Mark Varela,MD

Dr. Andrews is a board-certified psychiatrist who received his medical degree from Lake Erie College of Osteopathic Medicine and completed his psychiatric residency at the University of Texas Health – San Antonio. Since graduating from medical school, Dr. Andrews served in the United States Air Force for over a decade, first as a Flight Surgeon and later as the Medical Director for mental health and substance abuse clinics overseas. In these roles, he provided medical support to Air Force personnel, their family members, and veterans. These invaluable experiences in high-pressure environments strengthened his desire to support the psychological challenges of individuals in a myriad of situations.

Outside of patient care, Dr. Andrews remains active in continuing education, ensuring the latest scientific advancements inform his practice. With a background grounded in medical excellence, military service, and clinical psychiatry, he brings a steady, knowledgeable, and compassionate presence to the healing process.

Dr. Andrews offers comprehensive psychiatric care to adults seeking support for mental health challenges. Whether you are experiencing stress, depression, panic attacks, sleep issues, or difficulty focusing, he provides a warm, nonjudgmental space to explore your concerns and work collaboratively on a treatment plan that aligns with your goals and values. He offers both medication management and a combination of psychotherapy techniques tailored to each patient’s unique needs for effective and lasting outcomes.

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Dr. Pressley Warrick is a double board-certified psychiatrist specializing in general psychiatry and child and adolescent psychiatry. Dr. Warrick currently practices full-time, offering comprehensive psychiatric care to children, adolescents, and adults. She previously established and led a Behavioral Health Clinic integrated within a Family Medicine Practice. Prior to this role, Dr. Warrick provided dedicated psychiatric care at a private psychiatry practice for over a decade.

Dr. Warrick earned her medical degree from the Medical University of South Carolina, completed residency training at Baylor College of Medicine's Menninger Department of Psychiatry and Behavioral Sciences, and pursued additional specialization through a Child and Adolescent Psychiatry fellowship at Palmetto Health/USC School of Medicine.

Known for a collaborative and holistic treatment approach, Dr. Warrick emphasizes individualized care and evidence-based practices to support patients’ mental wellness. Her professional excellence has earned recognition as Sumter’s Best Psychiatrist for consecutive years.

Dr. Warrick’s preferred treatment modalities include medication management, psychodynamic psychotherapy, and supportive psychotherapy. She specializes in treating depression, anxiety, ADHD, autism, OCD, bipolar disorder, and PTSD. Her typical approach for new patients involves taking a detailed patient history, establishing rapport, and setting clear treatment goals in partnership with her patients.

Dr. Ye Kyung Song is a board-certified psychiatrist with both an M.D. and a Ph.D. in medical humanities and ethics from the University of Texas Medical Branch. She completed her residency at Duke University and has experience practicing in both outpatient and inpatient settings. In addition to her clinical training, Dr. Song has pursued advanced training in several therapeutic modalities, including the Collaborative Approach to Management of Suicidality (CAMS) and Radically Open Dialectical Behavioral Therapy (RO-DBT).

Dr. Song takes a collaborative, values-driven approach to treatment, emphasizing partnership in decision-making and tailoring care to each individual’s needs. She uses medication thoughtfully and only when appropriate, considering the whole picture of a patient’s health and life. Her goal is to help patients understand the underlying reasons for their symptoms by examining patterns, conflicts, and meaning. She is committed to creating a safe and supportive environment where patients can explore their experiences openly.

During the initial appointment, Dr. Song focuses on understanding a patient’s clinical history, current concerns, and personal goals. Together with the patient, she develops an individualized treatment plan that clearly outlines areas of focus and aligns with the patient’s values and objectives. Her process emphasizes getting to the root “why” behind symptoms, while using evidence-based medicine and therapy modalities best suited for the situation. Treatment plans and medications are adjusted collaboratively over time to ensure ongoing support and progress.

Dr. John Lundeen earned his medical degree from the Medical College of Georgia and completed his psychiatry residency at TriStar Centennial Medical Center. He has worked with adults of all ages in both outpatient and inpatient settings, bringing a wide range of experience to his practice.

Dr. Lundeen approaches every patient with respect, empathy, and a genuine desire to understand their unique experience. He recognizes that seeking treatment can be intimidating and strives to create a welcoming, non-judgmental environment where patients feel safe and heard.

Dr. Lundeen believes in a collaborative treatment process, prioritizing each patient’s goals, values, and input. He emphasizes mental health education as a core component of care, empowering patients to better understand their treatment options and take an active role in their well-being.

Thomas Sargent, MD, holds a master's degree in pharmacology and a Doctor of Medicine from Tulane University School of Medicine. He completed his psychiatry residency at the Icahn School of Medicine at Mount Sinai West/Morningside in New York City. Over the past four years, he has treated a wide range of mental health conditions in various clinical settings. Dr. Sargent has extensive experience treating mood, anxiety and psychotic disorders, PTSD, OCD, personality disorders, and substance use issues. He utilizes both medication management and psychotherapy to provide comprehensive care. Dr. Sargent has received specialized training at the VA and the Center for Intensive Treatment of Personality Disorders in NYC. Passionate about holistic treatment, Dr. Sargent considers the biological, psychological, and social factors that influence mental health. He believes in addressing core issues through targeted care rather than defaulting to prescribing multiple medications. Dr. Sargent strives to create a supportive environment where patients can openly express their concerns. He believes in shared decision-making to ensure that care is evidence-based but also tailored to each patient's unique needs. Dr. Sargent takes the time to thoroughly explain diagnoses and treatment options, empowering patients to make informed decisions about their mental health. His approach emphasizes patient autonomy and aims to build trust, leading to more effective and personalized care outcomes.

Dr. Iris Guerrero Urena is double board-certified in psychiatry and consultation-liaison psychiatry. She received her medical degree from Universidad Iberoamericana in the Dominican Republic and went on to complete psychiatric residency at Lincoln Hospital in New York City. Dr. Guerrero then completed a consultation liaison fellowship at Morningside and West Mount Sinai Hospital in New York, further acquiring proficiency in caring for patients with complex medical and psychiatric comorbidities. After completing training, Dr. Guerrero worked in an acute inpatient unit and as a psychiatric consultant for patients admitted to medical units in Oregon. Dr. Guerrero Urena focuses on medication management while also implementing elements of supportive, dialectical behavioral, and cognitive behavioral therapy within each session to fully address individual needs. At times, Dr. Guerrero Urena may recommend a therapist for additional therapy. Dr. Guerrero Urena is experienced in treating a wide range of psychiatric conditions including depression, bipolar disorder, anxiety, PTSD, OCD.