TriWest Psychiatrists in Santa Ana, CA

Ligaya Resurreccion
Psychiatric Nurse Practitioner, PMHNP
Serves Area
Ligaya Resurreccion, PMHNP, helps adults navigate life’s challenges with compassionate, evidence-based psychiatric care and personalized medication management. Serving patients across California through LifeStance Health, she partners with individuals ages 18 and older who are seeking support. Her approach is collaborative and patient-centered, creating a space where clients feel heard, respected, and empowered in their mental health journey.Ligaya Resurreccion, PMHNP, helps adults navigate life’s challenges with compassionate, evidence-based psychiatric care and personalized medication management. Serving patients across California
Ligaya Resurreccion, PMHNP, helps adults navigate life’s challenges with compassionate, evidence-based psychiatric care and personalized medication management. Serving patients across California through LifeStance Health, she partners with individuals ages 18 and older who are seeking support. Her approach is collaborative and patient-centered, creating a space where clients feel heard, respected, and empowered in their mental health journey.Ligaya Resurreccion, PMHNP, helps adults navigate life’s challenges with compassionate, evidence-based psychiatric care and personalized medication management. Serving patients across California
(657) 679-5927 View (657) 679-5927
Simon Ordonez
Physician Assistant, PA-C
Online Only
Simon Ordonez is a certified physician assistant specializing in depression, anxiety, attention-deficit/hyperactivity disorder (ADHD), bipolar disorder, trauma/post-traumatic stress disorder (PTSD), eating disorders, and schizophrenia. Simon enjoys keeping up-to-date with the newest treatment modalities, ensuring his patients receive quality care.
Simon Ordonez is a certified physician assistant specializing in depression, anxiety, attention-deficit/hyperactivity disorder (ADHD), bipolar disorder, trauma/post-traumatic stress disorder (PTSD), eating disorders, and schizophrenia. Simon enjoys keeping up-to-date with the newest treatment modalities, ensuring his patients receive quality care.
(949) 751-1607 View (949) 751-1607
John Anthony Diya - Anew Era TMS & Psychiatry
Psychiatric Nurse Practitioner, PMHNP
Serves Area
John Anthony Diya is a board-certified Psychiatric Mental Health NP, certified by the American Nurses Credentialing Center. He graduated from Charles R. Drew University. He has over 9 years of experience in providing psychiatric care to patients of all ages. He began his career in healthcare as a Registered Nurse working in both the inpatient and outpatient settings.
John Anthony Diya is a board-certified Psychiatric Mental Health NP, certified by the American Nurses Credentialing Center. He graduated from Charles R. Drew University. He has over 9 years of experience in providing psychiatric care to patients of all ages. He began his career in healthcare as a Registered Nurse working in both the inpatient and outpatient settings.
(657) 385-7024 View (657) 385-7024
Sung Park
Physician Assistant, PA-C
Serves Area
Steve Park is an advanced-certified psychiatric physician assistant specializing in anxiety, depression, bipolar disorder, sleep and panic disorders, addiction, schizophrenia, grief, obsessive-compulsive disorder (OCD), psychosis, trauma/post-traumatic stress disorder (PTSD), hoarding disorder, and gender-related concerns. He provides culturally sensitive, mindfulness-based, and person-centered care.
Steve Park is an advanced-certified psychiatric physician assistant specializing in anxiety, depression, bipolar disorder, sleep and panic disorders, addiction, schizophrenia, grief, obsessive-compulsive disorder (OCD), psychosis, trauma/post-traumatic stress disorder (PTSD), hoarding disorder, and gender-related concerns. He provides culturally sensitive, mindfulness-based, and person-centered care.
(949) 996-0303 View (949) 996-0303
Dr. Heather Mak - Anew Era TMS & Psychiatry
Psychiatrist, MD
Serves Area
Dr. Heather Mak is a psychiatrist with experience in helping patients with issues like hyperactivity disorder, anxiety, bipolar disorder, post-traumatic stress disorder, and obsessive-compulsive disorder.
Dr. Heather Mak is a psychiatrist with experience in helping patients with issues like hyperactivity disorder, anxiety, bipolar disorder, post-traumatic stress disorder, and obsessive-compulsive disorder.
