Justin Pereira, MD

Dr. Stephen Geisler is a board-certified adult psychiatrist and has been practicing for over 37 years. His practice focuses on medication management, and typically offers this in conjunction with supportive therapy in 30-minute follow-up visits. If Dr. Geisler feels you would benefit from working with a therapist in conjunction with medication management, he welcomes collaboration with your therapist to make for the best outcome. Dr. Geisler is a graduate of the New York University School of Medicine. He completed a fellowship in Psychoanalytic Psychotherapy at the Zucker Hillside Hospital of Northwell Health after finishing his residency training there. He is currently an Assistant Clinical Professor at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell. Over the years Dr. Geisler has received a number of awards including NAMI Exemplary Psychiatrist Award, The APA Irma Bland Certificate of Excellence in Teaching Residents, the Zucker Hillside Hospital Department of Psychiatry Recognition Award for Education, and twice received the Outstanding Teacher of the Year Award from the graduating residents' class. Dr. Geisler is a member of the American Psychiatric Association, the Nassau Suffolk District Branch of the APA and the American Society of Clinical Psychopharmacology. Through the years, Dr. Geisler has participated in many clinical research projects, has been the co-author of many papers, and has made many presentations. Dr. Geisler specializes in psychopharmacology, especially tailoring individualized treatment to serve the needs of patients with a variety of conditions. He has a lot of experience in treating patients with depression, bipolar disorder, anxiety disorders, ADHD, and OCD.

Dr. Kevin Lu is a board certified adult psychiatrist. In addition to medication management, he integrates elements of psychotherapy, psychoeducation, lifestyle changes, and relationship skills into his approach. He enjoys working with a variety of individuals and conditions, with particular experience with veterans, immigrants, and university students. He has a friendly and casual style, and prioritizes strong therapeutic relationships in his work. Dr. Lu completed his undergraduate studies at New York University's Stern School of Business, and after a short career in finance, he made a transition into medicine. He received his medical degree from the Zucker School of Medicine at Hofstra/Northwell, and completed residency training in psychiatry at the University of Arizona in Tucson.

Background  and credentials    

Dr. Andrew Lelin is a board-certified Psychiatrist in Adult Psychiatry. He  received his bachelor's degree from Johns Hopkins University and a master's  in Medical Humanities, Compassionate Care, and Bioethics from Stony Brook  University. Dr. Lelin earned his medical degree from Hofstra-Northwell School  of Medicine and completed his residency at Rutgers-Robert Wood Johnson School  of Medicine, where he specialized in advanced psychopharmacology with diverse  patient populations. He also has extensive training and experience in  psychotherapeutic modalities, including psychodynamic therapy,  cognitive-behavioral therapy, habit-reversal therapy, and cognitive  processing therapy. Following his training, Dr. Lelin provided inpatient  consultation and crisis intervention services in New York City.    

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Treatment approach    

Dr. Lelin employs a compassionate, humanistic approach designed to align  closely with his patients' personal goals and values. His method integrates  advanced psychopharmacology with psychotherapeutic techniques such as  psychodynamic, cognitive-behavioral, habit-reversal, and cognitive processing  therapies. He aims to carefully balance diagnosis, avoiding both  overdiagnosis and underdiagnosis, to ensure precise and tailored care. Dr.  Lelin’s approach is particularly effective in addressing conditions like  anxiety, depression, bipolar disorder, OCD, trauma-related issues, and other  psychiatric conditions.    

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What you can expect in a first visit    

During the initial visit, patients can expect a comprehensive, detailed  evaluation designed to thoroughly understand their individual experiences and  needs. Dr. Lelin prioritizes establishing a compassionate and comfortable  environment where patients can openly discuss their concerns and goals. This  initial assessment is followed by meticulous and thoughtful follow-ups,  providing clarity and direction in the treatment process.    

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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 speciualize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

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.

Justin Jones is a board-certified adult psychiatrist based in Las Vegas, NV. Originally a Mississippi native, he completed undergraduate studies at the University of Mississippi. He subsequently completed medical school and post-graduate residency training at the University of Mississippi Medical Center. His practice focuses on making progress towards therapeutic goals by utilizing a specifically tailored combination of medication management and psychotherapy depending on any given individual's needs. He understands how difficult it can be to begin seeing a new psychiatrist, and does his best to create a safe, welcoming environment that patients can feel comfortable in.

Dr. Emily Sykes is a board-certified adult psychiatrist. She received her Bachelor of Arts degree with Magna Cum Laude distinction from Carleton College, where she majored in biology. Dr. Sykes completed her Doctor of Medicine degree from the University of Toledo. She completed her psychiatry residency at the University of Cincinnati and was the outpatient chief resident physician. Dr. Sykes' specialty interests include mood disorders, anxiety disorders, post-traumatic stress disorder (PTSD), obsessive-compulsive and related disorders, Cognitive-Behavioral Therapy (CBT) and holistic wellness. She is a certified Cognitive Processing Therapy (CPT) provider for PTSD. Dr. Sykes provides compassionate, evidence-based, individualized, holistic care for patients suffering from a variety of mental health diagnoses and concerns. She incorporates supportive therapy, cognitive-behavioral therapy and solutions-focused therapy into her sessions.