Matthew Koller, MD

Dr. Scot McKay is board certified in Psychiatry and Child/Adolescent Psychiatry. He graduated medical school from the Medical University of South Carolina in Charleston, SC. He completed his residency and child/adolescent fellowship trainings at the University of Colorado - Anschutz Medical Center in Denver, CO. Previously, he has worked on the inpatient and partial hospitalization child/adolescent psychiatric units at Children's Hospital Colorado as well as in the school-based health clinics through Denver Health in partnership with Denver Public Schools. He has also worked in community mental health at the Mental Health Cooperative clinics throughout the Middle Tennessee region. He most recently joined a private practice before joining Talkiatry. He has been named to the Nashville Lifestyles Magazine's Top Doctors list in 2022, 2023, and 2024. He is a fellow of the American Psychiatric Association, and a member of the American Academy of Child and Adolescent Psychiatry. Dr. McKay enjoys working with patients going through life transitions such as high school to college and college to adult life. He believes it is important to understand the whole person (mind, body, and spirit) when treating them. He treats people struggling with depression, anxiety, bipolar, and ADHD, as well as trouble with relationships and family conflict. Dr. McKay provides both medication management and therapy. He believes that medication is just one of the items in a psychiatrist's toolbox and that therapy is equally important as medication.

Dr. Austin Davidson grew up in Nashville, TN before moving to CA for his undergraduate studies at the University of California, Irvine where he was on the rowing team. He then attended medical school at the Alabama College of Osteopathic Medicine. He completed his psychiatry residency training at the University of Nevada, Las Vegas.

When he’s not practicing medicine, he enjoys spending time with his family, working out in his garage gym, and playing board games.

Dr. Davidson focuses on treating the whole patient. He believes medication is just one of the many important aspect to address when concerning mental health. Therapy, lifestyle changes, diet, and exercise are also equally important modalities that must be considered in treatment.  

Dr. Davidson’s treatment process typically begins with an in-depth history that focuses on getting to know his patients. He prefers to take his time with each patient and to make sure they feel they are heard. He believes the treatment process is a team effort and he takes time to come up with treatment plans that both he and his patients are comfortable with.

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Dr. Alfers is a board-certified psychiatrist specializing in adult psychiatry. He has been practicing for over 11 years. He completed his undergraduate education at Virginia Tech, graduating Cum Laude with degrees in Biology and Chemistry. Following graduation, he attended a research internship at the National Institutes of Health where he received a Post-baccalaureate Intramural Research Training Award. Dr. Alfers completed his medical degree from the Western University of Health Sciences in Pomona, CA. He completed his General Psychiatry Residency at Georgetown University, where he served as Chief Resident. After residency, he entered private practice in McLean, VA. Dr. Alfers takes a comprehensive approach to patient care. He integrates biological, psychological, and environmental factors into treatment planning. He focuses on developing a meaningful therapeutic relationship and providing medication interventions for specific treatment goals. Dr. Alfers provides interpersonal psychotherapy in conjunction with medication management services. Dr. Alfers has a special interest in the treatment of multiple mental health conditions, including depression, anxiety, bipolar disorder, PTSD, ADHD, and OCD. Dr. Alfers treats adults ages 18 to 65 years old. For established patients of Dr. Alfers, please call 917-634-5311 to schedule an appointment and let the care coordinator know you are an established patient.

Dr. Alexandre Cupler is a board-certified psychiatrist who began his career in community mental health in 2014, working as a counselor in psychiatric rehabilitation facilities. Since then, he has gained experience across inpatient hospitals, outpatient clinics, and residential treatment settings. Dr. Cupler earned his medical degree from Rush Medical College and completed his psychiatry residency at Chicago Medical School.

Dr. Cupler takes a patient-centered approach to care, making it a priority to ensure that each patient’s concerns are genuinely heard. He strives to create a culturally sensitive, non-judgmental, and safe environment where patients feel comfortable discussing difficult topics and working collaboratively toward their goals.

Initial sessions with Dr. Cupler focus on understanding the patient’s primary concerns, history, and treatment goals. He tailors care to each individual's preferred treatment style and ensures patients are informed about their treatment plan so they know what to expect and can take an active role in their care.

Dr. Melody Santos is dual-trained in Internal Medicine and Psychiatry, with experience in both outpatient and inpatient settings. She served as Chief Resident and Deputy Chief Resident in East Carolina University’s combined residency program, where she led academic and clinical initiatives. Dr. Santos has published research on topics including adult ADHD and metabolic psychiatry, with presentations at national conferences. She earned her MD from the American University of the Caribbean and a BS in Biology with a minor in Jazz Piano from the University of Tampa. A native Spanish speaker, she is active in community service and church-based outreach.

Dr. Santos values open and clear communication, creating a safe, non-judgmental space where patients feel heard and respected. She blends traditional and innovative approaches, including metabolic psychiatry and dietary strategies, to support wellness. Her care is culturally sensitive and patient-centered, always tailored to each individual’s needs and values. Through empathy and education, she empowers patients and fosters resilience.

Dr. Santos begins with a thorough assessment of each patient’s medical, psychiatric, and lifestyle history. She collaborates with patients to build personalized, evidence-based treatment plans that reflect their goals and preferences. Her holistic care model considers social, cultural, and environmental influences, and she ensures consistent follow-up to adjust care as needed, promoting informed, long-term wellness.

Dr. Sumeet Singh is board-certified by the American Board of Psychiatry and Neurology in General Adult Psychiatry. He completed his psychiatry residency training at Howard University Hospital and Saint Elizabeth's Hospital in Washington, DC., where he was voted as Chief resident. He went on to serve as vice chair of the Department of Psychiatry at Adventist HealthCare in Maryland, where he worked in both an administrative and clinical role treating adults in inpatient settings. Additionally, he served as a Clinical Instructor of Psychiatry at Georgetown University School of Medicine, teaching medical students about the art of medicine. Dr. Singh received his undergraduate degree in Neuroscience from the University of Michigan and received his medical degree from Xavier University School of Medicine. Most recently, Dr. Singh worked for Life Stance Health, an outpatient telehealth company, where he treated patients between the ages of 18-65 years old with both medication management and therapeutic interventions. Dr. Singh has years of experience treating the following disorders/diagnoses: depression, anxiety and panic attacks, bipolar disorder, PTSD, ADHD, and OCD.‍