Darcie Farrell, PMHNP

More Clinicians

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.

Ilisse Perlmutter, MD

Director of Child and Adolescent Psychiatry

Dr. Illise Perlmutter is the Director of Child and Adolescent Psychiatry at Talkiatry. She is double board-certified in child and adolescent psychiatry and adult psychiatry. Before joining Talkiatry, Dr. Perlmutter was the Chair of Behavioral Health and Addiction Services at Bergen New Bridge Medical Center. Prior to Bergen New Bridge, she was the Director of Inpatient Psychiatry at Montefiore Medical Center-Wakefield, in New York. Over 35 years, Dr. Perlmutter has held numerous leadership roles with some of the largest hospital systems in the New York Metro Area. Dr. Perlmutter is a Distinguished Life Fellow of the American Psychiatric Association, a Fellow of the American College of Psychiatrists, and a Distinguished Fellow of the American Academy of Child and Adolescent Psychiatry. She has received awards for her contributions both locally and nationally. Dr. Perlmutter was included in Castle Connolly's "America's Top Doctors” list from 2006-2011 and 2017, as well as "Best Doctors in America” from 2009- 2012. Dr. Perlmutter received her MD from George Washington University School of Medicine and Health Sciences. After an internship in pediatrics, she completed a residency in Psychiatry at Mt. Sinai Medical Center followed by a fellowship in Child and Adolescent Psychiatry at Columbia University/New York State Psychiatric Institute. Dr. Perlmutter has held leadership roles in several academic institutions and is a Clinical Associate Professor of Psychiatry and Behavioral Science at George Washington University School of Medicine and Health Sciences in Washington, D.C. Dr. Perlmutter has authored numerous publications and research articles and has lectured and presented extensively on clinical, epidemiologic, and psychopharmacologic issues in child and adolescent psychiatry. She has made frequent media appearances addressing topical issues in disaster psychiatry during the course of her work in disaster psychiatry outreach.

John Whittier, MD

Staff Psychiatrist

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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Emily Wu, MD

Staff Psychiatrist

Dr. Emily Wu has dedicated over a decade to the study and treatment of psychiatric and neurocognitive disorders, with a particular focus on advanced mediation management and cutting-edge therapies such as Transcranial Magnetic Stimulation (TMS) and Spravato. She is board-certified by the American Board of Psychiatry and Neurology. Dr. Wu completed her residency in General Psychiatry at the University of Texas at Houston, where she trained at one of the national largest psychiatric hospitals. She also holds a Ph.D. in Biomedical Science from the University of Texas at Houston.

Dr. Wu has extensive experience in applying holistic approach on treating psychiatric illness country and has earned her a strong reputation among her patients. She is also deeply committed to advancing research in psychiatric disorders, particularly neurocognitive disorders. As a teaching physician at the University of Texas at Houston's General Psychiatry Residency Program, Dr. Wu is passionate about educating the next generation of psychiatrists.

In addition to her clinical work, Dr. Wu has published numerous peer-reviewed articles and serves on committees for several prestigious organizations, including the American Society of Clinical Psychopharmacology, the American Academy of Addiction Psychiatry, and the Texas Society of Psychiatric Physicians' Academic Committee.

Dr. Wu has been recognized with multiple national awards, including the American Association's Research Colloquium for Junior Investigators, the American Academy of Addiction Psychiatry's Ruth Fox Scholarship, and fellowships from the American Society of Clinical Psychopharmacology. She also serves as a reviewer for several scientific journals. Her research focuses on exploring mechanisms and developing novel treatments for psychiatric disorders.

Jerry Sayers, MD

Staff Psychiatrist

Dr. Jerry Sayers is a double board-certified psychiatrist in General Psychiatry and Consultation-Liaison Psychiatry. Dr. Sayers completed an Internal Medicine internship in Youngstown, Ohio. He then completed his residency in General Psychiatry at The Johns Hopkins Hospital followed by fellowship training in Neuropsychiatry and Behavioral Neurology at Johns Hopkins Bayview. He most recently finished his fellowship in Consultation-Liaison Psychiatry at the University of Maryland. Dr. Sayers has had the opportunity to care for a diverse group of patients with neuropsychiatric, neurological, and other general medical conditions. His work allowed him to work on a proactive, collaborative psychiatric consultation team designed to be involved early in the care of vulnerable patients with complex neuropsychiatric conditions. Dr. Sayers has experience in outpatient, inpatient, residential, and partial hospitalization programs. He works hard to tailor therapy to the needs of the individual patient by adapting techniques that have been successful across different treatment settings. His desire to ensure exceptional care is evident in his ability to relate to and understand an individual patient's needs and concerns.

