Caitlin Gardiner, MD

Gregory Miller, DO, is an adult psychiatrist who prioritizes understanding his patients by first listening to their stories. He collaborates with them to develop both pharmacological and non-pharmacological solutions aimed at improving their functionality. Dr. Miller emphasizes that functioning better often leads to feeling better. Whenever possible, he approaches treatment within the context of the family system surrounding the individual. Raised in South Carolina, and now residents of Florida, Dr. Miller and his wife of 31 years have six children. He enjoys outdoor activities and team sports and is an avid fan of Tolkien and C.S. Lewis. He at times incorporates analogies from their works into therapy if appropriate.

Background and credentials

Dr. Matthew Koller is a board-certified adult psychiatrist who completed his undergraduate training at The University of Texas at Austin. He earned his medical degree from The University of Texas Health Science Center at San Antonio and completed his general adult psychiatry residency at Baylor College of Medicine in Houston, TX, where he served as Chief Resident of Education in his final year of training.

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Treatment approach

Dr. Koller believes that understanding a patient fully is essential before treatment begins, emphasizing a collaborative and patient-centered approach to care. His practice is primarily focused on medication management, but he also incorporates supportive therapy and other therapeutic modalities as needed. He may recommend including a therapist in the treatment plan to ensure comprehensive, well-rounded care. He has experience treating a wide range of mental health conditions, including depression, anxiety, insomnia, personality disorders, bipolar disorder, PTSD, and psychotic disorders.

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What you can expect in a first visit

During the first visit, patients can expect a thorough and individualized psychiatric evaluation, where Dr. Koller takes the time to understand their symptoms, history, and treatment goals. He prioritizes open communication and shared decision-making, working closely with patients to develop personalized treatment plans. While medication management is the foundation of his approach, he remains flexible and adaptive, incorporating therapy and other interventions as needed to help patients achieve optimal mental health.

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

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Dr. Cheng is a board-certified psychiatrist who provides medication management alongside supportive therapy. She takes an individualized, patient-centered approach, creating comprehensive treatment plans tailored to each person's needs. With an approachable and caring demeanor, she helps patients address both immediate concerns and underlying stressors. Dr. Cheng believes in evidence-based practices while maintaining sensitivity to each patient's unique mental health journey.

Dr. Natarajan is a Psychiatrist at Talkiatry providing psychiatric services to adults ages 18 and older. In her practice, Dr. Natarajan focuses on medication management and psychoeducation, often along with supportive therapy. She is committed to providing evidence-based and patient-centered quality care for her patients. She is dedicated to working collaboratively with patients as a team in order to help patients to the best of her ability. Dr. Natarajan received her medical degree from Rutgers Robert Wood Johnson in NJ. She then completed her psychiatry residency at Rutgers Robert Wood Johnson as well, where she served as Chief Resident. Dr. Natarajan has a vast array of clinical interests in psychiatry and behavioral health, including anxiety and mood disorders as well as wellness. In her free time, she enjoys traveling to new places, and spending time with her family and friends.

Dr. Taylor Brady, MD, MBA, is a psychiatrist who found his passion for mental health care through the power of listening to people’s stories. His background includes medical training at the University of Utah, leadership as Student Body President, and psychiatric residency at the University of Texas, where he served as Inpatient Chief Resident and received awards for both clinical excellence and medical education. he brings that same commitment and curiosity to his work with patients. Outside of clinical care, he is deeply interested in narrative medicine—the way our personal stories shape our mental health—and uses that lens to help patients find meaning, clarity, and strength in their own journeys.

As a psychiatrist, Dr. Taylor Brady approach is rooted in compassion, collaboration, and respect for your unique story. He views mental health treatment as a partnership—one where psychotherapy and medication can work together to support your growth and healing. His goal is to help you uncover the patterns and behaviors that may be holding you back, and empower you to make meaningful, sustainable change. He encourages patients to take ownership of their mental health, and he is here to provide the tools, guidance, and support you need along the way.

We’ll begin by taking the time to understand your story, your goals, and what brings you to treatment. The first few sessions focus on building trust and identifying the areas where you’d like to see change. From there, we’ll collaboratively develop a treatment plan that may include psychotherapy, medication, or both—always tailored to your needs. He draws from multiple therapeutic approaches, including Cognitive Behavioral Therapy (CBT), Cognitive Processing Therapy (CPT), and Psychodynamic Psychotherapy, to provide care that fits you, not the other way around. Throughout our work, he'll support you in developing insight, resilience, and confidence in managing your mental health.

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Dr. Maria is a Board-Certified Adult Psychiatrist with specialized training in Child and Adolescent Psychiatry. She earned her medical degree from Andes University in Colombia, completed her Psychiatry Residency at The Wright Center in Scranton, Pennsylvania, and pursued further training through a Child and Adolescent Psychiatry fellowship at Louisiana State University in New Orleans.

Dr. Maria is deeply committed to providing kind, thoughtful, and inclusive care. She creates a warm, welcoming space where patients of all ages feel safe, listened to, and truly seen. Her approach blends evidence-based practices with compassion and patient collaboration. She works closely with each patient to understand their unique story and help them move toward meaningful, personal goals.

She takes time to build strong, trusting relationships and conducts thorough evaluations to understand each person’s experiences and needs. Her treatment often includes psycho-education, supportive therapy, and medication management—always shaped by what matters most to the patient.

Dr. Maria has experience treating a wide range of mental health conditions, including ADHD, PTSD, Depression, Anxiety, OCD, and Bipolar Disorder. She is especially passionate about supporting minority and marginalized communities, and she strives to ensure everyone feels valued and cared for.

Dr. Maria practices with a patient centered approach, focusing on each patients unique needs. She practices evidence based medicine with empathy, warmth and in a supportive, nonjudgmental environment.

It is important to Dr. Maria to build trust with patients, so they feel comfortable during their visits. She provides a thorough evaluation to understand symptoms, challenges and personal goals. Dr. Maria conducts visits that incorporate both medication management and psycho-education through supportive therapy. She works with her patients to set clear goals that align with their preferences.

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