Peter Truong, MD

Michelle Hamilton is a Board-Certified Psychiatric Mental Health Nurse Practitioner with a special interest in the care of adults with mood disorders, anxiety disorders, and PTSD. She earned her Master of Science Degree from The Ohio State University and her Bachelor’s Degree in Nursing from The Oregon Health & Science University in Portland, Oregon. Her background includes both inpatient and outpatient psychiatry, crisis stabilization, and Consult-Liaison Psychiatry. Michelle has a passion for incorporating a holistic, evidenced-based approach to improve the mental health needs of each individual client through medication and therapy while emphasizing practical lifestyle changes such as the incorporation of exercise, healthy nutrition, and stress management techniques.

Matthew Twomey, PMHNP, earned his BSN and MSN from the Massachusetts General Hospital Institute of Health Professions School of Nursing. He began his career as an adult psychiatric nurse practitioner in community health centers before commissioning as an officer in the U.S. Army Nurse Corps. After five years of active duty, he continued caring for service members and families at Fort Bliss as a civilian provider for nearly six years. He now practices in the private sector, bringing broad clinical experience to diverse patient populations.

Matthew is skilled in psychopharmacology, evidence-based practice, and telehealth delivery. He combines strong clinical expertise with a patient-centered approach to improve outcomes and streamline care. Patients can expect thoughtful collaboration, clear communication, and treatment planning grounded in the latest research and tailored to their individual goals.

He specializes in psychopharmacology and precise medication management tailored to each patient’s unique needs. He also integrates supportive psychotherapy, motivational interviewing, psychoeducation, and cognitive behavioral therapy. Through active listening and mutual respect, he fosters a safe, supportive environment where patients feel heard, engaged, and empowered in their care.

Dr. Deringer is a psychiatrist with board certification in general psychiatry and addiction psychiatry. She earned her M.D. from the University of Michigan Medical School, and she completed her psychiatry residency and addiction psychiatry fellowship training at New York University. She has previously held faculty roles at New York University School of Medicine and Harvard Medical School. She has been involved in training the next generation of psychiatrists through her past work on the Program Director team for the MGH-McLean Psychiatry Residency Program. She has expertise in treating adults with mood disorders, anxiety disorders, substance use disorders, personality disorders, trauma, and ADHD.

Dr. Deringer cares deeply about understanding each patient's unique experience.  She recognizes that mental health symptoms are impacted by an individual's biological make-up, social situation, and their individual way of interacting with others in the world.  She will assess all of these factors and work with you to develop an appropriate treatment plan to help you feel better and meet your goals.  She incorporates supportive psychotherapy into all of her patient meetings; this may include discussions of the role of nutrition, exercise, and sleep habits in your overall well-being.

Dr. Deringer will begin the evaluation process with a thorough one-hour session in which we will discuss your current symptoms, your prior treatment history, your medical history, and your goals for treatment.  At the end of that session, she will begin to formulate her diagnostic impression and treatment recommendations.  Sometimes, the evaluation process may require more than one session, and it may be helpful for Dr. Deringer to gather information, with your permission, from prior treatment or to collaborate with your therapist if you have one.  Dr. Deringer will work with you on a medication treatment plan, if clinically indicated, to help you manage your symptoms and achieve your treatment goals.

Dr. Juliet Nichols has been a diplomate of the American Board of Psychiatry and Neurology since 2002 and has been practicing psychiatry for over 25 years. While an expert in psychopharmacology, Dr. Nichols has an integrative approach to treatment and she often incorporates psychotherapeutic techniques when appropriate, tailoring every treatment to each patient's individual needs. She completed her Psychiatry residency at Stony Brook-SUNY and Geriatric Psychiatry Fellowship at the Albert Einstein School of Medicine. Over the last two decades, Dr. Nichols served as an attending psychiatrist at JT Mather Hospital in Port Jefferson, NY, where she became proficient in delivering stellar psychiatric care in a variety of settings. She specializes in treating adult and geriatric mental illnesses, including: Depression, Anxiety Disorders (eg, OCD, Panic Disorder, GAD, PTSD), ADHD, and Cognitive Disorders in the elderly. Dr. Nichols strives to help her patients gain insights into their inner conflicts, unveil their strengths, accept their limitations, and build their coping skills. Her approach is dynamic, straightforward, and empathic so patients always feel safe, understood, and at ease. She engages the patient to be an active participant in treatment decision-making, creating a strong therapeutic alliance.‍

Dr. Suneja practices psychiatry through a collaborative, integrative, disability and healing justice-informed lens. He rejects oversimplified binaries, recognizing that healing requires embracing complexity. His training includes Columbia, Johns Hopkins, and a global mental health fellowship at UCSF. His clinical interests include anxiety, OCD, women’s reproductive mental health, climate stress, intergenerational trauma, immigrant and refugee mental health, and substance use concerns. Based in Tucson, he enjoys desert life, reading, baking, making art, and spending time with his two dogs.

Dr. Suneja provides a healing space that prioritizes each service user’s goals and lived experiences. His approach integrates psychiatric and psychotherapeutic practices with complementary, alternative, and natural therapies, as well as harm reduction. His approach is neurodivergence-, queer-, and gender-affirming as well as trauma-informed. Rejecting the binary of “mentally ill” vs. “mentally healthy,” he recognizes the mind, body, and soul’s inherent complexity.

Dr. Suneja tailors care to each service user. The first session explores goals, treatment options, and optimal meeting frequency. In many cases, visits are more frequent at the beginning of treatment and spaced out over time. He prefers visits at least every 4-6 weeks and integrates psychotherapy into all treatment plans, with many service users benefiting from ongoing deeper therapeutic work.

Donna is a Board-Certified Psychiatric Nurse Practitioner dedicated to breaking down mental health stigma and expanding access to compassionate, quality care. With over 20 years of nurse practitioner experience, she has supported patients and families through life’s emotional and physical challenges across outpatient, inpatient, and telepsychiatry settings. Donna is passionate about creating a safe, empowering space where individuals feel seen, heard, and valued on their mental health journey.

Donna helps patients become the best, healthiest version of themselves, both mentally and emotionally. She values open communication, mutual respect, and collaborative decision-making. Her treatment plans include medication management, healthy coping strategies, and tools to build self-awareness and resilience. Known for her warmth and empathy, Donna creates a judgment-free environment where every voice matters.

Donna begins by building trust through a compassionate, in-depth initial interview. Together with each patient, she develops a personalized treatment plan that blends medication management with lifestyle recommendations tailored to individual goals and values. Her holistic approach focuses not just on symptom relief, but on fostering lasting growth, confidence, and overall well-being.

‍