and bipolar disorder. What excites me about this work is that every client teaches me something new about resilience and recovery.

My clinical experience spans diverse settings, from outpatient care to cutting-edge research, giving me a unique perspective on evidence-based treatment. I combine thorough psychiatric evaluations using DSM-5 criteria with personalized medication management, always staying current with the latest advances in psychiatric care.

What I want you to know is this: your mental health journey matters to me both professionally and personally. I'm committed to providing care that's not just clinically excellent, but deeply respectful of your individual experience and goals.

IMPORTANT: For current availability, visit https://mentalhealthpractitioners.com/ or call or text us anytime at 415-968-6515—we make it super easy! Intake forms are required before your first appointment and will be emailed to you when you book online. You can text us your info or email us at [email protected]. Please be sure to send us a picture of your insurance information and photo ID!

I'm Christina Stelly, DNP, APRN, PMHNP-BC — a board-certified Psychiatric Mental Health Nurse Practitioner based in Martinez, CA. With over 15 years of clinical experience across inpatient psychiatry, maternal health, and advanced practice, I am deeply committed to delivering compassionate, evidence-based mental health care to every person I serve.

I specialize in treating schizophrenia, bipolar disorder, PTSD, depression, anxiety, and etc.

My academic background includes a Post-Certificate DNP in Psychiatric Mental Health from the University of Illinois Chicago, a Doctorate of Nurse Practice from Texas Tech University, and a Master of Science in Nursing from Touro University. I also completed an intensive NP residency focused on advanced psychiatric care, crisis stabilization, and forensic psychiatry, which further strengthened my clinical expertise.

Earlier in my career, I specialized in maternal mental health, serving as a Patient Care Director for high-risk obstetric populations and contributing to perinatal mental health policy at the state and national levels. This background gives me a uniquely broad, whole-person perspective on psychiatric care across the lifespan.

My approach is grounded in trauma-informed, individualized care. I take time to fully understand your history, concerns, and goals before collaboratively building a treatment plan tailored to you. I have also served on health policy committees and presented at national nursing conferences, reflecting my commitment to psychiatric care.

Hello, my name is Jeannie Umanzor, and I am a DNP prepared Family and Psychiatric Mental Health Nurse Prctitioner (PMHNP-BC) with 8 years of experience in the field. For the past 8 years, I have been dedicated to working in a federally qualified health clinic serving the unhoused population. I have encountered some of the most complex illnesses, addictions and mentally ill patients. In my role, I have had the privilege of seeing a wide variety of diseases and mental health disorders. My passion for mental health is unwavering, and I firmly believe in a whole person, patient-centered approach to care. This approach allows me to provide comprehensive and compassionate care to all of my patients, ensuring that their physical and mental well-being are prioritized. My experience in working with diverse populations has equipped me with the necessary skills and knowledge to address the unique needs of each individual I encounter. I am committed to continually expanding my expertise and staying up-to-date with the latest developments in the field in order to provide the highest quality care possible.

Hi, I’m Lorraine Nxumalo, a Psychiatric Mental Health Nurse Practitioner (PMHNP). Thank you for trusting me with your mental health care. My priority is to offer compassionate, evidence-based support tailored to your needs. I strive to create a positive, trusting environment where you feel safe to share openly about your experiences and challenges. Together, we’ll work honestly and transparently to develop a treatment plan that prioritizes your well-being and safety.

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.

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 believe that each person brings a unique story shaped by their life experiences, values, and cultural background. My clinical work has taken place across a variety of settings—including academic institutions, state hospitals, and community mental health clinics—which has helped me develop a flexible, respectful, and collaborative approach to care.

Welcome! I’m a dedicated Psychiatric Mental Health Nurse Practitioner (PMHNP), passionate about providing holistic, solution-oriented care to individuals of all ages. I earned my degree from the University of South Alabama, and my approach is rooted in compassion, active listening, and evidence-based treatment tailored to your unique needs.

I specialize in medication management and psychotherapy for a wide range of mental health conditions, including anxiety, depression, OCD, PTSD, bipolar disorder, ADHD, schizophrenia, and mood disorders. Whether you’re a child, young adult, or part of the older adult population, my goal is to create a safe, supportive space where healing and growth can thrive.

I believe in treating the whole person, not just symptoms. Together, we’ll develop a personalized plan to help you regain balance and move forward with confidence. I look forward to supporting you on your mental wellness journey!