Matthew Koller, MD

Dr. Anne Rohs is board certified in both adult and geriatric psychiatry and has practiced psychiatry for over 10 years. She has extensive experience treating critically ill patients in hospital settings. This experience allowed her to hone skills necessary to care for individuals with complex psychiatric illnesses complicated by medical conditions. Dr. Rohs' approach to care involves providing a consistent, empathic, non-judgmental space to develop and attain shared treatment goals. She is committed to developing a partnership that is always respectful of patients' points of view, and she utilizes this knowledge to inform treatment plans that are safe, effective, and agreeable to patients. At the same time, she is sensitive to financial or insurance coverage factors that may impact treatment. After completing residency training at Montefiore Medical Center, Dr. Rohs was invited to serve an additional year as Senior Chief Resident for its adult psychiatry residency training program. She spent the next year as a fellow in Geriatric Psychiatry before her appointment as an attending physician on Montefiore's acute psychiatric inpatient unit. During her training years, Dr. Rohs made several trips to Uganda to serve as an attending physician with the Doctors for Global Health Project. Dr. Rohs subsequently transferred to Bronx Psychiatric Center (BPC), where she treated inpatients and outpatients suffering from severe mental disorders. At BPC, she expanded her knowledge base and became an expert in advanced psychopharmacology. Dr. Rohs also spent time prior to joining Talkiatry as an attending physician at NYU Langone Hospital. Dr. Rohs specializes in treating a variety of psychiatric conditions including mood disorders, psychotic disorders, anxiety disorders, PTSD, and dementia. She is attuned to the direct and indirect mental health impact of the pandemic and its aftermath on patients of all ages. Dr. Rohs does not usually treat ADHD patients. For the small number of patients she treats who have ADHD, Dr. Rohs requires comprehensive testing, multiple follow ups, and a full medical workup before confirming a diagnosis to ensure appropriateness and safety of chosen treatment.Dr. Anne Rohs is board certified in both adult and geriatric psychiatry and has been in practice for over ten years. She has an extensive background working in hospital settings treating critically ill patients. This experience has helped hone her skills in caring for individuals with complex psychiatric illnesses complicated by medical conditions. Dr. Rohs’ approach is to provide a consistent, empathic, non judgmental space to develop and attain shared treatment goals. Dr. Rohs is committed to developing a partnership which is always respectful of patients’ points of view, and she utilizes this knowledge to inform treatment plans that are safe, effective and agreeable to patients. She is sensitive to financial or insurance coverage factors that may impact treatment.

After completing residency training at Montefiore Medical Center, Dr. Rohs was invited to serve an additional year as Senior Chief Resident for their adult psychiatry residency training program. She spent the following year as a fellow in Geriatric Psychiatry before being appointed an attending physician on Montefiore’s acute psychiatric inpatient unit. Dr. Rohs subsequently transferred to Bronx Psychiatric Center, where she treated patients suffering from severe mental disorders in both inpatient and outpatient settings. As a result, she further expanded her knowledge base and became an expert in advanced psychopharmacology. Prior to joining Talkiatry, Dr. Rohs served as an attending physician at NYU Langone Hospital. She has also been an attending physician for the Doctors for Global Health Project in Uganda.

Dr. Rohs specializes in treating a variety of psychiatric conditions including schizophrenia, bipolar disorder, generalized anxiety disorder, depression, and dementia. She is attuned to the direct and indirect mental health impact of the pandemic on patients of all ages. As the Covid situation evolves, Dr. Rohs is available to see patients either in the office or via telehealth platforms.

Dr. Rohs does not usually treat ADHD patients. For the small number of patients she treats who have ADHD, Dr. Rohs requires comprehensive testing, multiple follow ups, and a full medical workup before confirming a diagnosis to ensure appropriateness and safety of chosen treatment.