Gihan Abdel Razik, MD

Staff Psychiatrist

Dr Razik is a board-certified psychiatrist who has been practicing for over 20 years. Throughout her career she has helped thousands of patients overcome their mental health struggles through medication management and a combination of supportive and psychodynamic psychotherapy. She graduated from Ain Shams University School of Medicine in 1992 and went on to do her psychiatry residency training at the University of Cincinnati Medical Center, after which she became board-certified as Dr. Razik has practiced psychiatry in various settings including private practice where she has experience managing patients with depression, anxiety, bipolar disorder, OCD, ADHD, panic disorders and post-traumatic stress disorder. Early on in her career she worked with veterans at the Dayton VA Medical Center as well as with the severely mentally ill patients in community mental health. Dr. Razik lives in Mason, Ohio. In her free time, she enjoys hiking, reading, cooking, traveling, and spending time with her family.

Jennifer Shoenfelt, MD

Staff Psychiatrist

Dr. Jennifer Shoenfelt is a staff psychiatrist at Talkiatry. She is double board certified in child and adolescent psychiatry and adult psychiatry. She has been practicing for over 14 years. Dr. Shoenfelt's practice focuses on child and adolescent medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. However, occasionally Dr. Shoenfelt may believe that additional therapy is needed and will ask that you bring a therapist into your care team to provide the best outcome. She provides treatment plans that include holistic recommendations for diet, exercise, and educational and psychosocial/spiritual aspects of care. She is known for listening to and respecting patients' stories and walking them on a path of recovery and growth. Dr. Shoenfelt received her medical degree from the Boonshoft School of Medicine at Wright State University in Dayton, Ohio. She earned her Bachelor of Science degree in Physical Therapy from The Ohio State University. Dr. Shoenfelt practiced for 14 years in physical therapy with a specialization in children with developmental and neurological disabilities before attending medical school. Dr. Shoenfelt has held multiple positions in hospital and outpatient psychiatry, including community mental health, developmental and foster care settings, and medical director positions. She has served as clinical faculty for both the Wright State Department of Psychiatry and the University of Cincinnati School of Medicine. She has a passion for the education of medical students, residents, and patients. Dr. Jennifer Shoenfelt is a staff psychiatrist at Talkiatry. She is double board certified in child and adolescent psychiatry and adult psychiatry. She has been practicing for over 14 years.

Ana Castro, LMHC

Staff Licensed Mental Health Counselor

Ana Castro, LMHC received a Master of Science in Mental Health Counseling from Queens College, City University of New York. She completed training at F.E.G.S and has worked in community mental health and outpatient hospital-based settings. Ana has 7 years of experience working with individuals as well as with children and families treating anxiety, depression, family and relationship issues, and other mental health issues. Ana uses methods from psychoanalysis, CBT, DBT, along with light supportive therapy in order to provide a person-centered approach. She began by working at New York Psychotherapy and Counseling Center, working with individuals, as well as children and families in a high-risk area, providing family therapy, psychodynamic and behavioral therapy, and assisting with the coordination of care with outside agencies. Ana has worked at St. Joseph's Outpatient Behavioral Health Clinic treating patients with various psychiatric illnesses. She has also worked at St. Vincent's- Westchester Outpatient Behavioral Health Clinic, providing intake, diagnosis, and individual therapy to a population ranging from adolescents to late adults. Ana continues to work towards expanding her knowledge of evidence-based approaches in order to provide the best outcomes.

Sophie Weinberg, MD

Staff Psychiatrist

Dr. Sophie Weinberg is a compassionate and deeply dedicated physician, dually board-certified in Child, Adolescent, and Adult Psychiatry. Her journey through medicine has been shaped by rich and diverse training—completing her General Psychiatry residency at Maimonides Medical Center in Brooklyn, NY, and her fellowship in Child and Adolescent Psychiatry at Nassau University Medical Center in Long Island, NY.

Dr. Weinberg approaches healing as both a science and an art. Her care is profoundly patient-centered, collaborative, and holistic, honoring the intricate connection between body, mind, and spirit. She believes in the quiet power of nourishment, restful sleep, joyful movement, and meaningful connection as essential threads in the fabric of wellness.

