Seth Mandel, MD

Dr. Alexandre is a board-certified psychiatrist who completed his psychiatry training both in Brazil and in the United States, where he served as Chief Resident in both programs. He is fluent in both English and Portuguese and is especially attuned to the unique challenges faced by international and immigrant populations. Dr. Alexandre is passionate about helping patients achieve meaningful and sustained improvements in their mental health.

He brings over a decade of experience in mental health care and has a strong foundation in evidence-based treatment. His clinical interests include mood and anxiety disorders, ADHD, and cross-cultural psychiatry.

Dr. Alexandre incorporates a collaborative and compassionate approach to care, combining medication management with elements of cognitive behavioral therapy, behavioral activation, and interpersonal strategies when appropriate.

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Dr. Michael Kim, DO, is an accomplished attending psychiatrist dedicated to providing comprehensive mental health care. He earned his medical degree from Liberty University College of Osteopathic Medicine and completed his residency at HCA's The Medical Center of Aurora North. With a diverse clinical background, Dr. Kim has honed his expertise across various settings including inpatient, outpatient, PHP/IOP, and specialized areas such as geriatrics, eating disorders, addiction, and child and adolescent psychiatry. Dr. Kim is proficient in innovative treatments like Electroconvulsive Therapy (ECT) and Transcranial Magnetic Stimulation (TMS). He is passionate about employing supportive and psychodynamic therapy approaches, tailoring treatment plans to meet each patient's unique needs. Embracing a holistic approach to psychiatry, Dr. Kim integrates medication management with a focus on nutrition, diet, and lifestyle factors to foster overall well-being. Dr. Kim is committed to delivering high-quality, personalized care to his patients. Outside of his professional commitments, he is an advocate for personal health and wellness. He enjoys enhancing his fitness and nutrition, engaging with enlightening podcasts, and exploring the great outdoors. Dr. Kim's holistic approach to psychiatry reflects his belief in treating the whole person, ensuring optimal mental and physical health for each individual he serves.

Dr. Swagato Bhattacharyya has completed his residency training at Northwell and is a board certified psychiatrist. Dr. Bhattacharyya takes a holistic approach to patient care, establishing strong physician-patient relationships built on trust, respect, and communication. He primarily focuses on medication management and also provides supportive psychotherapy. Treatment sessions will be tailored to work towards a common goal to optimize one's mental well-being. Dr. Bhattacharyya graduated magna cum laude from undergraduate Binghamton University, received his medical degree from NYIT College of Osteopathic Medicine, and completed his residency in psychiatry at Northwell Mather Hospital. He has trained in various settings, including adult/adolescent psychiatric units and specialty clinics, and has experience in telepsychiatry visits. Dr. Bhattacharyya has experience in treating numerous mental conditions, including depressive disorders, bipolar disorder, anxiety disorders, ADHD and OCD. Dr. Bhattacharyya also has experience treating patients of diverse cultures, having worked in psychiatric settings in the NYC metro and Long Island area.‍

Dr. Adeola Mustapha is a board-certified psychiatrist with experience across outpatient, inpatient, and community mental health settings. She completed her psychiatry residency at Indiana University School of Medicine – Vincennes in July 2024 after earning her medical degree from Ross University School of Medicine. Recognized for her exceptional psychotherapy skills, Dr. Mustapha received therapy awards in both her PGY3 and PGY4 years. Her background reflects a commitment to blending strong clinical training with compassionate, patient-focused care.

Dr. Mustapha creates a warm, collaborative, and supportive environment where patients feel respected and understood. She believes in the power of psychotherapy combined with evidence-based psychiatric care, always striving to integrate both in treatment. Open communication and clear, realistic goal setting are central to her approach. She is committed to a holistic perspective that considers emotional, physical, cultural, and social well-being. With an emphasis on empowerment, Dr. Mustapha encourages patients to take an active role in their healing journey.

Dr. Mustapha begins with a comprehensive evaluation to learn each patient’s history, concerns, and goals. She develops individualized treatment plans that may integrate therapy modalities such as CBT, DBT, TF-CBT, psychoanalysis, and FETI, along with medication management when appropriate. Using a goal-oriented, step-by-step process, she tracks progress and adapts treatment as needs evolve. Through ongoing dialogue, she ensures patients feel supported, informed, and engaged throughout their care. Her aim is to foster long-term resilience and overall wellness, not just symptom relief.

Dr. Siera Kirkland is an adult general psychiatrist. She is a diplomate of the American Board of Psychiatry and Neurology. She has been practicing for 8 years. Dr. Kirkland focuses on collaborative and evidence-based care. She believes it is imperative to form a therapeutic relationship with each individual and work together as a team to formulate the best treatment plan. Her passion is to educate, empower, and support. She specializes in medication management and brief psychotherapy .Dr. Kirkland received her medical degree from Ross University School of Medicine. She completed her residency at The Cleveland Clinic Akron General and Summa HealthSystem in her hometown of Akron, OH. Upon completion of residency, she relocated to Charlotte, NC to start her career as the Lead Psychiatrist at Novant Health Psychiatric Associates- Matthews. Dr. Kirkland has experience in treating various patient populations. Her areas of focus have been perinatal and postpartum depression and anxiety. She has also worked with adults with co-occurring substance use disorders. Special interests include women's health and minority mental health disparities.‍For established patients of Dr. Kirkland, call 917-634-5311 to schedule an appointment and let the care coordinator know you are an established patient.

Dr. Caitlin Gardiner is a board-certified psychiatrist specializing in child and adolescent psychiatry and psychotherapy. Dr. Caitlin Gardiner's practice is based on the biopsychosocial model and believes that the foundation of healing is in psychotherapy and human connection. She is known for incorporating therapy into her medication management practice. Typically she offers 30-minute follow-up visits for medication management with focused therapy based on individual needs. As a known helper, Dr. Gardiner started her career with a bachelor's degree in social work from Cazenovia College in Cazenovia, NY. After changing career paths, she received her medical degree from SUNY Upstate Medical University in Syracuse, NY. She stayed upstate to complete her general psychiatry residency, where she was chief resident at the beginning of the COVID-19 pandemic. Following this, she completed her child and adolescent psychiatry fellowship at Upstate due to the high quality of training. Dr. Gardiner has completed 3 years of advanced training in Dynamic Deconstructive Psychotherapy as well as specialized training in DBT. Dr. Gardiner is a well-rounded psychiatrist who enjoys treating youth and young adults during transitional phases of life while providing a safe and supportive environment. She believes strongly in reducing polypharmacy and providing high-quality medication management through a therapeutic and developmental lens.