Stephen Geisler, MD

Dr. Sarah Guzman earned her medical degree from Baylor College of Medicine and completed her psychiatric residency at UT Southwestern in Dallas, TX. She served as a psychiatrist in the United States Navy and has practiced in inpatient and outpatient settings, including a state-run mental health clinic and as a civilian on a United States Army base. She provides general adult psychiatry and medication management, treating anxiety disorders, OCD, depression, bipolar disorder, ADHD, and PTSD.

Dr. Guzman strives to create a supportive, judgment-free space where patients feel heard and respected. She values psychoeducation so patients can make informed decisions about their care. Honesty, mutual trust, and clear communication are central to her approach, as she views treatment as a collaborative partnership focused on shared goals.

The initial appointment centers on understanding each patient’s history and concerns. By the second session, treatment goals are identified. From there, Dr. Guzman collaborates with patients to develop individualized treatment plans and adjust care as needed to support meaningful progress.

Dr. Aisling Rea is a dedicated therapist with an extensive educational background and experience in the field of psychology. She earned a Bachelor of Science at Florida Atlantic University, completed a Master of Science at Florida International University and a Doctorate in Psychology at Walden University. During her internship at Youth Automotive Training Center and The Humanistic Center for Counseling Services, Dr. Rea worked with individuals, families, couples, first responders and high-risk populations, having the opportunity to work with a variety of clients. As a professional, Dr. Rea gained valuable experience working in inpatient and outpatient programs and settings. Dr. Rea has a passion in helping clients heal from depression, anxiety, mood disorders, psycho-spiritual and relationship challenges. She believes open, empathetic understanding and taking a collaborative approach are the keys to a client-centered practice, and an important part of the healing and wellness of clients. In addition to Dr. Rea's clinical practice, she loves the ocean, enjoying photography, SCUBA diving, participating in beach clean-ups, and spending time with her family, dog and cat.

Julia Teytelbaum, MD, is a board-certified psychiatrist providing outpatient psychiatric care through telehealth. She earned her medical degree from the Florida State University College of Medicine and completed her psychiatry residency at UF Health Jacksonville, where she served as Chief Resident. She has experience working with adults facing mood disorders, anxiety, trauma-related concerns, ADHD, and perinatal mental health challenges.

Dr. Teytelbaum believes that feeling heard, understood, and respected is the foundation of effective mental health care. She takes a collaborative and supportive approach, helping patients set goals that feel realistic and meaningful. With a special interest in women’s mental health, including perinatal mood and anxiety disorders, she strives to create a calm, nonjudgmental space and approaches medication management thoughtfully, with close attention to patient preferences and well-being.

Dr. Teytelbaum begins with a comprehensive initial visit focused on understanding each patient’s history, concerns, and goals. She works collaboratively to develop an individualized treatment plan and checks in regularly about progress, side effects, and life changes. Her approach emphasizes continuity, clear communication, and steady support over time.

Dr. Tony Tu is a board certified adult psychiatrist who emphasizes patient education and a psychodynamic approach to outpatient psychiatry. His passion for empowering patients with knowledge stems from his academic experience in psychiatry residency training. Dr. Tu's practice focuses on blending medication management together with psychotherapy. He also prioritizes collaboration with your therapist and encourages working together as a team. Dr. Tu is a graduate of the University of Chicago Pritzker School of Medicine where he completed an MD and PhD combined program which helped develop his "doctors as teachers” style of practice. Dr. Tu completed his psychiatry residency training at Loyola University Medical Center in Illinois. Dr. Tu served as an Associate Program Director of Loyola's Psychiatry residency training program for two years, and now maintains an Affiliate Assistant Professor of Psychiatry role with Loyola. He continues to contribute to residency training, as well as mentorship of medical students and psychology externs. Over the years, Dr. Tu has received several awards that demonstrate his affinity for teaching, including the Educator of the Year Award in 2022 from the Loyola Psychiatry Residency Program. Areas of specialization include psychopharmacology, patient-centered medicine, and combination treatment of psychiatry and psychotherapy. Dr. Tu understands that medications are not the end-all-be-all of treatment, but just the beginning. For trauma and acute stress, he understands that the journey starts at the tip of the iceberg, with much to explore as you feel more ready.

Background  and credentials    

Dr. Columban Heo is a board-certified psychiatrist. He earned his medical  degree from Touro University Nevada and completed his residency at Unity  Health White County Medical Center. Dr. Heo further specialized by completing  a fellowship in Consultation-Liaison Psychiatry at the Cleveland Clinic,  where he gained extensive experience working within multidisciplinary  healthcare teams, particularly focused on psychiatric care for patients with  complex medical conditions.    

‍

Treatment approach  

Dr. Heo specializes in treating a broad range of psychiatric conditions,  notably mood and anxiety disorders. He integrates medication management with  a holistic, personalized approach to treatment, emphasizing the  interconnectedness of mind, body, and spirit. Dr. Heo believes in tailoring  treatment plans individually, combining therapy and medications to suit each  patient’s unique needs, and highlights the importance of healthy  relationships in achieving overall mental health.    

‍

What you can expect in a first visit    

Patients visiting Dr. Heo for the first time can expect a comprehensive and  personalized assessment that explores not just their psychiatric symptoms but  their overall well-being and personal relationships. Dr. Heo prioritizes a  holistic evaluation, carefully balancing medication considerations and  therapeutic interventions tailored specifically to each patient’s situation  and goals. He creates an empathetic, collaborative atmosphere to discuss and  develop personalized plans for mental and emotional wellness.  

‍

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 specialize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

Renee is a licensed therapist in the states of Texas and Florida. She earned a Master’s degree in Counseling from Sam Houston State University. Renee brings 15 years of experience in the mental health field supporting adults, adolescents, and children across a diverse range of therapeutic needs in the private practice and school setting.

Renee is dedicated to helping clients navigate life's complexities with confidence and resilience. Renee provides a safe, empathetic space where clients can explore their challenges and discover their inner strength.

Drawing from evidence-based practices, such as Cognitive Behavioral Therapy, Renee partners with clients to develop practical coping strategies, foster self-awareness, and build emotional resilience. Whether you're facing anxiety, depression, trauma, ADHD, or life transitions, Renee is here to support your journey toward wellness. She believes in building on your existing strengths while developing new tools to help you thrive, not just survive.

‍