David Jiang, MD

Dr. Earl De Guzman is a psychiatrist who values therapeutic partnership, working with patients to balance symptom relief with meaningful self-exploration. He earned his BS in Psychology from the University of California, Davis, and his MD from Ross University School of Medicine. He completed his psychiatry residency at Los Angeles County + University of Southern California Medical Center and a consultation-liaison psychiatry fellowship at Stanford University Medical Center. He is triple-board-certified in psychiatry, consultation-liaison psychiatry, and addiction medicine, and holds psychoanalytic psychotherapy training certification from the Psychoanalytic Center of California. Currently, he is a psychoanalyst-in-training at the New Center for Psychoanalysis. His expertise spans medication management, supportive therapy, and psychodynamic therapy.

Dr. De Guzman takes a collaborative, patient-centered approach, creating a warm and nonjudgmental environment. He listens deeply, asks thoughtful questions, and encourages honest exploration of symptoms and underlying patterns. He values authenticity, curiosity, and respect for each patient’s unique experiences. While symptom relief is important, his goal is to foster self-understanding and long-term growth. He works best with patients open to collaboration and motivated for change, whether through medication management, therapy, or both.

Dr. De Guzman begins with a consultation phase to ensure a good fit, listening carefully to understand each patient’s challenges and goals. Together, he and his patients build a working alliance by clarifying difficulties, identifying realistic changes, and exploring deeper patterns. When appropriate, he prescribes medication thoughtfully, aiming to support therapy rather than replace it. Each session integrates supportive and psychodynamic elements, combining medication review with therapeutic dialogue. Treatment plans are regularly revisited, allowing flexibility and growth, with the ultimate aim of empowering patients toward lasting change.

Dr. Theresa Colberg is a board certified adult psychiatrist. She offers guidance with navigating difficult and painful emotions that may result from stressful life situations, such as the loss of or separation from a loved one, work related stressors, burn out, adult and childhood trauma, OCD and mood disorders including major depressive disorder, bipolar disorder, and various anxiety disorders. Within a safe, and supportive working relationship, Dr. Colberg will strive to reach an understanding of your unique situation, identify the issues that are interfering with progress, and develop a plan to better identify and achieve your goals.

Previous to joining Talkiatry, Dr. Colberg served as a clinical psychiatrist for the VA Healthcare System, providing care for veterans with a predominant focus on treatment of post traumatic stress disorder. She has also worked collaboratively as an integrated psychiatrist for a primary care FQHC, treating primarily trauma and stressor related disorders within a primary care setting.

Dr. Colberg completed her Psychiatry Residency from Mount Sinai-Beth Israel in New York City and obtained her medical degree from Temple Medical School in Philadelphia. She offers 60-minute initial appointments and 30-minute follow-up appointments, and she won't hesitate to collaborate with other mental health experts as necessary to better support your needs.

Dr. Kethini is a board-certified psychiatrist in General psychiatry. She completed her medical degree at St. George's University School of Medicine in Grenada. After completing her residency at Bergen New Bridge Medical Center, she transitioned to an attending psychiatrist at the same place where she completed her residency. During her initial years as an attending, she took care of her own patients and supervised third year residents in the outpatient setting. After a few years, she transitioned to an inpatient setting, where she treated both voluntary and involuntary patients. She also continued to evaluate patients in the emergency room as part of the call group for the last 8 years. ‍Dr. Kethini is passionate about and very experienced in providing a holistic approach along with evidence-based care for patients battling depression, anxiety, bipolar disorder, OCD, ADHD, and PTSD. She integrates supportive psychotherapy along with medication management and lifestyle changes such as nutrition, exercise, sleep hygiene, and stress management. She is focused on having a collaborative approach to treatment and forming a therapeutic alliance with every single patient under her care.

Dr. Jacqueline Lewandowski is a board-certified physician specializing in adult psychiatry. She obtained her undergraduate degree from New York University where she studied psychology and child/adolescent mental health. Dr. Lewandowski received her medical degree from St. George's University in Grenada, before moving back to New York to complete her residency at Morningside and West Mount Sinai Hospitals. Since completion of training, Dr. Lewandowski has practiced and held teaching positions in both the Comprehensive Psychiatric Emergency Department of Harlem Hospital and the inpatient units and psychiatric emergency rooms of Morningside and West Hospitals. Dr. Lewandowski has a wide range of experience treating a diverse spectrum of psychiatric diagnoses and populations. She strongly believes in tailoring treatments through a holistic and patient-centered lens based on individual and multi-faceted histories. During 30-minute monthly sessions, Dr. Lewandowski focuses on collaborating with patients using evidence-based treatments with an emphasis on medication management in conjunction with supportive therapy. Additionally, she may recommend bringing a therapist into your care team to help facilitate a more comprehensive treatment plan. Dr. Lewandowski looks forward to working with you to help achieve and optimize your wellness and improve your quality of life.

