Sumeet Singh, MD

Dr. Taj Deen earned his medical degree from Dow Medical College in Karachi, Pakistan, and completed psychiatry residency training at Maimonides Medical Center in Brooklyn. He has over 20 years of experience at Jacobi Medical Center’s acute inpatient psychiatric unit, led an acute psychiatric unit for 10 years at Montrose VA Hospital in New York, and served for 25 years in the psychiatric emergency room at Westchester Medical Center.  

Dr. Deen prioritizes building a genuine therapeutic alliance with all patients, fostering open communication and collaboration. He works closely with patients to set clear treatment goals and objectives while creating a warm, supportive environment in which patients feel heard, respected, and empowered.  

Dr. Deen begins with a comprehensive interview to understand each patient’s history, concerns, and goals. From there, he develops individualized treatment plans tailored to the patient’s objectives, combining compassionate guidance with evidence-based psychiatric care to support meaningful progress.

Dr. Abdali is a double board-certified psychiatrist in general adult psychiatry and addiction psychiatry. Dr. Abdali has practiced for over 5 years in a variety of settings including outpatient clinics, inpatient hospitals, emergency rooms, and residential treatment centers.

Dr. Abdali has experience treating depressive disorders, anxiety disorders, ADHD, bipolar disorders, PTSD,  substance use disorders and others. Most recently, Dr. Abdali worked in the VA system, treating veterans utilizing both medication management and psychotherapy.

Dr. Abdali prioritizes shared decision making with his patients in order to facilitate practical treatment plans. During clinical visits, Dr. Abdali combines medication management as well as various therapy modalities including supportive psychotherapy, cognitive behavioral therapy, and motivational interviewing.

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Background and credentials

Dr. Kristina Schnitzer is a board-certified psychiatrist. She earned her medical degree from the New York University School of Medicine and completed her residency in Adult Psychiatry at the Massachusetts General Hospital/McLean Adult Psychiatry Residency Program. She further specialized by completing a one-year clinical and research fellowship in Public and Community Psychiatry through Massachusetts General Hospital and the Massachusetts Department of Mental Health. In addition to her medical training, she holds a Master of Public Health (MPH) from the Harvard T.H. Chan School of Public Health. She has over three years of experience practicing psychiatry across inpatient, emergency, and outpatient settings.

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Treatment approach

Dr. Schnitzer focuses on medication management as the foundation of her treatment approach, typically combining it with supportive or emotionally focused therapy during 30-minute follow-up visits. She takes a collaborative and individualized approach to patient care and, when needed, may recommend additional therapy by integrating a therapist into the care team to ensure the best possible outcomes. She has experience treating a broad range of psychiatric disorders in various clinical settings.

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What you can expect in a first visit

Patients can expect a thorough and structured evaluation in their first visit, where Dr. Schnitzer carefully assesses their symptoms, medical history, and treatment goals. She emphasizes open communication and collaboration, ensuring that patients are fully involved in shaping their treatment plans. Follow-up visits typically last 30 minutes, during which she monitors progress, adjusts treatment as needed, and may recommend additional therapeutic support for comprehensive care.

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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. Patel is a distinguished psychiatrist with over 24 years of experience. He completed his psychiatric residency at the University of South Dakota School of Medicine, where he served as chief resident and earned the Outstanding Resident of the Year award. He then pursued a fellowship in Consultation-Liaison Psychiatry at Harvard Medical School/Beth Israel Deaconess Medical Center.

He is triple Board certified in Adult Psychiatry, Consultation-Liaison Psychiatry, and Sleep Medicine and also holds certification in Behavioral Neurology and Neuropsychiatry from the United Council for Neurological Subspecialties. These credentials reflect his expertise in psychiatry, neurology, and the management of complex psychiatric conditions in medically ill patients.

Dr. Patel has worked in diverse settings including inpatient units, psychiatric consult services, outpatient clinics, and nursing homes. He is skilled in neuromodulation treatments such as Electroconvulsive Therapy (ECT) and Transcranial Magnetic Stimulation (TMS).

In addition to clinical practice, he has served leadership roles of chairman of a psychiatric department, medical director of a behavioral health service line in a regional health system, and founder/CEO of a private psychiatric and TMS clinic. Dedicated to ongoing professional growth, Dr. Patel remains at the forefront of psychiatric advancements in psychiatric care, earning a reputation as a respected leader in the field.

Dr. Patel combines deep knowledge of neurobiology, behavioral health, and the mind-body connection to offer a collaborative, evidence-based, and holistic approach to care. He integrates diet, exercise, yoga, meditation, and lifestyle modifications with psychotherapy and medication management.

His approach emphasizes active listening, curiosity, compassion, and even humor—creating a warm and supportive environment. By encouraging patients to integrate their unique life experiences into their treatment, he fosters ownership, empowerment, and active participation in the healing process.

During your first visit, Dr. Patel will review your symptoms, medical and psychiatric history, past treatments, substance use, psychosocial factors, and family history. He will discuss treatment options—including risks and benefits—and determine if his expertise and the telehealth platform are the right fit for your needs. Your safety is his top priority.

Follow-up visits focus on monitoring progress, adjusting treatments, maintaining stability, and supporting your motivation to achieve your fullest potential.

Dr. Mendez obtained his medical degree from the University of Texas Medical School in Houston. He subsequently completed his Psychiatry residency training at the same institution, UT Medical School in Houston. Dr. Mendez has extensive training in the field and is board certified in Adult Psychiatry by the American Board of Psychiatry and Neurology. After professional training, Dr. Mendez has had vast experience of 15 years primarily in the outpatient setting including ample experience with telemedicine services to patients. He has extensive experience in diagnosing and treating adult patients dealing with attention deficit disorders and a wide spectrum of adjustment and anxiety disorders. Dr. Mendez has a special interest in the treatment of mood disorders from Major Depression to Bipolar spectrum disorders. Dr. Mendez prioritizes the development of great communication, mutual understanding and trust with his patients as he finds these elements to be key to a successful treatment. He establishes his treatment plans upon evidence-based guidelines and encourages a holistic approach for optimal well-being. Through effective medication management and supportive psychotherapy, Dr. Mendez leads his patients to optimal mental health. He encourages patients to strive to develop fulfillment and optimal functionality in their life's roles.

Dr. Kristofer Joondeph-Breidbart is a board certified adult psychiatrist. He earned his undergraduate degree and Master's in Teaching from Boston University, followed by his medical degree from the University of Massachusetts Medical School. Dr. Joondeph-Breidbart completed his residency in general adult psychiatry at Cambridge Health Alliance, a Harvard teaching hospital. Currently, Dr. Joondeph-Breidbart serves as a staff psychiatrist at Harvard University Health Services, where he works with both undergraduate and graduate students. He has developed significant expertise in working with LGBTQ individuals through his involvement with the Gender and Sexuality Clinic at Cambridge Health Alliance and the LGBTQ Interdisciplinary Team at Harvard University Health Services. While he has extensive expertise in treating college-aged young adults, his practice also includes a broad range of patients, with a particular specialization in Obsessive-Compulsive Disorder (OCD). He is trained in Exposure and Response Prevention Therapy, a highly effective treatment for OCD. Dr. Joondeph-Breidbart takes a holistic approach to mental health care, integrating therapy into his sessions and collaborating with patients to develop individualized medication regimens that best meet their needs. His gentle and understanding approach helps create a supportive environment for his patients, fostering their mental and emotional well-being.