(657) 366-5298 View (657) 366-5298
Princess Dione Cortez
Psychiatric Nurse Practitioner, PMHNP
Serves Area
Passionate about supporting clients through life's complexities, Dione has a particular focus on addressing substance abuse, bipolar disorder, and sleep disorders. Her work with individuals struggling with addiction includes providing effective strategies for managing cravings and building healthier coping mechanisms. Additionally, her expertise in sleep disorders and insomnia helps patients restore restful sleep patterns, which is vital for overall well-being. Dione's practice also extends to working with specialized populations, including LGBTQ+ individuals, first responders, and military veterans.
Passionate about supporting clients through life's complexities, Dione has a particular focus on addressing substance abuse, bipolar disorder, and sleep disorders. Her work with individuals struggling with addiction includes providing effective strategies for managing cravings and building healthier coping mechanisms. Additionally, her expertise in sleep disorders and insomnia helps patients restore restful sleep patterns, which is vital for overall well-being. Dione's practice also extends to working with specialized populations, including LGBTQ+ individuals, first responders, and military veterans.
(657) 669-0664 View (657) 669-0664
Shalu Singh
Psychiatric Nurse Practitioner, PMHNP
1 Endorsed
Serves Area
Shalu Singh is a board-certified psychiatric mental health nurse practitioner who takes a collaborative, trauma-informed, and practical approach with the goal of helping patients feel understood. She specializes in depression, anxiety, and trauma/post-traumatic stress disorder (PTSD) and strives to develop tools and treatment plans that support lasting, real-world change for her patients.
Shalu Singh is a board-certified psychiatric mental health nurse practitioner who takes a collaborative, trauma-informed, and practical approach with the goal of helping patients feel understood. She specializes in depression, anxiety, and trauma/post-traumatic stress disorder (PTSD) and strives to develop tools and treatment plans that support lasting, real-world change for her patients.
(818) 532-0468 View (818) 532-0468
WellPsyche Medical Group
Psychiatrist
Serves Area
Do you Over-Think things? Over-Experience your emotions? Do you struggle to focus or complete tasks? Difficulty sleeping? Putting off your mental health is no longer an option! With over 75 clinical experts, WellPsyche and MediPsych providers provide Empathetic Psychotherapy and Personalized Medication Management services for Children, Adolescents, and Adults. 100% of our visits are conducted via Zoom, and we are available mornings, afternoons, and evenings. Meet with your psychiatrist from the privacy and convenience of home or work. We are simplifying the mental health experience so you can become the best version of you!
Do you Over-Think things? Over-Experience your emotions? Do you struggle to focus or complete tasks? Difficulty sleeping? Putting off your mental health is no longer an option! With over 75 clinical experts, WellPsyche and MediPsych providers provide Empathetic Psychotherapy and Personalized Medication Management services for Children, Adolescents, and Adults. 100% of our visits are conducted via Zoom, and we are available mornings, afternoons, and evenings. Meet with your psychiatrist from the privacy and convenience of home or work. We are simplifying the mental health experience so you can become the best version of you!
(714) 975-5197 View (714) 975-5197
Nazish Siddiqui
Psychiatric Nurse Practitioner, PMHNP
Serves Area
Nazish Siddiqui is a board certified psychiatric mental health nurse practitioner who has worked in a variety of settings, including inpatient, private practice, and partial hospitalization programs. Nazish approaches care in a warm, non-judgmental manner and treats a variety of conditions, including depression, anxiety, and bipolar disorder.
Nazish Siddiqui is a board certified psychiatric mental health nurse practitioner who has worked in a variety of settings, including inpatient, private practice, and partial hospitalization programs. Nazish approaches care in a warm, non-judgmental manner and treats a variety of conditions, including depression, anxiety, and bipolar disorder.
(949) 334-2719 View (949) 334-2719
Progeny Psychiatric Clinic
Psychiatrist
Serves Area
Ideal clients are those that are dealing with mental health issue, such as anxiety, depression, ADHD, Bi-Polar, and many more. The goal is to help them become stable and function as normal as possible in their daily lives. Patients want to be helped to become independent in society.
Ideal clients are those that are dealing with mental health issue, such as anxiety, depression, ADHD, Bi-Polar, and many more. The goal is to help them become stable and function as normal as possible in their daily lives. Patients want to be helped to become independent in society.