Dr. Anne Rohs is board certified in both adult and geriatric psychiatry and has practiced psychiatry for over 10 years. She has extensive experience treating critically ill patients in hospital settings. This experience allowed her to hone skills necessary to care for individuals with complex psychiatric illnesses complicated by medical conditions. Dr. Rohs' approach to care involves providing a consistent, empathic, non-judgmental space to develop and attain shared treatment goals. She is committed to developing a partnership that is always respectful of patients' points of view, and she utilizes this knowledge to inform treatment plans that are safe, effective, and agreeable to patients. At the same time, she is sensitive to financial or insurance coverage factors that may impact treatment. After completing residency training at Montefiore Medical Center, Dr. Rohs was invited to serve an additional year as Senior Chief Resident for its adult psychiatry residency training program. She spent the next year as a fellow in Geriatric Psychiatry before her appointment as an attending physician on Montefiore's acute psychiatric inpatient unit. During her training years, Dr. Rohs made several trips to Uganda to serve as an attending physician with the Doctors for Global Health Project. Dr. Rohs subsequently transferred to Bronx Psychiatric Center (BPC), where she treated inpatients and outpatients suffering from severe mental disorders. At BPC, she expanded her knowledge base and became an expert in advanced psychopharmacology. Dr. Rohs also spent time prior to joining Talkiatry as an attending physician at NYU Langone Hospital. Dr. Rohs specializes in treating a variety of psychiatric conditions including mood disorders, psychotic disorders, anxiety disorders, PTSD, and dementia. She is attuned to the direct and indirect mental health impact of the pandemic and its aftermath on patients of all ages. Dr. Rohs does not usually treat ADHD patients. For the small number of patients she treats who have ADHD, Dr. Rohs requires comprehensive testing, multiple follow ups, and a full medical workup before confirming a diagnosis to ensure appropriateness and safety of chosen treatment.Dr. Anne Rohs is board certified in both adult and geriatric psychiatry and has been in practice for over ten years. She has an extensive background working in hospital settings treating critically ill patients. This experience has helped hone her skills in caring for individuals with complex psychiatric illnesses complicated by medical conditions. Dr. Rohs’ approach is to provide a consistent, empathic, non judgmental space to develop and attain shared treatment goals. Dr. Rohs is committed to developing a partnership which is always respectful of patients’ points of view, and she utilizes this knowledge to inform treatment plans that are safe, effective and agreeable to patients. She is sensitive to financial or insurance coverage factors that may impact treatment.

After completing residency training at Montefiore Medical Center, Dr. Rohs was invited to serve an additional year as Senior Chief Resident for their adult psychiatry residency training program. She spent the following year as a fellow in Geriatric Psychiatry before being appointed an attending physician on Montefiore’s acute psychiatric inpatient unit. Dr. Rohs subsequently transferred to Bronx Psychiatric Center, where she treated patients suffering from severe mental disorders in both inpatient and outpatient settings. As a result, she further expanded her knowledge base and became an expert in advanced psychopharmacology. Prior to joining Talkiatry, Dr. Rohs served as an attending physician at NYU Langone Hospital. She has also been an attending physician for the Doctors for Global Health Project in Uganda.

Dr. Rohs specializes in treating a variety of psychiatric conditions including schizophrenia, bipolar disorder, generalized anxiety disorder, depression, and dementia. She is attuned to the direct and indirect mental health impact of the pandemic on patients of all ages. As the Covid situation evolves, Dr. Rohs is available to see patients either in the office or via telehealth platforms.

Dr. Rohs does not usually treat ADHD patients. For the small number of patients she treats who have ADHD, Dr. Rohs requires comprehensive testing, multiple follow ups, and a full medical workup before confirming a diagnosis to ensure appropriateness and safety of chosen treatment.

Dr. Stephen Byrd is a clinical psychiatrist at Talkiatry. He is board-certified in both psychiatry and addiction medicine. He has been practicing for over 31 years in a wide variety of settings, including working with inpatients and outpatients in private practice, community mental health, geriatric, VA, and community hospital/medical center settings. Dr. Byrd's practice focuses on evidence-based medication management, usually provided in conjunction with 30-minute supportive psychotherapy, which is informed by cognitive behavior therapy, psychodynamic psychotherapy, and motivational enhancement. When more intensive therapy is needed, Dr Byrd may ask you to include a therapist as part of your care team. He received his medical degree from the University of Cincinnati College of Medicine in Ohio and completed his residency training in psychiatry at Case Western Reserve University School of Medicine, University Hospitals of Cleveland. Throughout his career, he has treated patients with a wide variety of conditions in both inpatient and outpatient settings. Additionally, He has served as director of inpatient geropsychiatry at Lutheran Hospital in Cleveland, Ohio, program manager of the substance abuse treatment program at the Charlie Norwood Veterans Affairs Medical Center in Augusta, Georgia, and medical director of outpatient behavioral health at Saint Alphonsus Regional Medical Center in Boise, Idaho. Throughout his career, Dr. Byrd has been active in training medical students and psychiatry residents, and he has held clinical teaching appointments at Case Western Reserve University School of Medicine, Northeastern Ohio Universities College of Medicine, Medical College of Georgia, University of Washington School of Medicine, Idaho College of Osteopathic Medicine and Pacific Northwest University of Health Sciences College of Osteopathic Medicine.�.