Cherie Tubeileh, PMHNP

Dr. Koster is board certified in psychiatry and forensic psychiatry. After completing her medical education, residency, and fellowship, she started working on a Forensic Assertive Community Treatment (FACT) team, followed by working at a community hospital. She then transitioned to a clinic serving patients who were determined severely mentally ill (SMI). Dr. Koster has been involved with teaching residents and working within an academic institution. Dr. Koster is a Fellow of the American Psychiatric Association, a member of the American Academy of Psychiatry and the Law and the American Osteopathic Association. Dr. Koster enjoys working with people of diverse backgrounds and experiences. She uses a culturally sensitive and holistic approach in the evaluation and treatment of brain health conditions. She believes in a team approach and her patients' active participation in treatment planning. She incorporates a variety of modalities in her treatment that can include medications, personal medicine, psychotherapy, mindfulness, and lifestyle changes. Dr. Koster specializes in psychopharmacology and believes in using medications when indicated at the lowest effective dose to minimize the risk of side effects. She is experienced in treating depression, bipolar disorder, anxiety disorders, OCD, PTSD and schizophrenia. If Dr. Koster believes you would benefit from additional therapy, she will collaborate with your therapist to achieve the best outcome.

Kenneth Kavanagh is board certified as both a Psychiatric/Mental Health Nurse Practitioner and an Adult Nurse Practitioner.  His career has spanned 30 years with the last 17 years devoted exclusively to psychiatry.  He integrates his knowledge of psychiatry and primary care into evidence-based medication management strategies.  He also possesses a good working knowledge of alternative treatments and integrating alternative treatments into more traditional approaches.  When needed to enhance patient care outcomes, he frequently works collaboratively with psychotherapists, primary care providers, and/or medical specialists.  

Kenneth currently focuses on managing depressive disorders, anxiety disorders, adjustment disorders, ADHD, somatic disorders, OCD, and bipolar disorders.  Kenneth has significant experience in working with diverse groups, including urban and rural populations across socioeconomic spectrums, professionals and college students on all levels, members of the LGBTQ community, individuals confronting life stage transitions, and people living with chronic medical conditions.  

Kenneth’s psychotherapeutic methods are diverse and evolve to meet collaboratively developed treatment goals.  Kenneth’s interaction style is always empathic and respectful but can range from comforting and supportive to more directive and therapeutically confrontational strategies to maximize treatment goals, often with significant doses of humor throughout the therapeutic relationship.

Dr. Krista Alexander is a board-certified psychiatrist who loves equipping her fellow human beings to feel and function better. She studied medicine at the University of Texas Southwestern Medical School and completed her residency at Duke University. She has worked in both private practice and integrated primary care/behavioral health care settings. She is a member of the American Psychiatric Association and the North Carolina Psychiatric Association. Krista offers medication management and supportive psychotherapy for mood disorders, anxiety disorders, trauma, ADHD, substance use disorders, and other mental health issues. She strives to embody "relational prescribing” and believes that med management is most effective in the context of a relationship of mutual trust, emotional safety, and shared decision-making between provider and patient. She has trained in psychodynamic psychotherapy and various forms of cognitive behavioral therapy, and tailors her approach to each patient's individual strengths and needs. Krista understands that the needs of the whole person must be addressed in order to facilitate growth and healing. She enjoys collaborating with fellow medical/mental health providers to address a patient's complex needs as an integrated team.

Our team of professional healthcare writers work closely with our clinical staff and are trained in scientific research methods. As a medical practice, we adhere to principles of evidence-based medicine and are dedicated to bringing you accurate, accessible, and up-to-date information.

Dr. Orejarena is board certified by the American Board of Psychiatry and Neurology. She finished her residency from Yale University and the University of Texas Houston. She has done extensive research on psychiatry during her PhD in Neuropsychopharmacology and a Master's in Neuroscience. She is bilingual in Spanish and English. She incorporates different therapy modalities and evidence-based treatments, tailored to each person's needs. She enjoys applying her knowledge in neuroscience and pharmacology into her clinical practice and believes a combination of medication and psychotherapy yields the best treatment outcomes.

Her ultimate goal is to help patients feel their best and accomplish their own goals by developing tools to navigate internal or external obstacles that are part of life. Dr. Orejarena is originally from Colombia, where she earned her medical degree from Universidad Industrial de Santander. She pursued a Master's in Neuroscience at the University of Barcelona and a PhD in Neuropharmacology at the Universidad Pompeu Fabra in Barcelona, Spain. Her PhD thesis was honored summa cum laude.

She completed a postdoctoral fellowship training at the Institut de Neurobiologie de la Mediterranee in Marseille, France. She is the author of multiple peer-reviewed publications and has presented her research at national and international meetings. Over the years, she has worked in a variety of settings including outpatient clinics, acute care, psychiatric hospitals as an Assistant Professor of Psychiatry at the University of Texas Health Sciences Center.‍‍

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.‍