Michael Underriner, MD

Edmund Clark, MD, serves as Chief Psychiatrist at Talkiatry with over 17 years of board-certified experience, including more than 5 years delivering tele-psychiatric care to underserved areas. His career spans 23 years in public service, including leadership roles as Chief of the VA Mental Health Clinics in Jacksonville, FL, and program manager for the University of Florida’s Psychiatry Residency Training Program. A former U.S. Navy psychiatrist, he deployed multiple times, including to Iraq in support of an Army Combat Stress Control clinic, gaining expertise in evidence-based PTSD treatments. Dr. Clark earned his medical degree from the University of Florida and completed his psychiatry residency at the National Naval Medical Center and Walter Reed, serving as chief resident for over 50 military trainees. Before medicine, he served in the U.S. Peace Corps in Kenya.

Dr. Clark values a collaborative approach built on honesty, rapport, and ensuring patients feel heard. He helps patients identify and address multiple factors influencing their mental health, aiming for positive, lasting changes that improve function across life domains. He encourages evidence-based therapies and, when needed, involves other providers to support comprehensive care.

Dr. Clark uses measurement-based tools to assess medication efficacy and guide treatment decisions. He integrates supportive psychotherapy to strengthen coping skills and reduce negative thinking, while incorporating motivational interviewing techniques to promote recovery and self-improvement.

Dr. Mary Stephenson is a board-certified Child and Adolescent Psychiatrist with more than 25 years of clinical experience working with this population. Dr. Stephenson's practice focuses on medication management. She believes that the support and involvement of the family are an integral part of the treatment of the client. Additionally, more therapy support may be needed on occasion, and the recommendation to bring a psychotherapist on the care team may occur to provide an optimal outcome. She received her medical degree from Wright State University in Dayton, Ohio. She completed her psychiatry residency at the University of Louisville School of Medicine, and her child and adolescent training at the Bingham Child Guidance Center, also part of the University of Louisville, in Louisville, Kentucky. After completion of her training, she moved to Colorado where she worked at The Cleo Wallace Center, in Westminster, CO, providing care for hospitalized youth, and clients in the Day Treatment and Residential setting. In 2000, Dr. Stephenson became the primary Child and Adolescent Psychiatrist on the outpatient team at Denver Health Medical Center in Denver, Colorado. Her role was providing diagnostic evaluations, and medication management in Federally Qualified Health Centers (FQHCs), and the hospital clinic, working closely with residents, child fellows, and other trainees. She had an academic appointment through the University of Colorado School of Medicine. She treated a varied demographic and had a wide range of diagnoses in the child and adolescent population. From 2016-2021, she worked at Intermountain Health Center in Tucson, AZ providing care in the outpatient setting of the community mental health center. The care was a hybrid model of "in-person” and Telehealth treatment of children and adolescents with various disorders, with an emphasis on diagnostic evaluations of Autism and Autism spectrum disorders.‍

Dr. Hess is double board-certified in Adult and Geriatric Psychiatry. He completed his psychiatry internship and residency training at St. Vincent's Hospital and Medical Center in New York City, and then completed a geriatric psychiatry fellowship at Mount Sinai Beth Israel Medical Center. Dr. Hess has practiced inpatient psychiatry at the Long Island College Hospital, NYU Langone Brooklyn, and Kingsbrook Jewish Medical Center. He has also worked in emergency rooms, day hospitals, and consultation-liaison settings, as well as seeing geriatric outpatients at a naturally-occurring retirement community (NORC) on the Lower East Side of Manhattan. Dr. Hess has taught St. George's University medical students during their clinical rotations in psychiatry. Dr. Hess has more than 24 years of experience providing patients with compassionate psychiatric care for depressive and bipolar disorders, anxiety, obsessive-compulsive disorder, post-traumatic stress disorder, and dementia. He uses pharmacotherapy as well as supportive psychotherapy. Dr. Hess may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. The philosophy of his practice is to collaborate with patients to meet their specific needs and make an impact in various stages of their lives.

Dr. Kathryn Bertacchi is board-certified in both adult and child & adolescent psychiatry. Originally from California, she earned her medical degree from University College Cork in Ireland and completed residency and fellowship at Emory University. She has practiced in varied settings, including developing specialized clinics in eating disorders and gender-affirming care. She is a member of several professional organizations including AACAP, APA, and WPATH.

Dr. Bertacchi fosters an inclusive, nonjudgmental environment where patients feel safe to be themselves. She approaches care with curiosity, compassion, and deep respect for each person’s unique story, aiming to help individuals feel genuinely heard and supported throughout their treatment journey.

In early sessions, Dr. Bertacchi works collaboratively to understand patients' lives, goals, and challenges. While her focus is medication management, she integrates cognitive-behavioral, humanistic, and supportive techniques. She may recommend additional therapy as needed and particularly values working with youth and adults from diverse backgrounds.

Dr. Maxine Minto is a double board-certified psychiatrist. She is board certified in General Adult Psychiatry and Child and Adolescent Psychiatry. She is a Distinguished Fellow of the American Psychiatric Association (APA). Dr. Minto is an associate professor of psychiatry at the University of Central Florida College of Medicine. She is an active member of both the APA and American Academy of Child and Adolescent Psychiatry. Dr. Minto received her medical degree from the University of Miami Miller School of Medicine. She completed her general psychiatry residency and child-adolescent fellowship at the University of Miami/Jackson Memorial Hospital. She has more than 25+ years of experience working in the psychiatric profession. She has previously worked extensively in the role of medical director in multiple settings. Dr. Minto was honored with the role of medical director of a large community mental health center, child psychiatry inpatient program, adult and child inpatient residential treatment program, and outpatient residential day treatment program. She also has 8 years of experience working with the Deaf community. Dr. Minto specializes in psychopharmacology and supportive therapy. She performs comprehensive psychiatric evaluations, develops patient-centered individualized treatment plans, and schedules regular follow-up appointments. She has a wealth of experience in treating patients with depression, bipolar disorder, ADHD, and anxiety disorders.

Dr. Rachel Sherhart is a board-certified adult psychiatrist who has been in practice for over 4 years. She specializes in medication management with 30-minute follow-up visits. This may be accompanied by elements of supportive therapy, Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), and psychodynamic therapy. If more in-depth work is needed, she may refer patients to a collaborating psychotherapist. ‍Dr. Sherhart received her medical degree from Texas A&M Health Science Center and completed her psychiatry residency training at the University of Texas Southwestern in Dallas, Texas. She has served as faculty at Texas A&M University College of Medicine, providing education and supervision for psychiatry residents and medical students. ‍She has experience treating adult patients from many walks of life with a broad range of diagnoses, including depression, anxiety, bipolar disorder, ADHD, and trauma-related disorders. Dr. Sherhart has a passion for providing excellent patient care and education. Her goal is for patients to feel heard and find a safe place to discuss their concerns. She is motivated to work collaboratively with patients to find a solution that best fits their treatment goals and improves their overall quality of life.‍