Cheryl Person, MD

Background and credentials

Dr. John Whittier is a board-certified psychiatrist. He earned his Bachelor of Arts in Molecular, Cellular, and Developmental Biology from the University of Colorado at Boulder and went on to obtain a master’s degree in Medical Science from Loyola University Chicago. He completed his medical training at the Robert Larner, M.D. College of Medicine at The University of Vermont and returned to Colorado for his psychiatry residency at the University of Colorado School of Medicine. While in residency, he specialized in the Psychotherapy Scholars Program and has since gained four years of experience treating psychiatric conditions through telehealth.

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Treatment approach

Dr. Whittier primarily focuses on medication management for general psychiatric conditions. His approach is individualized, ensuring that each patient receives a treatment plan tailored to their unique needs. He integrates supportive therapy, medications, and evidence-based alternative therapies to provide a flexible and comprehensive approach. In addition to his general practice, he maintains a psychodynamic psychotherapy panel where he helps patients explore developmental and relational patterns that contribute to their symptoms. His specialties include treating depression, anxiety, adjustment disorders, PTSD, insomnia, bipolar disorder, and ADHD.

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What you can expect in a first visit

During the first visit, patients can expect a one-hour comprehensive intake during which Dr. Whittier thoroughly evaluates their symptoms, medical history, and personal goals. He provides treatment options that prioritize flexibility, allowing patients to take an active role in their care. Follow-up visits typically last 20 to 30 minutes, focusing on assessing treatment progress and making necessary adjustments. For those engaged in psychodynamic psychotherapy, longer one-hour sessions are available for in-depth exploration of underlying psychological patterns.

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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.

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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. Ellis is a graduate of Robert Wood Johnson Medical School in Piscataway, NJ. He completed his psychiatric residency at Cooper Hospital/University Medical Center in Camden, NJ, where he served as Chief Resident his senior year. Dr. Ellis has served as Assistant Medical Director of the community mental health center of Gloucester County for 28 years, providing care to a diverse population. Additionally, Dr. Ellis maintained a private practice for 15 years, treating individuals and their families with ongoing collaboration with therapists and other health care providers

Dr.Gusta Shurdut is a board-certified adult psychiatrist with 8 year experience. She completed her medical training at SUNY Downstate Medical center in Brooklyn, and psychiatric residency at Mount Sinai Beth Israel, NYC. After her residency, she worked as an assistant professor at Mount Sinai Psychiatric Ambulatory Services. Dr.Shurdut graduated magna cum laude from Columbia University with an undergraduate degree in biology. Prior to moving to New York, she obtained a degree in communications and public relations and worked as a journalist at her hometown in Latvia.

Dr.Shurdut believes in individual, empathetic, and collaborative treatment approach. Through her residency and work experiences, Dr.Shurdut has developed expertise to treat various mental health conditions including mood disorders, anxiety, OCD, ADHD, PTSD. While her primary focus is medication management, she also incorporates CBT, psychodynamic and supportive psychotherapy.

Dr.Shurdut’s goal is empowering patients to participate in their healthcare choices. As a psychiatrist, she feels honored to witness the complexity of the human experience, and curious to explore the factors that contribute to it.  On intake appointment, she will take time to understand your concern, provide assessment, discuss treatment options and collaboratively decide on most appropriate action. The follow up appointments are usually 30 minutes and include a psychotherapy modality.

Dr. Jiang is a board-certified adult psychiatrist. His practice focuses on medication management and supportive therapy. His major goal is for treatment to be patient centered, with a focus on high quality, evidence-based care in the safest and most meaningful way. Dr. Jiang completed an undergraduate degree at the University of California, Los Angeles. He received his medical degree from Oakland University William Beaumont, School of Medicine. He then completed his psychiatry residency at Loyola University Medical Center. Dr. Jiang's areas of interest include depression and post-traumatic stress disorder.‍

Dr. Absar Tahir is an adult psychiatrist double-boarded in psychiatry and internal medicine who specializes in evidence-based, holistic, and individualized care. He graduated from the University of Alabama at Birmingham, where he earned both his undergraduate and medical degrees. Dr. Tahir completed sequential residency training in both internal medicine at the Mayo Clinic in Rochester, Minnesota, followed by psychiatry at Emory University in Atlanta, Georgia. Dr. Tahir integrates his knowledge of psychiatry and internal medicine to address the complex interplay between mental and physical health, ensuring a comprehensive and thoughtful approach to diagnosis and treatment. Throughout his career, he has helped patients from all walks of life, from diverse backgrounds, with a compassionate and empathetic treatment style. He strives to ensure his patients feel their voice is heard while working collaboratively towards achieving their treatment goals. As a psychiatrist, he specializes in the treatment of depression, anxiety disorders, bipolar disorder, obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and attention-deficit/hyperactivity disorder (ADHD). He is also highly experienced in treating psychiatric problems in patients with medical comorbidities.