Susannah Williams, MD

Dr. Anna Ostrovskaya is a board-certified psychiatrist with over 20 years of experience working with adults of all ages. She earned a bachelor’s degree in psychology from NYU, a medical degree from Rush Medical College, and completed her psychiatry training at Yale. Dr. Ostrovskaya has practiced in inpatient, consultation-liaison, and emergency psychiatry settings, though her primary passion is outpatient care, where she builds long-term therapeutic relationships. She has worked in private practice and clinic settings and serves on the faculty at Yale’s Psychiatry Department, teaching and supervising trainees. She treats a wide range of conditions, including anxiety, OCD, ADHD, PTSD, depression, bipolar disorder, and more, with experience across diverse populations.

Dr. Ostrovskaya emphasizes integrating therapy and medication management. She creates a warm, safe, and respectful space where patients feel understood and supported in their journey to recovery. Her approach focuses on treating the whole person, recognizing that everyone’s story is unique and informs the best path forward.

She conducts thorough evaluations and uses evidence-based prescribing while incorporating psychotherapeutic modalities such as CBT, executive skills training, insight-oriented approaches, and motivational interviewing. Understanding a patient’s history, current symptoms, and treatment goals is central to developing an effective plan and building a strong therapeutic relationship.

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Dr Mark Giordano is a board-certified psychiatrist with over ten years of experience in adult psychiatry, addiction medication, pregnancy and post-partum care, complex medical consultation, and military health. Dr G practices psychodynamic psychotherapy as well as evidenced based medication management. Dr G has extensive experience working with culturally diverse populations, and is an Army veteran who deployed to Korea and Afghanistan.

Patients often describe Dr G as caring, providing clear explanations, and responsive to concerns.   Dr G highly values his patients trusting him to listen and respect them, as well as in his clinicial skills.  He works hard at helping his patients understand his approach to treatment, and what is happening along the way and why. He may be the medical expert, but he and his patients are partners working together in the process of achieving better health and functionality for them so they can live their best lives.

Dr G starts by explaining his overall approach to medication management and his goal of helping his patients live a better life free of disability. He conducts a detailed evaluation of your concerns, your experiences, and your priorities in treatment.  Dr G develops a unique treatment plan based on your unique needs. He emphasizes positive developments over the course of your work together and makes sure you always have a chance to discuss any questions or concerns you want him to know and answer.

Dr. Monica Badillo is double board-certified in child and adolescent psychiatry and adult psychiatry by the American Board of Psychiatry and Neurology. She received additional training and certification in Psychodynamic Psychotherapy at the New York Medical College Psychoanalytic Institute. Dr. Badillo is bilingual and speaks Spanish and English to deliver quality care for patients and parents. She provides medication management while incorporating psychoeducation, supportive, and psychodynamic psychotherapies. Generally, she employs 30-minute follow up sessions, and she may request a psychotherapist to participate in treatment. She listens and builds rapport with patients and families, while utilizing a trauma-informed, patient-centered, comprehensive, and collaborative approach. She completed her undergraduate degree at Fordham University in New York, and subsequently received her medical degree from Ross University School of Medicine in Dominica. She then completed general psychiatry residency and child and adolescent psychiatry fellowship at the Icahn School of Medicine at Mount Sinai, BronxCare Health System. She excelled in her program and was awarded honors as Chief Fellow in achievement and professionalism. After completing training, Dr. Badillo continued to work at the institution as an attending psychiatrist in the Child and Adult Outpatient Services, Pediatric Comprehensive Psychiatric Emergency Program (CPEP), and Pediatric Consultation Liaison services. She has held leadership roles, and instructed medical students, fellows, and resident physicians. Dr. Badillo has treated patients of all age ranges and diverse backgrounds in community mental health settings. Her primary focus is treating children, adolescents, and young-early adults for depression, anxiety, bipolar disorders, ADHD, trauma-related disorders, disruptive behavior disorders, and other psychiatric conditions.

Dr. Michael Manasterski is a board certified general psychiatrist. Before joining Talkiatry, he had the honor of working for the Department of Veterans Affairs in both outpatient and residential settings, and gained experience in improving quality of life for veterans with a wide range of troublesome to downright disabling psychiatric conditions, including severe anxiety and mood disorders, psychosis, obsessive-compulsive disorder, developmental disorders including autism spectrum and attention-deficit disorders, and post-traumatic stress disorder. These disorders have almost certainly been with us for all of recorded human history, but within the last few generations, our understanding of and ability to treat these conditions has grown by leaps and bounds.

Dr. Manasterski trained at the University of South Florida, earning his Bachelor of Science in Biology, and completing medical school and residency at the Morsani College of Medicine in Tampa, Florida. During his time in training and at the VA, his passion for teaching, both medical trainees and patients, found a productive outlet. He looks forward to bringing that experience forward to serve the broader population in these unprecedented times.

Dr. Manasterski’s practice is centered on evidence-based medication management, expertly tailored to each unique individual, informed by the best available research, using a multidisciplinary approach where appropriate to achieve the best possible outcome. He offers motivational interviewing and supportive psychotherapy, and can collaborate with a therapist on your care team when more specialized treatment is needed on your journey to wellness.

Dr. Harmeeta Singh was born and raised in St. Louis, MO and is board certified with ABPN (American Board of Psychiatry & Neurology). Dr. Singh has been in practice for 15 years and focuses on an individualized treatment plan, not only using pharmacotherapy when needed, but also implementing insight-oriented, supportive, motivational, and brief psychotherapy. Dr. Singh is a firm believer in combining psychotherapy with medication management when warranted to manage and treat a wide variety of mental health conditions including, but not limited to - Depressive Disorders, Bipolar Disorders, Psychotic Disorders, Anxiety Disorders, Trauma related disorders, Substance use disorders, Personality disorders, Sleep Disorders and Eating Disorders. Her dynamic approach is client focused, involving the client throughout their treatment and care plan, taking careful consideration to the individual's needs and goals. ‍Upon completion of her residency through St. Louis University, St.Louis, Dr. Singh joined her parents' Internal Medicine practice. She learned firsthand that implementing mental health awareness, screening, and education into a primary medically focused practice led to more favorable outcomes. Many mental health conditions can manifest as and/or exacerbate a variety of medical/physical conditions and thereby go undiagnosed and untreated. Dr. Singh has worked closely and coordinated care within the medical field and with other specialists in treating and diagnosing comorbid mental health conditions. While in private practice for over 10 years, she was also an attending and consultant for inpatient mental health care and provided mental health services for residents in various residential care facilities, group homes, and skilled nursing facilities. Over the past 5 years she has consolidated her practice and presently is employed with Compass Health Network in Missouri helping bridge the gap in mental health care by coordinating and providing care to the underserved community.

Dr. Justine Sever Chilelli, DO, earned her medical degree from the Lake Erie College of Osteopathic Medicine and completed her psychiatry residency and child and adolescent fellowship at the University of South Florida. She is board certified in General Psychiatry and Child and Adolescent Psychiatry. Her experience includes treating children, adolescents, and adults across outpatient, inpatient, consultation-liaison, school-based, and residential settings.

Dr. Chilelli values a collaborative, team-based approach where she and her patients work together to build a treatment plan. She emphasizes open and honest communication, aiming to improve quality of life and reduce the impact of mental health symptoms.

In the initial appointment, Dr. Chilelli focuses on understanding each patient’s history, concerns, and goals. She then develops individualized treatment plans that align with those goals, ensuring care that is thoughtful, supportive, and tailored to each patient’s needs.