Rebecca Farias, MD

Background  and credentials    

Dr. Ruiz is a board-certified psychiatrist specializing in psychiatric  diagnosis and treatment for anxiety disorders, mood disorders, trauma and  stressor-related disorders, ADHD, and pregnancy-related psychiatric conditions.  She received her bachelor's degree in chemistry, graduating Magna Cum Laude  from the Honors College. Dr. Ruiz completed medical school at Texas Tech  University Health Sciences Center, followed by four additional years of  psychiatric residency training. Her diverse professional experience includes  working in psychiatric hospitals, outpatient clinics, intensive outpatient  programs (IOP), partial hospitalization programs (PHP), emergency rooms, and  academic teaching environments. Dr. Ruiz has authored research publications  and received multiple awards, including the AWP International Fellowship  Award and the ADMSEP Innovations Award.    

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Treatment approach  

Dr. Ruiz emphasizes an integrated approach, combining medication management  and therapy. This method is supported by research indicating improved patient  outcomes. She remains current with the latest literature and treatment  guidelines to ensure evidence-based care.    

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What you can expect in a first visit    

Patients can anticipate a thorough initial evaluation during their first  visit with Dr. Ruiz. She conducts a comprehensive assessment to understand  the patient's symptoms, history, and personal circumstances. This session  sets the foundation for collaboratively developing an individualized  treatment plan focused on the patient’s specific needs and goals.    

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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. Macdonnell is a double-boarded psychiatrist with over 25 years of experience in adult psychiatry and geriatric psychiatry. Dr. Macdonnell focuses on treating individuals with medication management. Supportive and interpersonal therapy is incorporated as needed. When additional therapy or longer sessions are necessary to enhance the individual's treatment, she invites a therapist to become a member of your care team. Dr. Macdonnell attended undergraduate school at Manhattan School of Music earning a bachelor's and master's degree in violin performance and musicology. She then attended the City University of New York � Hunter College campus majoring in premedical sciences. Dr. Macdonnell attended Albert Einstein College of Medicine in the Bronx, New York, earning a degree in MD. She completed an internship in internal medicine before entering psychiatry residency at New York-Presbyterian Hospital � Westchester Division. After completing her residency, she stayed for an additional year, completing a fellowship in geriatric psychiatry. She was promoted to Attending Psychiatrist and Unit Chief of the Geriatric Partial Hospital Program. After two years in academic psychiatry, she entered private practice in New York and Connecticut for 8 years. She then served 2 years in the National Health Service providing outpatient care to an underserved area in central Florida. Moving to Georgia, she has worked in private practice and academic psychiatry at Mercer University College of Medicine before moving on to Veterans' care at Atlanta VA and Carl Vinson VA Medical Center. While Dr. Macdonnell has a wide range of experience, she focuses on general adult psychiatry.

Dr. Rebecca Crosbie is a board-certified adult psychiatrist and has been practicing in outpatient psychiatry for nearly 7 years. Her practice focuses on medication management, and she typically offers medication management combined with supportive therapy or Cognitive Behavioral Therapy (CBT) in 30 minute follow-up visits. If Dr. Crosbie feels you would benefit from working with a dedicated talk therapist, she may encourage you to pursue this or refer you in order to achieve the best outcome. Dr. Crosbie is a graduate of Michigan State College of Human Medicine. She completed her psychiatry residency at Pine Rest/Michigan State University in Grand Rapids, MI. She has previously worked as an outpatient psychiatrist and in tele-psychiatry. She has a lot of experience treating patients with a broad array of mental health conditions, including: anxiety disorders, depression, OCD, bipolar disorder, and ADHD. She also treats combined mental health diagnoses such as ADHD plus another diagnosis. She also has a lot of experience working with patients who identify as LGBTQI+. Her approach is always to meet the patient where they are and educate and enable patients to make good choices about treatment that are in line with their personal preferences and values.

Dr. Matthew Hamilton is a psychiatrist who works with adults at all stages of life in improving mental health. He emphasizes a holistic approach in collaboration with patients to help them identify and achieve their goals. He has experience helping adults from a diversity of backgrounds with depression, anxiety, bipolar disorder, PTSD, panic, OCD, ADHD, substance use and autism spectrum disorder. He offers one-hour initial consultation appointments, as well as 20 to 30 minutes for follow-up visits. Dr. Hamilton received his undergraduate education at the University of Texas at Austin, his medical degree at Texas Tech University Health and Sciences Center, and completed his residency training at the University of Texas Medical Branch. During training he worked primarily with adults in local clinics and acute care hospitals in the greater Houston area. He was honored with an award for his accomplishments in psychotherapy during his senior year of residency. Dr. Hamilton offers his expertise in both medication management and psychotherapy in his practice, including cognitive, behavioral, motivational, and supportive therapies. He will collaborate with your therapist when you are working with one and may offer a referral to a specialist therapist if indicated.

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner dedicated to helping people struggling with mental health concerns find ways to live a full and balanced life. Rebecca's practice focuses on medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy during 30-minute follow-up visits. However, occasionally Rebecca may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She received her Master of Science in Nursing with a specialty in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. She is trained in psychiatric diagnosis, medication management, and psychodynamic and cognitive-behavioral therapies. Rebecca has extensive experience evaluating and treating adults in a variety of settings over the past 10 years. Previously, she worked at Elmhurst Hospital's Comprehensive Psychiatric Emergency Program and at Gracie Square Hospital in an inpatient unit, in addition to community health settings and skilled nursing facilities. As a nurse practitioner, she believes that addressing mental health concerns is just as important as addressing physical concerns. She values the therapeutic relationship with a collaborative and empathic approach to treatment.

Dr. Zhou is a board-certified psychiatrist who has more than 4 years of experience practicing in various clinical settings with an emphasis on mental health care in outpatient settings. She practices a holistic approach to developing an individualized plan to work toward a patient's goals. Dr. Zhou is experienced in treating depression, bipolar spectrum disorders, obsessive-compulsive disorders, post-traumatic stress disorder, generalized anxiety, and other related psychiatric disorders. Dr. Zhou received her medical degree from Texas Tech University Health Sciences Center School of Medicine and completed her adult psychiatry residency training at LSU Health Shreveport. Dr. Zhou's background and experiences have broadened her understanding of cultural stigmas and the relationship it plays in psychiatric care. She incorporates a multitude of treatment modalities such as supportive therapy, cognitive behavioral therapy, and mindfulness practices as an adjunct to pharmacotherapy. Dr. Zhou recognizes the value of a multifaceted approach to wellbeing and may recommend treatment modalities that are complementary to medication management.