Shelley Sellinger, MD

Ashlyn Tellers is a board-certified Psychiatric Mental Health Nurse Practitioner. She earned her nursing degree with an emphasis in psychiatry in 2020 from the University of Arizona. With over twelve years of experience, she has cared for mental health patients across long-term care, inpatient, residential, and outpatient settings.

Ashlyn specializes in treating adults with depression, anxiety disorders, bipolar disorder, ADHD, and OCD through medication management and supportive therapy. She emphasizes patient education and works collaboratively to build therapeutic and safe treatment plans. She encourages open discussions about past mental health history and current stressors to help identify root causes and develop healthy coping strategies. When appropriate, she refers patients to therapists for more specialized care.

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What has motivated Dr. Wheatley over the course of her career as a caregiver? Dr. Wheatley is a native Houstonian who grew up in a working-class community. Through curiosity and hard work, she was able to attend a university that included people of vastly different life experiences. She was molded by both communities to appreciate the commonalities of humanity. That broad exposure extended her empathetic spectrum to grasp the needs of the American diaspora.

Dr. Wheatley uses a biopsychosocial approach to evaluate the patient. She gathers patient history with a mindset that considers the neuroscience that chemically shapes mood, thoughts, and behavior. She is able to uncover factors that can inhibit psychological growth and development. She has experience in seeing how the social conditions of the “then” can influence the resiliency of the “now”. Dr. Wheatley appreciates, and is proficient in, advances in technology, but prioritizes the analog relationship between doctor and patient.

Meeting people where they are. It is an old trope, but describes how one allows a patient to set the path forward. An open-ended interview is conducted with an open mind towards resolution. When being evaluated and treated by Dr. Wheatley, a patient can expect to be met in a cordial but professional manner. Treatments are discussed and considered based on the mental state of the patient and the clinical efficacy and scientific evidence of benefit. The patient is invited to ask questions and consider whether they wish to pursue the suggested treatment plan.

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Wayne R. McIntosh, PMHNP-BC, is a dedicated mental health professional with over a decade of experience in psychiatric care. He earned his advanced nursing degree with distinction from Arizona State University and also holds a Bachelor of Science in Nursing from Grand Canyon University and an Associate of Science in Nursing from Harry S. Truman College. He has been a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) since 2015.

Wayne specializes in family-centered care, working with individuals aged 18 to 65. Whether supporting patients through anxiety, depression, ADHD, or life transitions, he develops personalized diagnostic and treatment plans that may include therapy, coping strategies, and, when appropriate, medication. His approach emphasizes clear communication and collaboration, empowering patients to understand their challenges, apply practical tools, and achieve lasting change.

Throughout his career, Wayne has served as a Psychiatric Nurse Practitioner and Associate Director of Medical Services, leading multidisciplinary teams and promoting accessible, high-quality care. As a Faculty Associate at Arizona State University, he has mentored future nurse leaders, focusing on clinical excellence and patient advocacy. His military background and volunteer work further reflect his commitment to serving diverse populations with compassion and respect.

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Dr. Mathews is an adult psychiatrist who works with young adults and adults struggling with anxiety and depressive disorders. She uses a compassionate, non-judgmental, and reflective approach to listening and working with clients. Dr. Mathews' practice focuses on medication management, offered in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Mathews completed medical school at Stony Brook University School of Medicine where she also earned her masters in Medical Humanities, Compassionate Care, and Bioethics. She completed her adult psychiatry residency training program at Montefiore/Albert Einstein College of Medicine. The philosophy of Dr. Mathews' practice is to help promote each individual's natural capacity for healing. She ultimately strives to help clients create rich and meaningful lives while also offering mindfulness skills to empower clients to effectively cope with the pain and suffering that life can bring.

Ashley LaBanca provides medication management and supportive psychotherapy services. She has worked in mental health for over 12 years. A graduate of the University of North Dakota, she began her career in an outpatient setting, later transitioning into a lead nurse practitioner role before moving into telehealth services. Her goal is to reach individuals in need when in-person care is not feasible. Ashley lives in North Dakota with her family and enjoys traveling, reading, and spending quality time with them.

Ashley views medication as a tool rather than a cure. She incorporates alternative treatments by assessing physical health, exploring natural alternatives to medication, focusing on nutrition, and helping clients develop coping skills to manage daily stressors. Her guiding principle is the integration of therapy and medication management to support healing and growth. She encourages clients to be active participants in their treatment, fostering a collaborative, respectful, and open therapeutic relationship.

Ashley tailors her collaborative approach to each individual’s needs. She draws from Dialectical Behavioral Therapy (DBT), Cognitive Behavioral Therapy (CBT), and other treatment modalities, combining them with evidence-based prescribing to create personalized care plans. She also considers the social dimensions of mental health, addressing relationships, self-esteem, and internal healing.

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Dr. Peter Szeibel is board certified in adult psychiatry and has been practicing for over 36 years. His practice has focused primarily on medication management within the context of a supportive psychotherapeutic relationship. He also utilizes cognitive behavioral techniques. If the patient requires more intensive psychotherapy, Dr. Szeibel refers the patient to a therapist and collaborates with the therapist. Dr. Szeibel has experience in treating Depressive Disorders, PTSD, Panic Disorder, OCD, Bipolar Disorder, ADHD, and many other conditions. He feels his personal strengths include his inquisitiveness, scientific curiosity, and his desire to understand his patients better. Dr. Szeibel was born in Hungary, just a few months before the Hungarian Revolution against the Soviets broke out in 1956. He and his family fled under difficult circumstances and immigrated to the United States. Dr. Szeibel grew up in New York City. He attended The Bronx High School of Science, followed by Columbia University for his B.A., where he took a double major in chemistry and music. After obtaining his M.D. from S.U.N.Y in Syracuse, he returned to New York City for residency and fellowship training. During this time he won the Bendheim Fellowship Award at Cohen Children's Medical Center for his research study which examined the effects of background music on the academic performance of children with ADHD. His current areas of interest include adult ADHD, psychiatric and medical co-morbidities, and the LGBTQ population.