Find a psychiatrist in Ontario, CA — covered by insurance

Hello, my name is Alexander Valenzuela PMHNP. I specialize in psychiatric medication management and cognitive behavioral talk therapy. If you're struggling with your mental health and realize you want help, you don't have to do it alone. I am looking forward to starting the journey with you to help achieve your best self.

Dr. Aw primary interest is the intersection between mental and physical health. Dr. Aw’s philosophy, one does not exist outside of the other. Furthermore, Depression and anxiety in patients who are also suffering from medical issues feels significantly worse, and it is his goal to get patients on the road to recovery.

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.

I am a Board Certified Psychiatric Mental Health Nurse Practitioner who provides compassionate, patient-centered, and evidence-based care. I strive to create a safe, nonjudgmental space where you feel heard and supported. Together, we develop personalized treatment plans focused on your goals, well-being, and long-term mental health.

• 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

I am Sharon Atwood, a dual board-certified Psychiatric-Mental Health Nurse Practitioner and Adult Nurse Practitioner with over a decade of hands-on clinical experience serving adults and older adults. I hold active, unrestricted licenses in Florida, New York, California, and Idaho, and I provide care through both telehealth and outpatient settings.

My academic journey reflects a deep, enduring passion for mental health and human behavior. I earned my Bachelor of Arts in Psychology magna cum laude from Kean University, followed by a Master of Science in Nursing from Florida Atlantic University and a Post-Master's Certificate in Psychiatric-Mental Health from the University of Miami, both completed summa cum laude. I maintain board certifications through ANCC and AANP and hold active membership in the American Academy of Nurse Practitioners, the American Psychiatric Nurses Association, and the California Association of Nurse Practitioners.

My clinical background spans adult and geriatric primary care, integrated psychiatric services, crisis intervention, and outpatient psychiatric medication management. This diverse experience has prepared me to address a wide range of conditions with both skill and compassion, including depression, anxiety, PTSD, ADHD, bipolar disorder, panic disorder, OCD, schizophrenia, schizoaffective disorder, sleep disturbances, grief, anger management, and complex co-occurring presentations. I welcome individuals with treatment-resistant symptoms and those still searching for the right provider.

I specialize in working with adults aged 18 and older, helping to uncover root causes and develop plans for genuine growth. My approach is collaborative and evidence-based, combining psychiatric medication management with integrative wellness strategies that address sleep, nutrition, exercise, stress, and meaningful connection. I believe that expert care works best alongside healthy lifestyle habits and a sense of humor.

My path into psychiatry is both professional and personal. I moved to the U.S. alone at 17 while navigating complex PTSD and periods of misdiagnosis, which shaped how I understand mental health today. I began with a bachelor’s degree in psychology at Nankai University, then trained as a nurse and nurse practitioner at Charles R. Drew University and Purdue University.

Over the past 7 years, I’ve worked across medical and mental health settings, developing an approach that balances clinical precision with individualized care. I specialize in anxiety, depression, bipolar disorder, and complex PTSD, particularly for individuals who feel stuck or haven’t found relief in traditional treatment.

I’m licensed in California, Virginia, New York, Washington, and Oregon, and provide care via telehealth.