Nereida Gonzalez-Berrios, MD

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. Saisha Jackson is a board-certified psychiatrist in Adult Psychiatry. She completed her undergraduate training at Hampton University followed by medical school at Michigan State University College of Human Medicine. She has completed a Residency in Psychiatry at Howard University.

She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, bipolar disorders, post-traumatic stress disorders and obsessive compulsive and related disorders. She specializes in psychopharmacology. Her practice focuses on medication management, and typically offers this in conjunction with supportive therapy in 30-minute follow-up visits.

Dr. Monica Badillo is double board-certified in child and adolescent psychiatry and adult psychiatry by the American Board of Psychiatry and Neurology. She received additional training and certification in Psychodynamic Psychotherapy at the New York Medical College Psychoanalytic Institute. Dr. Badillo is bilingual and speaks Spanish and English to deliver quality care for patients and parents. She provides medication management while incorporating psychoeducation, supportive, and psychodynamic psychotherapies. Generally, she employs 30-minute follow up sessions, and she may request a psychotherapist to participate in treatment. She listens and builds rapport with patients and families, while utilizing a trauma-informed, patient-centered, comprehensive, and collaborative approach. She completed her undergraduate degree at Fordham University in New York, and subsequently received her medical degree from Ross University School of Medicine in Dominica. She then completed general psychiatry residency and child and adolescent psychiatry fellowship at the Icahn School of Medicine at Mount Sinai, BronxCare Health System. She excelled in her program and was awarded honors as Chief Fellow in achievement and professionalism. After completing training, Dr. Badillo continued to work at the institution as an attending psychiatrist in the Child and Adult Outpatient Services, Pediatric Comprehensive Psychiatric Emergency Program (CPEP), and Pediatric Consultation Liaison services. She has held leadership roles, and instructed medical students, fellows, and resident physicians. Dr. Badillo has treated patients of all age ranges and diverse backgrounds in community mental health settings. Her primary focus is treating children, adolescents, and young-early adults for depression, anxiety, bipolar disorders, ADHD, trauma-related disorders, disruptive behavior disorders, and other psychiatric conditions.

Dr. Nelson is a board-certified psychiatrist who attended the University of Iowa Medical School and completed her psychiatry residency and child and adolescent psychiatry fellowship at Walter Reed National Military Medical Center.  She has extensive experience treating active-duty service members, family members of active duty and the veteran population.  She feels comfortable working with a wide range of age groups and enjoys treating challenges with anxiety, mood, sleep, and concentration.

Dr. Nelson believes that the key to success in mental health care is being able to establish a trusting and open relationship between psychiatrist and patient.

While initial sessions include the need to gather background information about the patient overall as well as the symptoms of concern, subsequent sessions are focused on learning the impact of the treatment.

‍

Dr. Erlach is a board certified adult psychiatrist who has previously worked for the United States Air Force and the Department of Veterans Affairs. He attended medical school at the Uniformed Services University of Health Sciences, graduating in 2009, followed by active duty military service in the United States Air Force until 2024. He completed residency training at the combined military-civilian Wright State University/Wright Patterson AFB training program in Dayton, Ohio.

Dr. Erlach enjoys working with all types of patients. He takes a collaborative approach to patient care and develops a treatment plan alongside the patient so that both are fully invested in the plan. He generally has weekend and evening appointments only.

Dr. Erlach incorporates therapy into medication management appointments. Dr. Erlach feels that addressing psychosocial stressors and developing coping mechanisms are a vital component to treatment.

‍

Dr. Mary Lou Gutierrez is board-certified in both Child & Adolescent Psychiatry and General Psychiatry, with over 20 years of clinical experience. She earned her M.D. from Loyola University Medical Center, where she also completed her residency in Adult Psychiatry. She pursued fellowship training in Child and Adolescent Psychiatry at Northwestern University’s Children’s Memorial Hospital. Her past roles include Medical Director for Compass Health Center’s Under 18 Program and Attending Psychiatrist at Loyola. She has been recognized as a “Top Doctor” in Child and Adolescent Psychiatry by US News and World Report and Negocios Now.

Dr. Gutierrez fosters a warm, collaborative environment where patients and families feel supported and understood. She emphasizes open communication and works closely with patients to define meaningful, realistic treatment goals. Her holistic, family-centered approach integrates medication management, therapy, and psychoeducation with a deep commitment to cultural sensitivity and compassionate care.

Dr. Gutierrez begins by learning each patient’s personal story, clinical history, and goals through a comprehensive evaluation. She creates individualized, evidence-based treatment plans tailored to each child’s unique needs and family context. She continuously collaborates with patients, families, and care teams to ensure treatment remains effective, combining psychotherapy, medication management, and coordination with other providers and resources.