

Welcome! I’m Sarah Stewart, and I specialize in medication management for adults dealing with depression, anxiety, ADHD, bipolar disorder, and other mental health conditions. Together, we’ll explore your goals, strengths, and patterns to create a treatment plan that feels personal and empowering. My approach blends evidence-based care with compassion and collaboration—helping you find both immediate relief and lasting stability. You deserve care that meets you where you are and helps you move toward a more grounded, confident version of yourself.
I provide a safe, supportive, and nonjudgmental space where we work together to understand your unique needs and goals.
I believe healing happens when patients feel seen, heard, and empowered. My role is to walk alongside you, offering tools, education, and medication management tailored to your individual journey.
I completed my training as a PMHNP in California and have experience in both emergency and outpatient mental health settings.
If you’re ready to take the next step in your mental health journey, I look forward to working together to build a plan that supports your well-being.
As a Psychiatric Mental Health Nurse Practitioner (PMHNP), I’m trained at the graduate level in mental health care across the lifespan. I assess mental health concerns, diagnose conditions, prescribe and manage psychiatric medications, and provide psychotherapy. I also coordinate care with therapists, primary care providers, and other specialists as needed.
I am a doctorate- prepared, board-certified PMHNP who understands how difficult it can be to share your personal information. I offer a nonjudgmental space where you can feel safe, valued, and heard. Treatment provided is individualized based on your symptoms. I believe in a more holistic approach to care and am passionate about seeing you feel better. I partner with other psychiatric providers to ensure the best outcome. Choose today to begin your journey to wellness.
Hello, my name is Sherri Crespin, a board-certified Psychiatric Mental Health Nurse Practitioner passionate about providing integrated care for complex mental health challenges, including personality disorders, PTSD and trauma, schizophrenia and psychosis disorders, substance use disorders, ADHD, depression, anxiety, panic disorders, mood disorders, and bipolar conditions. My practice recognizes these conditions are interconnected in ways requiring specialized understanding.
I chose these specializations because I understand how trauma influences personality development, how ADHD complicates substance use recovery, how psychotic symptoms emerge during extreme stress, and how these complex interactions require providers who see the complete picture. Whether you're in recovery while managing other conditions, dealing with personality patterns that developed as survival mechanisms, or navigating multiple diagnoses, I bring the expertise needed for comprehensive care.
My approach emphasizes evidence-based treatments and the healing power of being truly understood. I recognize that seeking help for stigmatized conditions like personality disorders or psychosis takes tremendous courage, especially after negative experiences with providers. I create a therapeutic space where you can explore your experiences without judgment or shame.
You can expect a thorough assessment, personalized treatment planning, and consistent support throughout our work together. My goal is to help you build resilience, develop effective coping strategies, and thrive in your daily life.
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. You can text us your info or email us at [email protected]. Please send us a picture of your insurance information and photo ID!
20 year plus experience in varied mental health venues -- private office, inpatient and outpatient hospital settings, clinic-based case management.
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.
I’m a Psychiatric Mental Health Nurse Practitioner who provides thoughtful, personalized care in a supportive and nonjudgmental space. I take the time to truly understand your concerns, your goals, and what’s most important to you.
My approach is both clinical and holistic—while I offer medication management when appropriate, I also integrate lifestyle, sleep, and evidence-informed strategies to support your overall well-being.
I value a collaborative, high-touch experience where you feel informed, comfortable, and involved in every step of your care. My goal is to help you feel more balanced, clear, and like yourself again—with a plan that is both effective and sustainable.


Headway makes it easy to find support for your mental health — from finding the right provider, to understanding costs, to scheduling with ease.