(657) 345-2759 View (657) 345-2759
Sahil Mehta
Psychiatric Nurse Practitioner, MSN, PMHNP, BC
4 Endorsed
Serves Area
I believe every client is unique and every client is ideal. People often come to me feeling overwhelmed, stuck, or unsure of how to move forward, but also hopeful for change. Whether you're facing emotional challenges, navigating transitions, or simply feeling unlike yourself, I offer a space where you can feel safe, heard, and supported. Together, we’ll build a collaborative and personalized approach to care—one that’s grounded in evidence-based practice, shaped by your values, and designed to support healing, growth, and lasting change.
I believe every client is unique and every client is ideal. People often come to me feeling overwhelmed, stuck, or unsure of how to move forward, but also hopeful for change. Whether you're facing emotional challenges, navigating transitions, or simply feeling unlike yourself, I offer a space where you can feel safe, heard, and supported. Together, we’ll build a collaborative and personalized approach to care—one that’s grounded in evidence-based practice, shaped by your values, and designed to support healing, growth, and lasting change.
(949) 775-0963 View (949) 775-0963
John Diya - Anew Era TMS & Psychiatry
Psychiatric Nurse Practitioner, ARNP
Online Only
*** ACCEPTING NEW PATIENTS WITH A WAIT TIME OF 1 WEEK OR LESS *** John Anthony Diya is a board-certified Psychiatric Mental Health NP, certified by the American Nurses Credentialing Center. He graduated from Charles R. Drew University.
*** ACCEPTING NEW PATIENTS WITH A WAIT TIME OF 1 WEEK OR LESS *** John Anthony Diya is a board-certified Psychiatric Mental Health NP, certified by the American Nurses Credentialing Center. He graduated from Charles R. Drew University.
(562) 278-0091 View (562) 278-0091
WellPsyche Medical Group
Psychiatrist
Serves Area
Do you Over-Think things? Over-Experience your emotions? Do you struggle to focus or complete tasks? Difficulty sleeping? Putting off your mental health is no longer an option! With over 75 clinical experts, WellPsyche and MediPsych providers provide Empathetic Psychotherapy and Personalized Medication Management services for Children, Adolescents, and Adults. 100% of our visits are conducted via Zoom, and we are available mornings, afternoons, and evenings. Meet with your psychiatrist from the privacy and convenience of home or work. We are simplifying the mental health experience so you can become the best version of you!
Do you Over-Think things? Over-Experience your emotions? Do you struggle to focus or complete tasks? Difficulty sleeping? Putting off your mental health is no longer an option! With over 75 clinical experts, WellPsyche and MediPsych providers provide Empathetic Psychotherapy and Personalized Medication Management services for Children, Adolescents, and Adults. 100% of our visits are conducted via Zoom, and we are available mornings, afternoons, and evenings. Meet with your psychiatrist from the privacy and convenience of home or work. We are simplifying the mental health experience so you can become the best version of you!
(858) 360-8333 View (858) 360-8333
Esther Choi
Psychiatric Nurse Practitioner, PMHNP
Serves Area
Esther Choi is a board certified psychiatric mental health nurse practitioner who is passionate about reducing mental health stigma and improving mental health literacy among different subpopulation groups.
Esther Choi is a board certified psychiatric mental health nurse practitioner who is passionate about reducing mental health stigma and improving mental health literacy among different subpopulation groups.
(949) 796-8173 View (949) 796-8173
Hannah Nguyen
Psychiatrist, MD
1 Endorsed
Serves Area
Dr. Han "Hannah" Nguyen works with children, adolescents, and adults experiencing depression, anxiety, ADHD, bipolar disorder, OCD, trauma, psychosis, substance use disorders, and neurodevelopmental conditions, such as autism spectrum disorder and intellectual disability. Her ideal clients are seeking compassionate, culturally informed care and want to better understand their challenges, improve daily functioning, strengthen relationships, and build a more fulfilling life.
Dr. Han "Hannah" Nguyen works with children, adolescents, and adults experiencing depression, anxiety, ADHD, bipolar disorder, OCD, trauma, psychosis, substance use disorders, and neurodevelopmental conditions, such as autism spectrum disorder and intellectual disability. Her ideal clients are seeking compassionate, culturally informed care and want to better understand their challenges, improve daily functioning, strengthen relationships, and build a more fulfilling life.
