Avishay Adri, PMHNP

Dr. Connie Hsiao is a double board-certified Adult and Child & Adolescent Psychiatrist. She earned her medical degree from Texas A&M College of Medicine, completed her Adult Psychiatry Residency at UT Health San Antonio, and pursued Child & Adolescent Psychiatry Fellowship at Baylor College of Medicine. Dr. Hsiao has extensive experience treating diverse patient populations across various clinical settings.

Dr. Hsiao values open communication, collaboration, and building a safe, supportive environment where patients feel heard and respected. She treats a wide range of mental health concerns—including depression, anxiety, ADHD, and life transitions—in children, adolescents, and adults. She emphasizes trust and mutual understanding in the therapeutic relationship.

In the initial visit, Dr. Hsiao conducts a comprehensive evaluation to understand each patient’s unique history, concerns, and goals. She utilizes evidence-based medication management alongside therapeutic strategies to create personalized treatment plans that reflect and support her patients’ needs and aspirations.

Dr. Sharon Kahler is Board Certified in Adult and Child & Adolescent Psychiatry and treats patients of all ages. She has over a decade of experience in both community mental health centers and private practice, working with individuals from diverse backgrounds. She earned her medical degree from New York Medical College, completed Adult Psychiatry Residency at New York-Presbyterian/Weill Cornell, and completed Child and Adolescent Fellowship training at NYU Langone and Bellevue Hospital. Her clinical interests include mood and anxiety disorders, PTSD, and childhood psychiatric disorders.

Dr. Kahler is committed to providing compassionate, high-quality mental health care. She fosters a therapeutic, nonjudgmental environment where patients can openly share their concerns and values. Viewing treatment as a partnership, she encourages patients to play an active role in their care and takes a whole-person approach, considering lifestyle, environmental, and social factors that contribute to healing.

Dr. Kahler begins with a comprehensive assessment to understand each patient’s history, background, and treatment priorities. She develops individualized treatment plans using evidence-based approaches, supporting patients in navigating life’s challenges and finding a path to mental wellness.

Dr. Roxanne McClung is completing her General Psychiatry Residency at the University of Texas Health Science Center at Tyler, where she serves as Chief Resident. She earned her MD from the American University of the Caribbean and holds a Master of Science in Clinical Psychology from the University of Texas at Tyler and a BA in Psychology from Southern Methodist University. With over 20 years of experience in mental health, she has worked as a case manager, psychotherapist, and program/clinical director.

Dr. McClung is passionate about helping people through life’s challenges. She creates a non-judgmental, patient-centered environment that fosters open communication and collaboration. She emphasizes individualized care and integrates lifestyle medicine and psychotherapy, primarily using Cognitive Behavioral Therapy and Cognitive Processing Therapy.

Dr. McClung begins with a thorough assessment to understand each patient’s history, concerns, and goals. She works collaboratively to create a personalized treatment plan that may include medication and evidence-based therapy. Her approach ensures clarity, respect, and patient involvement throughout the process.

Dr. Dominique Holley is a triple board-certified psychiatrist in Adult Psychiatry, Child and Adolescent Psychiatry, and Addiction Medicine. Dr. Holley completed her post-doctoral residency and fellowship training at Walter Reed National Military Medical Center. She has served as an active US Army officer and recently separated from the US Army after 11 years of service. In her most recent role, she served as the Deputy Chief of the Department of Behavioral Health at Fort Campbell, KY where she provided clinical and administrative supervision, as well as mentorship and guidance for an interdisciplinary team of over 140 personnel. She maintained oversight of behavioral health care being delivered through 11 clinics and satellite locations, providing patient care for over 30,000 beneficiaries. While in leadership, she continued to provide direct patient care for service members and dependents including child and adolescent populations. Due to her experience with this unique population, she has extensive experience in treating individuals with trauma. She offers an holistic approach when caring for individuals dealing with mental illness as well as phase of life circumstances. She believes in treating the whole person and attending to physical, spiritual, and mental health. Dr. Holley provides supportive, cognitive behavioral, acceptance and commitment, and psychodynamic therapy skills that complement medication management in order to help improve wellness.

Getting to know me...
Dr. David Weber is a highly experienced psychiatrist and medical doctor with dual specialties in psychiatry and primary care medicine. His comprehensive approach integrates both disciplines, allowing him to address mental health concerns with a deep understanding of their medical and psychological aspects.

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Dr. Weber earned his Doctor of Medicine (MD) from Southern Illinois University School of Medicine and pursued advanced training at Walter Reed Army Medical Center, Harvard University, and Georgetown University Medical Center. He is Board-Certified in General Psychiatry and Fellowship-Trained in Forensic Psychiatry and Occupational Medicine, equipping him with the expertise to diagnose and treat a broad spectrum of mental health conditions, considering both medical and psychiatric factors.

What should a new patient know about working with you?
Believing that each patient is more than a diagnosis, Dr. Weber takes a personalized approach, collaborating closely with individuals to develop tailored treatment plans. He views himself as an advisor and facilitator, empowering patients to take charge of their recovery.

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Areas of Focus:
ADHD (Focus & Cognitive Function)
Anxiety & Depression (Mood, Sleep, & Energy Concerns)
Stress & Brain Fog (Cognitive & Emotional Well-Being)

What is your typical process for working with patients?
Dr. Weber is an experienced, compassionate, and dedicated advocate for his patients' mental and physical health. He strongly believes in a collaborative, patient-centered approach to treatment, helping individuals achieve their personal and professional goals.
Committed to a well-balanced life, Dr. Weber is married and has two married daughters, two grandsons and three dogs. His wife, a clinical psychologist, helps ground his therapeutic approach, emphasizing the importance of integrating therapy with medication to enhance overall well-being. Guided by the ethos, "Treat them like you would your own family," he is dedicated to providing compassionate, high-quality care.

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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