Karelis Sierra-Cintron, 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. Tetyana Tarnavsky is a board-certified psychiatrist trained in Adult Psychiatry. She attended Dnipropetrovsk State Medical Academy in Ukraine where she received her M.D., M.S. and Ph.D. degrees in Psychiatry. Dr. Tarnavsky completed her residency at Harvard South Shore Psychiatry Residency Training Program in MA, where she was elected chief resident. Dr. Tarnavsky has an extensive research experience in Ukraine and the USA. She had studied computer addiction for her dissertation; had multiple abstracts and presentations; published several articles in peer-reviewed psychiatric journals as well as a book entitled Computer Addiction: Formation, Diagnosis, Correction and Prophylaxis. She has helped organize international conferences with the goal of improving access to and quality of healthcare in Dnipropetrovsk, Ukraine, and providing a national model for health care reform. Dr. Tarnavsky has worked with a variety of patients with diverse backgrounds in a Community Health Center and in the Partial Hospitalization Program as well as supervised medical students, psychiatry residents, and nurse practitioners. She has been a lecturer on psychiatry at Harvard Medical School and was involved in the training of psychiatry residents in the Harvard South Shore Psychiatry Training Program. Her primary focus has been on treating adults with depression, anxiety, post traumatic stress disorder, adjustment disorder, ADHD and other disorders. Dr. Tarnavsky strives to provide quality and compassionate treatment to individuals and their families.‍

Gabrielle Delarose is a dually boarded Psychiatric Mental Health and Family nurse practitioner with over ten years of clinical experience. Gabrielle is dedicated to providing culturally competent and evidence-based medication management and psychotherapy to assist individuals in achieving their goals to live their best life. I believe in holistic treatment of individuals, and focus on the individual’s overall well-being, including how they are functioning socially and professionally. In addition to medication and psychotherapy, she is a proponent of incorporating research-supported alternative modalities, including dietary changes, exercise, social interaction, and yoga. She also advocates of forest bathing (“shinrin-yoku”), a practice of spending time in nature that yields both medical and mental health benefits as discovered in research trials from around the world. As a professionally trained cellist, she also frequently incorporates art and music into appointments and treatment plans with patients. Her goal for all her patients is to improve all facets of a person’s life with treatment. Gabrielle is an LGBTQ+ affirming provider and has extensive experience working with diverse populations.

New patients should know that the initial appointment will consist of obtaining their social history in addition to their medical history. This is an important part of establishing a therapeutic relationship in addition to obtaining health information to use in formulating treatment plans. A person’s identity and life experiences are a significant influence on a person’s health and well-being, and Gabrielle believes in discussing these experiences in order to best understand a patient’s background and incorporate that into their care. Patients are encouraged to write down any questions they may have prior to the appointment, as well as any significant points they want to discuss. This is encouraged because, as patients, we may forget to address these points without a prompt from the provider. Gabrielle also encourages patients to actively participate in their care and firmly believes in a patient’s right to autonomy and agency. This patient-centered approach empowers patients to help guide treatment plans that best fit the patient’s needs and abilities at any given time. Patients are also encouraged to discuss any concerns about medications or treatment, particularly if there are concerns about side effects.

Gabrielle works collaboratively with patients to determine appropriate and preferred treatment plans, including medication and therapy. She uses cognitive behavioral therapy (CBT) as the primary therapy modality, in conjunction with existential therapy, depending on the patient’s needs and preferences. She prefers to allow patients flexibility in their treatment, so the process may look less structured depending on the immediate needs of the patient. Other times, particularly while working through a specific problem in therapy, appointment agendas may be planned out for several weeks. If at any time, however, a need arises to deviate from preplanned appointment agenda, patients are encouraged to discuss this at the beginning of the appointment. Above all, patients’ needs will guide the agenda.

For the past 20 years, Dr. Lavin has worked at the University of Denver Health and Counseling Center, where she has treated undergraduate and graduate students. She also worked at a training clinic for students pursuing their PsyD degree. She has supervised and taught psychiatry residents. She taught a psychopharmacology and differential diagnosis course to psychology trainees. Dr. Lavin has a strong interest in functional medicine and alternative therapies. Dr. Lavin has been in practice for 35 years. She is board certified in adult psychiatry. Dr. Lavin focuses on a comprehensive medical assessment, medication management, psychoeducation, wellness, and alternative therapies. She enjoys treating young adults. Dr. Lavin did her undergraduate work at the University of Rochester. She earned her MD from Cornell University Medical College in New York City. Her psychiatry residency was at the University of Boston Medical Center. After training, Dr. Lavin held administrative and clinical positions at Kaiser Permanente in Denver, CO and at the Harvard Community Health Plan in Braintree, Massachusetts. She has written clinical triaging guidelines and patient information pamphlets.‍

Background  and credentials    

Dr. Columban Heo is a board-certified psychiatrist. He earned his medical  degree from Touro University Nevada and completed his residency at Unity  Health White County Medical Center. Dr. Heo further specialized by completing  a fellowship in Consultation-Liaison Psychiatry at the Cleveland Clinic,  where he gained extensive experience working within multidisciplinary  healthcare teams, particularly focused on psychiatric care for patients with  complex medical conditions.    

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Treatment approach  

Dr. Heo specializes in treating a broad range of psychiatric conditions,  notably mood and anxiety disorders. He integrates medication management with  a holistic, personalized approach to treatment, emphasizing the  interconnectedness of mind, body, and spirit. Dr. Heo believes in tailoring  treatment plans individually, combining therapy and medications to suit each  patient’s unique needs, and highlights the importance of healthy  relationships in achieving overall mental health.    

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What you can expect in a first visit    

Patients visiting Dr. Heo for the first time can expect a comprehensive and  personalized assessment that explores not just their psychiatric symptoms but  their overall well-being and personal relationships. Dr. Heo prioritizes a  holistic evaluation, carefully balancing medication considerations and  therapeutic interventions tailored specifically to each patient’s situation  and goals. He creates an empathetic, collaborative atmosphere to discuss and  develop personalized plans for mental and emotional wellness.  

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Why Talkiatry?    

We’re a virtual mental health practice that makes it easy to find great  care. We combine quality and convenience to help you thrive—faster. Our  providers, like this one, are highly trained experts who specialize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

Dr. Alexandra Held is a general psychiatrist who holds a bachelor’s degree in psychology. She completed her psychiatry training at the University of Miami Miller School of Medicine. Her clinical interests include mood and anxiety disorders, PTSD, and OCD. She is passionate about incorporating psychotherapeutic tools into her practice, including supportive psychotherapy.

Dr. Held takes a warm, collaborative, and nonjudgmental approach to care. Her goal is to create a safe and supportive space where patients feel heard and empowered to take an active role in their treatment, using a combination of supportive psychotherapy and medication management.

During the first few sessions, Dr. Held will take time to get to know the patient—their history, current concerns, and what they hope to achieve through treatment. Together, they will develop a comprehensive plan that may include psychiatric medications and supportive therapy. Follow-up visits are typically focused on checking in, adjusting treatments if necessary, and continuing to build on progress.

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