Absar Tahir, MD

Dr. Saria El Haddad is double boarded in general psychiatry and addiction psychiatry. She previously held a leadership role of medical director for the dual diagnosis partial hospitalization program at the Brigham and Women's Faulkner hospital where she helped create and establish this program, and also worked as an outpatient addiction psychiatrist. She has been involved in teaching and has maintained an academic affiliation with the Harvard Medical School. In addition, she has appeared in numerous professional publications and authored several research papers.  

Dr. El Haddad received her medical degree from the American University of Beirut, Lebanon and completed her psychiatry residency program at the University of Virginia. She completed a fellowship in addiction psychiatry through Boston University after which she started working at the Brigham and Women's hospital. Dr. El Haddad's approach to treatment focuses on adopting a holistic approach through behavioral change, medication management, and brief psychotherapy.

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.

Dr. Maria Teresa Carvajal is an adult, child, and adolescent psychiatrist. She is originally from Guayaquil, Ecuador, and is bilingual in Spanish and English. Dr. Carvajal earned her medical degree from Universidad de Guayaquil in Ecuador. She then participated in a medical program at The William J. Harrington Training Program for Latin America and the Caribbean, at Jackson Memorial Hospital, an affiliate of the University of Miami in Florida. Afterwards, she completed her adult psychiatry residency at Icahn School of Medicine at Mount Sinai, Bronx Care Health System, and her fellowship in child and adolescent psychiatry at Northwell Health in New York. She has experience working in various settings, including inpatient, outpatient, and emergency departments. Dr. Carvajal has submitted and presented work to the American Psychiatric Association and has also collaborated on a book publication. Dr. Carvajal has experience treating children and adults with anxiety, depression, OCD, PTSD, ADHD, dementia, etc. She utilizes medication management in conjunction with emotional and supportive therapy in 30-minute follow-up visits. She is passionate about her work and understands the impact of mental illnesses in daily life activities and in the family system. She will work with each patient in an individualized manner and will tailor personalized treatment plans that may include pharmacological treatment. In addition, Dr. Carvajal may recommend including a therapist in your care team to provide the best outcome.‍

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.

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Darcie Farrell is an ANCC Board Certified Family Psychiatric Nurse Practitioner.  She has worked exclusively in the field of psychiatry during her forty-year nursing career.  She has worked in many care settings, including as a psychiatric Home Health Nurse and as a Certified Case Manager (CCM) in Psychiatry at Blue Cross Blue Shield. During her time at Excellus Blue Cross Blue Shield, she realized the urgent need for psychiatric nurse practitioners, so enrolled in the BSN/MSN program at the University of Rochester, graduating in 2016 with her BSN and in 2018 with her MSN.  She has strong skills and experience in Motivational Interviewing, having worked as a Motivational Counselor for a University of Rochester's Pediatric Research Program.   She has worked for the past seven years as a Nurse Practitioner in Geriatric Outpatient Psychiatry.

Darcie Farrell is a compassionate provider who is client centered. I rely on evidence-based scientific research when determining the best treatment options for clients.  

Darcie Farrell has a very relaxed process for working with patients which allows the client to provide information that is pertinent to their goals for care.  Then, together, we determine which treatment options are likely to be best for the client.

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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.