With extensive experience in treating a wide spectrum of conditions—including mood disorders, anxiety, trauma, ADHD, and sleep disturbances—Dr. Weinberg tailors her approach to each individual’s unique story. She is a proud and affirming ally to the LGBTQIA community, creating a space where all identities are seen, respected, and supported.

Her treatment model includes thoughtful, personalized medication management, with generous 30-minute follow-up sessions to ensure care is never rushed and always attuned to the patient’s evolving needs. When appropriate, Dr. Weinberg may gently recommend the added support of a therapist, recognizing that healing is often a shared and layered journey.

With a heart rooted in empathy and a mind guided by clinical excellence, Dr. Weinberg walks beside her patients on the path to well-being—honoring their resilience and helping them rediscover their wholeness.

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Rajesh Gaddam, MD

Staff Psychiatrist

Dr. Rajesh Gaddam is a Board Certified Psychiatrist who provides compassionate and empathic care. Prior to his formal training, he worked in clinical psychiatric research at Northwell, gaining experience in evidence-based medicine. He completed his adult psychiatry residency at Bergen New Bridge Medical Center, followed by Child & Adolescent Psychiatry Fellowship at The University of Chicago, where he served as Chief Fellow. Dr. Gaddam treats children, adolescents, and adults for a range of conditions including anxiety, depression, bipolar disorder, trauma, OCD, ADHD, and substance use disorders. Dr. Gaddam emphasizes a collaborative and comprehensive approach to understand a person's life, their circumstances, and what has contributed to their symptoms. He recommends including a family member or close friend in at least one session to get a sense of challenges from a different perspective. Besides using elements of supportive and psychodynamic psychotherapy, Dr. Gaddam will refer and work with your psychotherapist to foster self-reflection and growth. He also greatly values a holistic approach to treatment, emphasizing the importance of nutrition, physical activity, sleep hygiene, mindfulness, and a support system to well-being. He wishes to provide a safe space to promote healing and wellness, so individuals can prosper in their lives.

Catherine Derys, LMHC

Staff Licensed Mental Health Counselor

Catherine is a graduate from the City University of New York (CUNY) Brooklyn College where she received her Master's Degree in Mental Health Counseling. She is a Licensed Mental Health Counselor experienced in working with adults that struggle with an array of different issues for the past 7 years, both in outpatient and private practice settings. Coupled with her empathic and non-judgmental attitude, she uses a person-centered approach when working with clients. She strives to meet the clients where they are at. Catherine has a passion for helping others reach their full potential, rebuild their confidence, and gain a better insight into themselves through using psychodynamic and CBT interventions. She promotes and encourages "progress over perfection."

Derek Robben, MD

Staff Psychiatrist.

Dr. Robben proudly served in the U.S. Air Force and has been practicing psychiatry for 17 years. He is happy to have completed his medical school education, as well as his residency in general psychiatry and fellowship in addiction psychiatry, all at the University of South Florida in Tampa. Dr. Robben is board certified in both general psychiatry and addiction psychiatry. He has experience in many roles over the span of his career to include working with Veterans diagnosed with posttraumatic stress disorder and substance use disorders, managing specialty clinics for patients with treatment-resistant depression, and working in general outpatient psychiatry clinics, as well as emergency and inpatient psychiatric settings. Dr. Robben also previously served as the Training Director for the University of South Florida Morsani College

of Medicine Addiction Psychiatry Fellowship Program. He is currently the Medical Director at a residential substance use disorder treatment center in Florida. Additionally, Dr. Robben is a certified Medical Review Officer and has additional qualifications in transcranial magnetic stimulation (TMS) and Spravato.

(esketamine). Dr. Robben has been voted as Addiction Medicine "Top Doctor" in Tampa Bay, FL by physicians for 8 of the last 9 years. Dr. Robben specializes in treating depression, bipolar disorder, anxiety, PTSD, OCD, ADHD and substance use disorders.

Dr. Robben uses a supportive, patient-centered approach, taking into account each individual's personal values and goals when formulating a treatment plan. He educates patients on the most up to date scientific evidence and provides multiple treatment options to help each person determine the most appropriate plan for them.

Dr. Robben believes in a collaborative and holistic approach to working with his patients. Dr. Robben spends a significant amount of time educating his patients on all forms of mental health treatment, from medications and psychotherapy, to nutrition, exercise, meditation and sleep hygiene. What works well for

One person may not work well for another person. Having options and understanding the potential benefits and risks of each treatment empowers patients to take an active role in their own healthcare.

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Darcie Farrell, PMHNP

Education and training

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