Neena Mathew, PMHNP

Dr. S. Taylor Williams is a psychiatrist with Talkiatry. She is board-certified in psychiatry and has been practicing over 14 years. Dr. Williams received her MD from the University of Alabama School of Medicine at UAB. She completed her psychiatry residency at the University of Tennessee Health Science Center. Prior to joining Talkiatry, she held an academic appointment at UTHSC as Assistant Professor of Psychiatry and was the Clinical Director of the Memphis Mental Health Institute. She specializes in the treatment of young adults and LGBTQ patients. Her practice focuses on medication management.‍

Dr. Candice Hacker is a board-certified Psychiatrist at Talkiatry. She completed her Psychiatry residency and a fellowship in Consultation Liaison Psychiatry at Mount Sinai/St. Luke's Hospital. She is passionate about a holistic approach to patient care, trained in psychosomatic medicine, and she has a deep appreciation for the intricate connection between the mind and body. With over 20 years of experience, Dr. Hacker has facilitated excellent outcomes in the treatment of various mental health conditions, including anxiety disorders, mood disorders, and trauma-related conditions. Dr. Hacker believes in creating a safe, nurturing and non-judgmental environment where patients can openly explore their emotions and experiences. By integrating evidence-based psycho-pharmacological modalities with mindfulness and cognitive-behavioral techniques, she empowers her patients to challenge a negative mindset and reach their goals. Beyond her clinical practice, Dr. Hacker is deeply committed to community mental health advocacy and the destigmatization of mental illness.

Background and credentials

Dr. Sinner is board-certified in Psychiatry. He completed his psychiatry residency training at Dartmouth-Hitchcock Medical Center. With over 14 years of experience, he has worked in a variety of settings, including five years in inpatient psychiatry in Vermont, where he served as Medical Director for a state hospital psychiatric unit and taught medical students. He then spent five years working in an outpatient community mental health center in Pennsylvania before transitioning to telepsychiatry, providing care to individuals in Pennsylvania, Florida, and New York.

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Treatment approach

Dr. Sinner employs a collaborative, patient-centered approach, tailoring treatment plans to meet each individual's specific needs. His practice integrates pharmacotherapy with cognitive behavioral therapy (CBT) and supportive therapy as needed. He specializes in treating a wide range of psychiatric conditions, including depression, bipolar disorder, anxiety, ADHD, neuropsychiatric disorders, developmental disorders, and personality disorders. His philosophy is to provide personalized care that makes a meaningful impact at different stages of a patient’s life.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation focused on understanding their mental health concerns, history, and treatment goals. Dr. Sinner takes a compassionate and collaborative approach, working closely with patients to create individualized treatment plans. He ensures that each patient receives a balanced and effective combination of medication management and therapeutic interventions suited to their unique needs.

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Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

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Dr. Nguyen is a board-certified psychiatrist in General Adult Psychiatry and board-eligible in Child and Adolescent Psychiatry. She completed her undergraduate studies at the University of Colorado and earned her medical degree from the University of Colorado School of Medicine. Dr. Nguyen completed her adult general psychiatry training at the HCA HealthOne Psychiatry Residency Program in Colorado and pursued specialized training in Child and Adolescent Psychiatry at the University of New Mexico.

She has experience in treating a wide range of psychiatric conditions, including depression, anxiety, post-traumatic stress disorder, attention-deficit/hyperactivity disorder, and obsessive-compulsive and related disorders. Also, Dr. Nguyen has a special interest in
working with patients with complex trauma histories.

With additional training in integrative medicine psychiatry, Dr. Nguyen takes a holistic approach to patient care, blending evidence-based treatments with complementary therapies to enhance overall mental well-being. Known for her approachable style, Dr. Nguyen strives to create a supportive and understanding environment for her patients.

Nathan Roberson is a Licensed Clinical Mental Health Counselor in North Carolina and a Licensed Professional Counselor in South Carolina and Texas. Nathan has a Masters in Counseling from Southern Methodist University. He has worked in primarily in outpatient settings that focused on mental health and substance use.

Nathan enjoys helping adults identify what is holding them back from creating the life that they want and working together to overcome the feelings, limiting beliefs, traumas, etc, that stand in the way of that goal.  

When working with clients, the approach Nathan will use varies with what is needed to help address the issues at hand. During the sessions, Nathan will draw upon CBT, Solution-Focused, psychodynamic, and reality theory, among others. Nathan believes having the flexibility to use the best tool for the job helps because every client is different and will respond differently to a specific approach.

Wayne R. McIntosh, DNP, PMHNP-BC, is a dedicated mental health professional with over a decade of experience in psychiatric care. A graduate of Arizona State University, where he earned his Doctor of Nursing Practice with distinction, Wayne 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 is certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and has been actively practicing since 2015.

Wayne specializes in family-centered care, working with individuals aged 18 to 65. Whether navigating anxiety, depression, ADHD, or life changes, he guides patients through tailored diagnostic and treatment plans that may include therapy, coping strategies, and, when appropriate, medication. With a focus on clear communication and collaboration, he empowers patients in their mental health journey, helping them understand their challenges, implement practical tools for improvement, and create lasting change.

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