Marnie Stefan, MD

Dr. Zadoo graduated from the University of Texas at Austin. She attended medical school at Texas Tech University Health Sciences Center and went on to complete her residency at UT Health San Antonio.

Dr. Zadoo is passionate about getting to know her patients and helping them live happier, healthier, and more productive lives. She specializes in treating a wide range of mental health conditions, including depression, anxiety, bipolar disorder, OCD, and trauma-related disorders. Her approach is rooted in empathy, active listening, and shared decision-making. She believes that every patient’s story matters and tailors treatment plans to meet each patient’s needs, values, and goals. By fostering a safe and respectful space, Dr. Zadoo helps patients navigate times of stress, life transitions, behavioral problems, communication issues, relationship difficulties, poor self-esteem, grief, loss, and other concerns.

Dr. Zadoo first completes an initial psychiatric evaluation to establish diagnoses and create a comprehensive plan for treatment. She is passionate about forming a strong therapeutic alliance and empowering patients to improve their lives through a variety of holistic modalities. While medications are a mainstay of psychiatric care, Dr. Zadoo is also skilled at using existential, psychodynamic, cognitive behavioral, and Gestalt psychotherapy techniques.

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Dr. Kerry O'Leary is a board-certified adult psychiatrist who joined Talkiatry after she completed her psychiatry residency. Dr. O'Leary provides patient-centered care and understands the importance of actively involving patients in their treatment journey. She believes that every patient deserves personalized care tailored to their unique needs and circumstances. She utilizes evidence-based treatments combined with a comprehensive approach to address not only the symptoms but also the underlying factors contributing to her patients' distress. Although her practice focuses on medication management, she also provides supportive therapy and may recommend more intensive therapy when indicated. Dr. O'Leary approaches each patient with empathy and understanding, fostering a supportive and nonjudgmental environment. Dr. O'Leary completed her undergraduate training at The University of Texas at Austin and pursued her medical degree at The University of Texas Medical Branch in Galveston. She also graduated with a Master's in Public Health from Columbia University in New York. She went on to complete her general adult psychiatry training at Baylor College of Medicine in Houston. Dr. O'Leary focuses on treating the adult population from ages 18+. She utilizes both pharmacological and psychotherapeutic treatment interventions and has experience in treating a variety of diagnoses including depression, anxiety, bipolar disorder, insomnia, PTSD, OCD, and psychotic disorders.

Dr. Perington is a Staff Psychiatrist with Talkiatry. She previously served in the US Air Force, where she completed her residency training in psychiatry (Lackland AFB) and was the medical director for a small-sized mental health clinic (Hill AFB). Dr. Perington uses a person-centered approach to tailor treatment to the individual, with an emphasis on shared decision making. She prefers to focus on psychotherapy and behavioral interventions as a primary part of the treatment plan, in addition to any indicated medication.

Motivation for change is a large part of the healing process, and for many people recovery doesn't happen with medication alone. Dr. Perington asks all her patients to play an active role in their treatment.

A thorough diagnostic assessment with discussion of the best treatment setting and modality, then regular follow up visits with emphasis on psychotherapy in addition to medication management (if indicated).

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. Onah Uwagbai is a board-certified psychiatrist who earned her medical degree from St. George’s University School of Medicine. She completed her psychiatry residency at the University of Kansas Medical Center, where she served as Chief Resident at the Kansas City VA hospital and was recognized for Excellence in Scholarship. Most recently, she worked at the North Texas VA Healthcare System, caring for individuals with treatment-resistant depression and complex psychiatric needs.

Dr. Uwagbai has a passion for supporting individuals with mood disorders, anxiety, trauma, and women’s mental health. She believes healing is best achieved through compassion, collaboration, and respect. Patients can expect a warm, supportive environment where they feel heard and understood, with treatment tailored to their unique history and goals.

Dr. Uwagbai begins with a comprehensive evaluation to understand each patient’s needs and then develops an individualized treatment plan. She draws on evidence-based practices, including expertise in complex cases, and may incorporate both therapy and medication management. Her goal is to empower patients to take an active role in their care while fostering resilience, stability, and long-term wellness.

Dr. Zachary Masuda earned his medical degree at Creighton University School of Medicine in Omaha and completed his Psychiatry residency at Creighton University School of Medicine in Phoenix. He went on to complete an Addiction Psychiatry fellowship at Oregon Health and Science University. During training, he was inducted into the Gold Humanism Honor Society, reflecting his commitment to compassionate care. Dr. Masuda is board-certified in general psychiatry and has experience working in outpatient, residential, and inpatient settings.

Dr. Masuda is dedicated to creating a safe, supportive, and nonjudgmental environment where patients feel heard and respected. He emphasizes open communication to establish clear treatment goals and expectations, ensuring patients are active partners in their care. His approach remains flexible, adapting as treatment evolves to best meet patient needs.

Dr. Masuda begins by gaining a thorough understanding of each patient’s history, concerns, and goals during the initial session. He then develops personalized treatment plans that align with those goals, integrating both medication management and therapeutic interventions. His balanced approach allows for individualized care tailored to support long-term recovery and overall well-being.