Christine Reyes, MD

Dr. Upton Thomas is a board-certified psychiatrist who takes a warm, collaborative, and evidence-based approach to care. With a focus on treating mood disorders, anxiety, OCD, and substance use, he integrates psychopharmacology and psychotherapy to support patients in achieving meaningful change. He brings curiosity, creativity, and a deep respect for each individual’s story to his clinical work.

Patients often find Dr. Thomas easy to talk to and appreciate his calm, thoughtful demeanor. He emphasizes shared decision-making and believes that treatment works best when the patient’s values and voice are at the center. Dr. Thomas aims to create a safe space for honest dialogue and ongoing reflection as treatment evolves.

Dr. Thomas begins with a comprehensive evaluation to understand each patient’s mental health history, current concerns, and goals. He then develops an individualized treatment plan that may include medication, therapy, or both. He prefers to use the lowest effective dose of medications and often integrates psychotherapeutic strategies such as CBT, DBT, or insight-oriented work into his sessions.

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Dr. Troy Grantham is a board-certified staff psychiatrist who treats adult patients. A former engineer, Dr. Grantham has developed a passion for guiding patients along the road to recovery. He completed his undergraduate studies at The University of Texas at Austin and later completed medical school and residency in General Psychiatry at The University of Texas Medical Branch at Galveston. Dr. Grantham's practice focuses on medication management. He utilizes a systematic approach to ensure diagnoses are accurate and treatment plans are optimized to each individual patient. His approach is also holistic in nature, often incorporating therapy and lifestyle modification into the treatment plan. Dr. Grantham employs multiple therapeutic approaches in his practice depending on the needs of the patient including supportive therapy, Cognitive Behavioral Therapy (CBT), and Acceptance and Commitment Therapy (ACT). He places great emphasis on psychoeducation so that patients are aware of the nature and prognosis of their conditions as well as the treatment options available. When multiple treatment options are reasonable, Dr. Grantham takes patient preference into account, offering flexibility to the patient experience. He treats a variety of psychiatric disorders with a particular focus on mood disorders, anxiety disorders, obsessive-compulsive disorders, and trauma-related disorders.

Please note: Dr. Grantham does not prescribe long-term, daily benzodiazepine medications, however he is happy to help you taper off of these medications and transition to a safer, long-term medication regimen.

Dr. Alicia Garcete is a board-certified child, adolescent, and adult psychiatrist in practice for over 12 years. Her practice focuses on medication management, recognizing  family involvement is extremely important and is an integral part of treatment. Dr Garcete has treated a wide variety of patients. Her primary focus is treating depression, anxiety disorders, ADHD, PTSD and OCD. Additionally, she can provide supportive therapy and elements of cognitive-behavioral therapy but on occasions more therapy support may be needed, and the recommendation to bring a psychotherapist on the care team may occur to provide an optimal outcome. Dr. Garcete is bilingual and provides care in both Spanish and English.

Prior to Talkiatry, Dr Garcete treated children, adolescents, and adults was at the intensive outpatient and partial hospitalization levels of care with focus on behavioral approaches in the Depression recovery and Anxiety/OCD programs.

Dr. Garcete earned her Medical Degree from the Universidad Nacional de Asuncion, Facultad de Ciencias Medicas in Paraguay. She completed her general psychiatrist residency at Maimonides Medical Center in New York. She was also a Fellow in Psychoanalysis at the Psychoanalytic Institute, Affiliate to New York University School of Medicine, and completed her child and adolescent psychiatrist fellowship at Elmhurst Hospital Center, affiliate to Mount Sinai Hospital. Dr. Garcete also held a clinical assistant professor appointment from the department of psychiatry at SUNY Downstate Medical Center.

Dr. Mullenix is a board-certified adult psychiatrist who strives to form strong therapeutic and collaborative environments with patients and values patient empowerment. Dr. Mullenix received his medical degree from the Chicago Medical School and then went on to complete his residency in psychiatry at Advocate Lutheran General Hospital. His interests and expertise are in helping patients struggling with depression, anxiety, including social/obsessive compulsive and generalized anxiety disorders, and ADHD. He provides psychiatric medication management along with supportive, cognitive behavioral therapy (CBT) and other modalities of therapeutic treatment. Dr. Mullenix's practice focuses primarily on medication management, or pharmacotherapy. He routinely incorporates supportive therapy into his 30-minute follow-up visits. Dr. Mullenix may occasionally recommend that a therapist be part of the care team to provide optimal outcomes. The philosophy of his practice is to actively involve patients in the decision-making process to improve adherence to treatment and build trusting relationships with all patients.

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.    

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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.    

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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.  

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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.

Dr. Goel holds the position of Staff Psychiatrist at Talkiatry. She has completed adult psychiatry training and is board eligible. She has been actively involved in mental health care in various capacities over the past 7 years. Dr. Goel's practice focuses on psychopharmacological interventions. Typically, she combines this with a strong emphasis on Cognitive Behavior Therapy (CBT). Dr. Goel also strongly believes that the best outcomes are achieved when you treat a person and not just illness. She received her medical degree from one of the largest publicly funded medical schools in India, L.L.R.M. Medical College, Meerut, India, before moving to the US. She gained experience in mental and behavioral health in various roles at some of the most prestigious institutions in the US, namely Northwestern University, Emory University, and North Shore-LIJ. She completed her residency at Nassau University Medical Center, East Meadow, NY. Dr. Goel has been a co-author of several research papers. Her team's research work has also been presented at national and international meetings as well. While Dr. Goel enjoys working with adults with various psychiatric disorders, her primary focus is on treating adults with various anxiety and depressive disorders. Dr. Goel also has a special interest in co-occurring sleep disorders related to these conditions.