Matthew Koller, MD

Dr. Kristin Ratz is a Board-Certified psychiatrist who is an expert in the diagnosis, treatment, and prevention of mental, emotional and behavioral disorders. She specializes in medication management combined with supportive therapy during 30-minute follow-up sessions. Dr. Ratz recognizes that each patient is unique and believes in an environment of collaboration, in which the patient and psychiatrist work together in order to develop the best individualized treatment plan. A California local, Dr. Ratz obtained her undergraduate education at University of California, Davis, graduating magna cum laude with a degree in Human Development. She then attended medical school at Loma Linda University School of Medicine, obtaining her Medical Doctorate. Following this, she completed her adult psychiatry residency training at the distinguished University of California, Irvine. Dr. Ratz has worked in a diverse range of healthcare settings, including county and community clinics, and is very experienced in telepsychiatry. She pays close attention to not only an individual's emotional state, but also their physical, spiritual, and social well-being, in order to provide her patients with exceptional holistic care.

Dr. Ciara Styles is a board-certified adult psychiatrist. Originally from Orlando, Florida, she’s a proud “Double-Gator” completing both her undergraduate and medical school training at the University of Florida. She completed her psychiatric residency at the Medical University of South Carolina, where she also recently finished a fellowship in child and adolescent psychiatry. She plans to complete her child board certification later this year. She enjoys treating patients of diverse and minoritized backgrounds. She has experience related to the special needs of the LGBTQ+ population, pregnant & postpartum people, and neurodivergent youth.

Dr. Styles employs a warm, patient-centered approach to treatment. She connects with patients by “matching their energy,” creating a foundation of trust before exploring difficult conversations. She also values input from loved ones and encourages collaborative appointments to optimize treatment outcomes.

Her process begins by creating a safe, supportive space where patients feel heard and respected. Early sessions focus on building rapport and gaining a clear understanding of the patient’s background, interpersonal relationships, and goals for treatment. From there, she collaborates with each patient to develop a personalized treatment plan aiming to use the lowest amount of medication needed to support and improve overall well-being.

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Dr. Michele Wiener is a psychiatrist with over 35 years of experience treating patients with mental health issues. Dr. Wiener's practice has historically focused on treating patients with varying mood disorders, anxiety disorders, psychotic disorders, and post-traumatic stress disorder, often complicated by substance use disorders. Dr. Wiener enjoys working with patients of all ages. She is skilled in both psychotherapy and medication management. While the emphasis will generally be on medication management, Dr Wiener will utilize insight-oriented, cognitive behavioral, and supportive psychotherapy skills to help her patients reach their treatment goals. She completed her internship at Bronx Lebanon Hospital, her residency at Montefiore Medical Center and a two-year fellowship in biological psychiatry, psychopharmacology and geriatric psychiatry at Albert Einstein College of Medicine. She served for over 20 years as Chief of Psychiatric Services for Behavioral Health Services at St John's Riverside Hospital Park Care Pavilion formerly Yonkers General Hospital. Here she was also able to enjoy teaching medical students from The Lake Erie College of Osteopathic Medicine in their psychiatric rotation. She has been Assistant Medical Director for Arms Acres, in Carmel, NY for over five years.

Dr. Dennis Valerstain is a board-certified Adult and Child and Adolescent Psychiatrist. After completing his undergraduate education at Emory University, he attended medical school at the Northwestern University Feinberg School of Medicine. He subsequently completed psychiatry residency at University of Miami/Jackson Health System and further sub-specialized at University of Miami/Jackson Health System with a fellowship in Child and Adolescent Psychiatry. Dr. Valerstain has had the opportunity of working with a diverse array of patients including children, adolescents, the severely mentally ill, veterans, and cancer patients across three distinct hospital systems. Dr. Valerstain has had varied clinical experiences in specialty inpatient psychiatry units, emergency psychiatry, consultation liaison psychiatry, psycho-oncology, and outpatient clinics via telemedicine and face to face interactions. Dr. Valerstain has experience working with patients of all ages, particularly those with depression, anxiety, bipolar disorder, ADHD, Tic disorders, substance use disorders, and more. Dr. Valerstain's practice focuses on medication management and also employs empathic listening, supportive psychotherapy techniques, and a comprehensive and methodological approach to his visits. Given his broad and diverse training experiences, he enjoys problem solving and working collaboratively with patients (and their families) to navigate their complex issues and jointly focusing on simple solutions to work towards improving their mental health.

Dr. Cheryl Person is the National Director of Clinical Quality at Talkiatry. She is board certified in general adult psychiatry and has been in practice for 20 years. Dr. Person focuses on medication management but believes that is only part of successful treatment. She will spend her time providing motivational interviewing or supportive therapy, and believes it is often critical to have a therapist as part of the treatment team. Dr. Person received her medical degree from Tulane University School of Medicine. She completed her psychiatric residency at Johns Hopkins and a psychiatric epidemiology fellowship at Johns Hopkins Bloomberg School of Public Health with a focus on disaster mental health. After relocating to Texas in 2010, she worked as Director of Psychiatric Services of a large safety-net hospital in Houston. Prior to Talkiatry, she most recently was the executive director/chief physician of a large university student health center and campus pharmacy. In addition to adult psychiatry, Dr. Person has worked extensively with victims of acute trauma and her primary focus is on working with patients who have anxiety and mood disorders.

Dr. Martha James is board-certified in general adult psychiatry and has more than twenty years of experience working with adults in a variety of mental health care settings including academia, inpatient psychiatric hospitals, outpatient clinics, university medical centers, VA medical centers, and community mental health settings. Dr. James received her medical degree from Duke University School of Medicine. She completed her psychiatric residency at the University of California, Los Angeles Neuropsychiatric Institute. Dr. James has experience treating adults with a variety of mental health problems including anxiety, mood disorders, trauma related disorders and psychotic disorders.

Dr. James is an experienced, open-minded psychiatrist who prioritizes empathy and understanding in her work. She recognizes that each individual's path to wellness is unique and strives to meet patients where they are in this process. Dr. James believes that while some individuals may benefit from treatment with medication management alone, psychotherapy is often important for treatment success. She encourages patients to participate in psychotherapy and believes a therapist can be a crucial part of the treatment team.

Dr. James uses a collaborative, patient-centered treatment approach with the goal of reducing mental pain and improving wellness so that patients are better able to pursue their unique personal and professional goals. She utilizes psychopharmacology, psychoeducation, and supportive and psychodynamic psychotherapy skills when working with patients.

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