Stephanie Negrey, MD

Background and credentials

Dr. John Whittier is a board-certified psychiatrist. He earned his Bachelor of Arts in Molecular, Cellular, and Developmental Biology from the University of Colorado at Boulder and went on to obtain a master’s degree in Medical Science from Loyola University Chicago. He completed his medical training at the Robert Larner, M.D. College of Medicine at The University of Vermont and returned to Colorado for his psychiatry residency at the University of Colorado School of Medicine. While in residency, he specialized in the Psychotherapy Scholars Program and has since gained four years of experience treating psychiatric conditions through telehealth.

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Treatment approach

Dr. Whittier primarily focuses on medication management for general psychiatric conditions. His approach is individualized, ensuring that each patient receives a treatment plan tailored to their unique needs. He integrates supportive therapy, medications, and evidence-based alternative therapies to provide a flexible and comprehensive approach. In addition to his general practice, he maintains a psychodynamic psychotherapy panel where he helps patients explore developmental and relational patterns that contribute to their symptoms. His specialties include treating depression, anxiety, adjustment disorders, PTSD, insomnia, bipolar disorder, and ADHD.

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What you can expect in a first visit

During the first visit, patients can expect a one-hour comprehensive intake during which Dr. Whittier thoroughly evaluates their symptoms, medical history, and personal goals. He provides treatment options that prioritize flexibility, allowing patients to take an active role in their care. Follow-up visits typically last 20 to 30 minutes, focusing on assessing treatment progress and making necessary adjustments. For those engaged in psychodynamic psychotherapy, longer one-hour sessions are available for in-depth exploration of underlying psychological patterns.

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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. Pereira is a board-certified adult psychiatrist who is dedicated to providing compassionate care for a wide range of mental health concerns. He received his Bachelor of Arts from Harvard University and his medical degree from The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, where he graduated with the Department of Psychiatry's award of distinction. He went on to complete his psychiatric residency training at Northwell Health's Zucker Hillside Hospital, with a specialization in the assessment and treatment of obsessive compulsive disorder and related conditions. Dr. Pereira's clinical approach emphasizes building trust with his patients and working collaboratively to develop an individualized treatment plan. He uses medication management along with cognitive behavioral therapy, exposure and response prevention, psychodynamic psychotherapy, interpersonal psychotherapy, and supportive therapy as needed. His practice treats a wide range of conditions, including depression, anxiety, OCD, family and relationship struggles, and other mental health issues. He has been trained in a wide range of settings including inpatient, outpatient, emergency departments, and behavioral health crisis centers. He also has experience teaching and supervising medical students and psychiatry residents.

Dr. Benita Dieperink, MD, is board-certified in psychiatry by the American Board of Psychiatry and Neurology. She earned her medical degree from the University of Minnesota Medical School and completed residency at the University of Colorado Health Sciences Center. She has extensive experience in private practice, academic leadership, and faculty roles, with expertise in treating diverse adult populations. She specializes in perinatal and reproductive psychiatry, supporting patients through pregnancy, postpartum, PMS, infertility, and perimenopause/menopause, as well as mood, anxiety, trauma-related, and obsessive-compulsive disorders.

Dr. Dieperink values open communication and a collaborative approach, creating a warm, supportive environment where patients feel heard and respected. She integrates psychopharmacology and psychotherapy to help patients work toward clear treatment goals, while fostering a growth- and strengths-based perspective. She also draws on a wide range of interests—from medical science to psychology and history—to enrich patient education.

Dr. Dieperink begins by thoroughly understanding each patient’s history, concerns, and goals. She develops individualized treatment plans aligned with these goals and regularly reassesses progress to refine strategies as needed, ensuring care is responsive, personalized, and effective.

Neena Tressa Mathew has built an impressive career in the medical field, with a strong focus on mental health. She is dually board-certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC), providing care across all age groups. Fluent in English, Hindi, and Malayalam, she is licensed to practice in Florida, New York, Texas, and Georgia. Neena offers a patient-centered approach that integrates her diverse experience and certifications.

Her dedication to mental health is evident through her extensive hands-on experience in assessing, treating, and evaluating patients with a wide range of psychiatric conditions, including ADHD, depression, anxiety, PTSD, OCD, schizophrenia, and bipolar disorder. She has delivered exceptional care at institutions such as Mindful Behavioral Healthcare, AdventHealth Hospital, and Park Place Behavioral Health Care. Her international experience includes roles in Canada, where she further developed her expertise in geriatric psychiatry. Neena has also worked in various practice areas, including addiction medicine, grief counseling, and primary care.

Her academic background includes a Post-Master’s Certification from Florida State University and a Master of Science from D’Youville College in Buffalo, NY. She also holds a Bachelor of Science in Nursing from Delhi University and a Master’s Degree in Social Work from the Delhi School of Social Work. Her professional affiliations, including membership in the American Nurses Association, reflect her commitment to the field. Recognized for her academic, leadership, and research capabilities, Neena was invited to join Sigma Theta Tau International (STTI) as a graduate nursing student for her excellence in scholarship and outstanding achievements in nursing.

Neena has contributed to several U.S. nursing journals and magazines and has published and presented research articles in international peer-reviewed journals. She maintains an active academic presence through platforms like Google Scholar and ResearchGate.

Her approach to care is both traditional—prescribing evidence-based psychiatric medications—and holistic, incorporating natural treatments such as vitamins, supplements, lifestyle modifications, nutrition, exercise, and stress management. She believes in the mind-body-spirit connection, viewing individuals as whole beings rather than a collection of symptoms, echoing the philosophy of Hippocrates, the "Father of Medicine." Her holistic philosophy is evident in her skillful management of psychotropic medications and her integration of psychotherapy, including supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy.

Neena’s primary interest lies in exploring the relationship between mental, physical, and spiritual health. She finds great fulfillment in helping others and goes beyond diagnosis and treatment by conducting thorough mental health assessments to ensure accurate identification of psychiatric conditions. What sets her apart is her commitment to patient education—empowering individuals and their families with a deep understanding of their conditions and treatment plans, including medication as part of a comprehensive care strategy.

In addition to her clinical work, Neena serves as a clinical instructor, sharing her knowledge and insights with future healthcare professionals. This dual role highlights her multifaceted contribution to healthcare, emphasizing both treatment and education in supporting individuals on their mental health journeys.

Outside of her professional life, Neena enjoys reading, writing, beach activities, hiking, and traveling with her family. She is also actively involved in charitable work through the Lions Club. She lives by the principle:

“Give, and it will be given to you. A good measure, pressed down, shaken together and running over, will be poured into your lap. For with the measure you use, it will be measured to you.” (Luke 6:38)

Indeed, she believes that it is in giving that we truly receive.

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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. Giselle Brito is board-certified in adult psychiatry and has been practicing for over 4 years. She received her medical degree from San Juan Bautista, School of Medicine in Puerto Rico and continued her medical education at Jackson Memorial Hospital & University of Miami Hospital for her 4-year psychiatry residency training program. After completing her training, Dr. Brito worked at the Miami Veterans Affairs Hospital and then the Orlando Veterans Affairs Hospital in the primary care mental health integrated model. Dr. Brito also holds certification in Perinatal Mental Health. Dr. Brito's practice focuses on medication management and supportive psychotherapy in typically 30-min follow up visits. At times, additional psychotherapy is needed and a therapist may be added to provide the best outcome.‍