Anastasia Ruiz, MD

Dr. Kira Posteraro is double board-certified in Adult and Addiction Psychiatry and has over 10 years of clinical experience. She completed her General Adult Psychiatry Residency at Allegheny General Hospital in Pittsburgh, PA, followed by a fellowship in Addiction Psychiatry at Beth Israel Medical Center in New York, NY.

Dr. Posteraro’s career has included serving as Director of Psychiatric Services at an addiction treatment center in Pittsburgh, PA, where she provided care across the full continuum of substance use disorder treatment—including residential, acute PHP, IOP, outpatient, and aftercare services. She later held the role of Section Chief Psychiatrist for the Center for Treatment of Addictive Disorders at VA Pittsburgh Healthcare System, offering both residential and outpatient services and acting as Medical Director for the SAMHSA-certified Opioid Treatment Program. Most recently, she served as Chief of Psychiatry for the Behavioral Health Service Line at VA Pittsburgh, where she had the honor of caring for our nation’s Veterans.

While her clinical expertise centers on the diagnosis and treatment of substance use disorders, Dr. Posteraro also has extensive experience treating a wide range of psychiatric conditions, including depressive and bipolar spectrum disorders, anxiety disorders, and trauma-related disorders.

Dr. Posteraro uses a collaborative, supportive approach to care, incorporating motivational interviewing to help guide patients on their journey to wellness. She integrates holistic strategies alongside medication management and is dedicated to meeting patients where they are in treatment to build individualized, effective recovery plans.

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Dr. Kathryn Hu is a board-certified adult psychiatrist. She majored in biology and neuroscience at Brandeis University, attended medical school at Albert Einstein College of Medicine, and completed residency training at Stony Brook University Hospital. ‍Dr. Hu practices a patient-centered approach to mental health care. She works collaboratively on goals of treatment, with a focus on medication management while incorporating supportive therapy, cognitive behavioral therapy, and mindfulness. ‍Dr. Hu treats a variety of mental health concerns including depression, anxiety, bipolar disorder, PTSD, and ADHD.

Dr. Triston Wong is a board-certified adult psychiatrist who emphasizes a collaborative approach and strong therapeutic alliance in the treatment of psychiatric conditions. Though his practice focuses on medication management, Dr. Wong advocates for a holistic approach to treatment. He may incorporate elements of various psychotherapies, including supportive, cognitive-behavioral (CBT), and insight-oriented therapy. At times, Dr. Wong may believe that additional therapy is needed for the best outcome and recommend that you bring a dedicated therapist into your care team. Dr. Wong completed his undergraduate studies at Tulane University. He received his medical degree from Louisiana State University New Orleans School of Medicine, then completed his residency training in general psychiatry at Thomas Jefferson University Hospital in Philadelphia, PA. Dr. Wong has experience working with patients of widely varying backgrounds and socioeconomic statuses. He works primarily with adult patients struggling with depression, anxiety, trauma, and grief. ‍

Dr. Erlach is a board certified adult psychiatrist who has previously worked for the United States Air Force and the Department of Veterans Affairs. He attended medical school at the Uniformed Services University of Health Sciences, graduating in 2009, followed by active duty military service in the United States Air Force until 2024. He completed residency training at the combined military-civilian Wright State University/Wright Patterson AFB training program in Dayton, Ohio.

Dr. Erlach enjoys working with all types of patients. He takes a collaborative approach to patient care and develops a treatment plan alongside the patient so that both are fully invested in the plan. He generally has weekend and evening appointments only.

Dr. Erlach incorporates therapy into medication management appointments. Dr. Erlach feels that addressing psychosocial stressors and developing coping mechanisms are a vital component to treatment.

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Dr. Mandel received his Bachelor of Arts and Doctor of Medicine degrees from the University of Pennsylvania. He completed his Residency in Psychiatry at Mount Sinai Medical Center in Manhattan. He has been board certified in psychiatry since 2001 and is a Life Fellow of the American Psychiatric Association. He has held numerous clinical and academic appointments including serving as Chairperson of Psychiatry at Huntington Hospital in Huntington, New York, and Assistant Professor of Psychiatry at Hofstra North Shore-LIJ School of Medicine.

Dr. Mandel has over 25 years of clinical experience treating all mental health conditions. He has a strong interest in mood and anxiety disorders, including work-related anxiety. He authored a section on the pharmacology of social anxiety in the book Work Makes Me Nervous. Dr. Mandel also has expertise working with clients diagnosed with borderline personality disorder. He has lectured on the pharmacologic management of this condition, including a presentation at the NIMH International Think Tank for the More Effective Treatment of Borderline Personality Disorder.

Dr. Mandel continually seeks to streamline complex medication regimens. He has completed a fellowship in integrative psychiatry and carefully considers the potential contributions of lifestyle and nutrition to overall mental health and well-being. By taking an eclectic approach, Dr. Mandel is able to achieve the best possible outcome for all whom he is privileged to serve.

Dr. Namrata Shah is a board-certified adult psychiatrist who completed her undergraduate training at the University of Wisconsin-Madison and earned her medical degree at the American University of Antigua. She completed her psychiatry residency at Creedmoor Psychiatric Center with training at New York-Presbyterian/Columbia University Irving Medical Center.

In addition to experience providing inpatient and outpatient care, Dr. Shah has worked with a wide variety of patient populations. The conditions she treats include depression, bipolar disorder, anxiety disorders, panic disorder, OCD, and ADHD. In addition, Dr. Shah is particularly interested in issues related to women’s mental health, including perinatal mental health issues.

Dr. Shah emphasizes the importance of a strong doctor-patient therapeutic alliance and a patient-centered approach. To provide the best care, she believes in compassion, open communication, and collaboration. As a primary treatment method, she combines psychopharmacological medication and supportive therapy.