Marnie Stefan, MD

Dr. Maaeesha Pushpita, MD, is a board-certified psychiatrist with experience caring for patients across all age groups in both inpatient and outpatient settings. She holds a special interest in college-age populations, women’s and reproductive health, trauma-related care, nutritional psychiatry, and psychodynamic psychotherapy and psychopharmacology. Dr. Pushpita earned her medical degree from Northeast Ohio Medical University and completed her psychiatry residency at OhioHealth Riverside Methodist Hospital.

Dr. Pushpita’s approach to care is patient-centered, holistic, empathic, evidence-based, and culturally competent. She values building trust and fostering an environment where patients feel heard, supported, and empowered in their care.

In the initial session, Dr. Pushpita takes time to understand each patient’s history, concerns, and goals. She carefully rules out underlying physical conditions that may impact mental health and cognitive functioning, and collaborates with patients to identify lifestyle changes that can support their well-being. Treatment plans are tailored, evidence-based, and designed to be practical and achievable.

Dr. Krishna Divadeenam is a staff psychiatrist at Talkiatry. He trained in New York and earned his medical degree from Albany Medical College in 1997.  He finished his internship at Vanderbilt Medical Center and completed his psychiatric residency at the University of Kansas Medical Center in 2000. During his residency, he served as Chief Resident at the Kansas City VA Medical Center (KCVA).  His initial post-residency focus was with patients with serious and persistent mental illness (SPMI) when he worked at the Johnson County Mental Health Center.  He has served as a adjunct professor at the University of Kansas providing clinical supervision to residents and yearly lectures on Bipolar disorder, Tourette’s and Obsessive compulsive disorder for over 20 years.  He worked at Midwest Psychiatric associates in an outpatient private practice for nearly 3 years before returning to the KCVA.  There he oversaw care for combat veterans as a clinical psychiatrist and the supervisor for the PTSD Specialty outpatient clinic.  After 5 years he transitioned to the inpatient unit as the inpatient supervisor and one of the attending physicians of the acute inpatient psychiatric unit.  In addition, he served as the University of Kansas Site director for their psychiatric residency program.  

Dr. Divadeenam believes in a holistic approach to mental health treatment, integrating medication management, supportive psychotherapy, and collaboration with therapists and support staff. He tailors treatment to each patient's unique needs, ensuring a comprehensive and individualized approach to care. His expertise includes treating a variety of psychiatric diagnoses, such as mood disorders, anxiety disorders (including OCD), ADHD, and PTSD.

In a first visit, patients can expect a thorough evaluation, where Dr. Divadeenam takes the time to understand their medical history, symptoms, and treatment goals. He emphasizes open communication and collaborative decision-making, ensuring that patients feel heard and supported. Based on this initial assessment, he will develop a personalized treatment plan, which may include medication management and referrals to therapy or other supportive services as needed.

Dr. JinGu Lee is a Board-Certified Psychiatrist in the states of New Jersey and New York. Dr. Lee focuses on understanding each client's unique background and building a strong therapeutic alliance with his client. He works with ethically and culturally diverse patient populations who struggle with conditions such as depression, anxiety, bipolar disorder, relationship issues, and more. Dr. Lee provides comprehensive medication management, including screening for relevant medical conditions, and incorporates elements of psychotherapy during his regular visits when appropriate. Dr. Lee has a long-standing interest in preventive care and cultural diversity. He studied Public Health and Cultural Anthropology at Rutgers University and received his medical degree from Rowan University School of Osteopathic Medicine in New Jersey. He completed his Psychiatry residency training at Cooper University Hospital in Camden, New Jersey, where he was recognized for his excellence in outpatient service. Outside of his career, he enjoys traveling, singing, and hiking. He believes in living a balanced lifestyle with clear goals and also focuses on maintaining a close connection with his own family.

Dr. Corey Greenwald is a board-certified psychiatrist with years of experience treating patients in both acute inpatient psychiatric emergencies and outpatient medication and psychotherapy settings. He earned his medical degree from Brown University, completed his internship in the Columbia system, and pursued residency training at Mount Sinai Medical Center in New York City. Dr. Greenwald has practiced in academic, urban, suburban, and rural environments, which has given him broad perspective and adaptability in caring for diverse patient populations.

Dr. Greenwald emphasizes psychoeducation as a core part of care, ensuring patients are active participants in understanding and managing their mental health. He brings a deep interest in transcultural issues and in how social media and news cycles impact emotional well-being. Having witnessed the effects of mental illness within his own family, Dr. Greenwald approaches his work with empathy, insight, and a strong commitment to helping patients feel supported throughout their journey.

Dr. Greenwald works collaboratively with patients to define or clarify concrete treatment goals by the end of the initial appointment. He maintains a low threshold for revisiting and adjusting treatment plans if progress feels unsatisfactory, ensuring care remains flexible and effective. His informal, eclectic interpersonal style allows him to tailor his approach to each individual, fostering trust and partnership in the therapeutic process.

Dr. Dopkin is a board-certified adult and child psychiatrist dedicated to helping patients feel well and stay well. A Long Island native, he earned his bachelor’s degree from Cornell University before attending St. George’s University School of Medicine. He completed his adult and child psychiatry training at Brown University. For over two decades, Dr. Dopkin has served New York City communities across Queens, Manhattan, and the Bronx, primarily within the public hospital system. He has held clinical, academic, and administrative leadership roles and has been recognized for his excellence in teaching and mentoring psychiatry residents. He also serves as Assistant Dean of Students for the U.S. clinical program at St. George’s University

Dr. Dopkin provides patient-centered care grounded in a biopsychosocial approach. He collaborates with each patient to tailor treatment plans that integrate evidence-based medication options with interpersonal and supportive therapy. He has worked with patients of all ages and backgrounds, including individuals from marginalized communities and those coping with trauma, depression, anxiety, and comorbid medical conditions.

With warmth and respect, Dr. Dopkin meets each patient where they are, helping them find the path that works best for their unique needs and goals.

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.