Dr. Cindy Rossetti is board certified in Adult Psychiatry. She has been practicing for over 13 years. Dr. Rossetti received her medical degree from The University of Arkansas for Medical Sciences in Little Rock. She completed her general psychiatry residency at the University of Kentucky in Lexington where she was chief resident. She worked at Eastern State Hospital in Kentucky treating severe and persistent mental illness. She spent most of her post-graduate time providing outpatient care in a rural and underserved area of Arkansas. Dr. Rossetti offers both medication management and therapy together in 30- and 45-minute follow-up visits. Dr. Rossetti enjoys treating adults of all ages. Her areas of interest include ADHD, Depression, Anxiety, and Autism in adults. She enjoys addressing areas such as personal growth, stress management and self-care. Her treatment is patient-centered and geared toward individual healing and wellness.

Dr. Ann Landowne is Board Certified in Adult, Adolescent, and Child Psychiatry. She has over thirty-five years of experience helping people of all ages cope with a wide range of problems. Dr. Landowne received her medical and psychiatric training at Albert Einstein College of Medicine and advanced training in psychotherapy at the Psychoanalytic Association of New York where she is on the faculty. She focuses on medication management and is holistic in her approach to people and the difficulties they face in life. She has expertise in the treatment of children and adolescents with emotional and behavioral problems, and people struggling with anxiety, depression, bipolar disorder, obsessive-compulsive symptoms, and eating disorders.�

Dr. Matthew Richter has experience practicing in outpatient and inpatient settings, as well as with military and confinement populations. He earned his medical degree from the Uniformed Services University of the Health Sciences and completed a psychiatry residency at Walter Reed National Military Medical Center, followed by a forensic psychiatry fellowship at the National Capital Consortium.

Dr. Richter fosters a safe, non-judgmental space where patients can explore their feelings and experiences freely, met with unconditional positive regard. He prioritizes active listening and deep empathy, ensuring each patient feels heard, understood, and valued as a unique individual throughout their treatment journey.

Initial sessions focus on a collaborative exploration of a patient’s history, current challenges, and core values, forming the foundation for a personalized treatment plan. Dr. Richter emphasizes shared decision-making, integrating therapeutic modalities—including medication when appropriate—while honoring patient autonomy and aligning with their vision for well-being.

Dr. Alexandra Held is a general psychiatrist who holds a bachelor’s degree in psychology. She completed her psychiatry training at the University of Miami Miller School of Medicine. Her clinical interests include mood and anxiety disorders, PTSD, and OCD. She is passionate about incorporating psychotherapeutic tools into her practice, including supportive psychotherapy.

Dr. Held takes a warm, collaborative, and nonjudgmental approach to care. Her goal is to create a safe and supportive space where patients feel heard and empowered to take an active role in their treatment, using a combination of supportive psychotherapy and medication management.

During the first few sessions, Dr. Held will take time to get to know the patient—their history, current concerns, and what they hope to achieve through treatment. Together, they will develop a comprehensive plan that may include psychiatric medications and supportive therapy. Follow-up visits are typically focused on checking in, adjusting treatments if necessary, and continuing to build on progress.

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Dr. Michael Petetit has worked with people from many different walks of life in clinics, hospitals, and online, providing evidence-based treatments for a wide range of mental health conditions. His professional journey is unique—he began his career as a research chemist, later earned a Master’s degree in psychology and worked with children, before pursuing his medical degree and completing a psychiatry residency.

Dr. Petetit approaches treatment as a true collaboration. He partners with patients to clarify goals and create individualized treatment plans that reflect their priorities and values. He strives to be non-judgmental, direct, and honest in his style, building a therapeutic relationship that supports open communication and trust.

Dr. Petetit begins with a thorough evaluation to understand each patient’s circumstances and challenges. From there, he works with patients to set and prioritize goals, review treatment options, and select a plan that feels both comfortable and practical. As treatment progresses, he regularly revisits and refines the plan, ensuring it remains effective and aligned with the patient’s evolving needs.