(949) 461-2617 View (949) 461-2617
Ascend TMS Center
Psychiatric Nurse Practitioner, PMHNP
1 Endorsed
Serves Area
Ascend TMS Center offers specialized care for Depression, Anxiety, OCD, and other treatment-resistant mental health conditions, utilizing Transcranial Magnetic Stimulation (TMS). This non-invasive and pain-free technique, which can be an alternative or a supplement to conventional therapies, uses mild magnetic fields to target and activate brain areas linked to mental well-being. Our approach blends compassionate care with innovative TMS therapy, tailored to meet the distinct needs of each condition we treat. We focus on more than symptom relief; our goal is to help clients rediscover joy, regain control, and reconnect with life.
Ascend TMS Center offers specialized care for Depression, Anxiety, OCD, and other treatment-resistant mental health conditions, utilizing Transcranial Magnetic Stimulation (TMS). This non-invasive and pain-free technique, which can be an alternative or a supplement to conventional therapies, uses mild magnetic fields to target and activate brain areas linked to mental well-being. Our approach blends compassionate care with innovative TMS therapy, tailored to meet the distinct needs of each condition we treat. We focus on more than symptom relief; our goal is to help clients rediscover joy, regain control, and reconnect with life.
(949) 418-5028 View (949) 418-5028
Dexter Jones MSN, PMHN - Anew Era TMS & Psychiatry
Psychiatric Nurse Practitioner, MSN, PMHN, BC
Serves Area
Dexter has more than 16 years of dedicated experience in the medical field, including three years as a Board-Certified Psychiatric Nurse Practitioner in California. Throughout his career, he has cultivated a strong foundation in primary psychiatric care, including acute, inpatient, and outpatient mental health. His many years of experience have equipped him with the knowledge and skills to deliver comprehensive mental healthcare to patients of diverse backgrounds and needs. Dexter uses a combination of medication management and supportive therapy to work towards the goals of decreasing suffering and improving quality of life.
Dexter has more than 16 years of dedicated experience in the medical field, including three years as a Board-Certified Psychiatric Nurse Practitioner in California. Throughout his career, he has cultivated a strong foundation in primary psychiatric care, including acute, inpatient, and outpatient mental health. His many years of experience have equipped him with the knowledge and skills to deliver comprehensive mental healthcare to patients of diverse backgrounds and needs. Dexter uses a combination of medication management and supportive therapy to work towards the goals of decreasing suffering and improving quality of life.
(424) 999-0762 View (424) 999-0762
Mae Caragay
Physician Assistant, PA-C
Serves Area
Mae Caragay is a certified physician assistant, with extensive experience in family medicine, addiction medicine, and psychiatry. Mae works with patients to create a treatment plan centered around collaboration and empathy in order to provide the highest quality of care.
Mae Caragay is a certified physician assistant, with extensive experience in family medicine, addiction medicine, and psychiatry. Mae works with patients to create a treatment plan centered around collaboration and empathy in order to provide the highest quality of care.
(949) 997-0356 View (949) 997-0356
Jonathan Shaywitz
Psychiatrist, MD
1 Endorsed
Serves Area
Dr. Jonathan Shaywitz is a board-certified psychiatrist who works with adults experiencing anxiety, depression, bipolar disorder, OCD, ADHD, schizophrenia, and treatment-resistant mood disorders. He partners with patients to better understand their symptoms, improve daily functioning, and achieve lasting emotional wellness through compassionate, evidence-based psychiatric care tailored to their individual goals.
Dr. Jonathan Shaywitz is a board-certified psychiatrist who works with adults experiencing anxiety, depression, bipolar disorder, OCD, ADHD, schizophrenia, and treatment-resistant mood disorders. He partners with patients to better understand their symptoms, improve daily functioning, and achieve lasting emotional wellness through compassionate, evidence-based psychiatric care tailored to their individual goals.
(949) 606-8626 View (949) 606-8626
Lydia Owuor
Psychiatric Nurse Practitioner, PMHNP
Online Only
I'm a board-certified Psychiatric Nurse Practitioner. Driven to enhance my understanding of mental health care, I pursued additional training and collaborated with interdisciplinary teams to deliver comprehensive care to patients with complex psychiatric conditions.
I'm a board-certified Psychiatric Nurse Practitioner. Driven to enhance my understanding of mental health care, I pursued additional training and collaborated with interdisciplinary teams to deliver comprehensive care to patients with complex psychiatric conditions.
(877) 515-8113 View (877) 515-8113

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