Mary Phelps, DO

Dr Marc Whaley is a Board Certified Psychiatrist in Adult Psychiatry, with extensive clinical experience over the past 50 years, mostly in outpatient treatment, and some in-patient settings, in addition to Forensic (legal) ones. He received his undergraduate degree at Johns Hopkins in Baltimore and his medical degree at Tufts Medical School in Boston, and then went on to train at Tufts New England Medical Center in Boston, for his psychiatry residency. He has held leadership roles, Chief of Department of Psychiatry in a community hospital, President of the local Psychiatric Chapter of the Massachusetts Psychiatric Society, and founder of a private group outpatient psychiatric practice on Cape Cod called The Psychiatric Collaborative. In 2018, he closed his private practice, seeking more free time in the later years. It did not take long, however, to get back to active practice, first by reviewing files for insurers around the issue of medical necessity, disability, and other psychiatric determinations. He got his first experience in Telepsychiatry when working remotely for a community hospital, far from his home, evaluating patients presenting to their busy ER; He experienced this as a practical and efficient way of delivering psychiatric services. When that contract ended after 3.5 years, he learned about and joined Talkiatry to work as a Staff Psychiatrist, in their well-organized comprehensive program. Dr. Whaley has been recognized by his peers for his career achievement, and he was the 2022 recipient of the Outstanding Psychiatrist Award for Clinical Psychiatry from the MA Psychiatric Society. He has also been a regular panel member, over the past 13 years, for a monthly NPR Radio Talk Show, ( WGBH Cape Cod affiliate, WCAI), The Point with Mindy Todd, focusing on multiple mental health topics.

Dr. Stephen Byrd is a clinical psychiatrist at Talkiatry. He is board-certified in both psychiatry and addiction medicine. He has been practicing for over 31 years in a wide variety of settings, including working with inpatients and outpatients in private practice, community mental health, geriatric, VA, and community hospital/medical center settings. Dr. Byrd's practice focuses on evidence-based medication management, usually provided in conjunction with 30-minute supportive psychotherapy, which is informed by cognitive behavior therapy, psychodynamic psychotherapy, and motivational enhancement. When more intensive therapy is needed, Dr Byrd may ask you to include a therapist as part of your care team. He received his medical degree from the University of Cincinnati College of Medicine in Ohio and completed his residency training in psychiatry at Case Western Reserve University School of Medicine, University Hospitals of Cleveland. Throughout his career, he has treated patients with a wide variety of conditions in both inpatient and outpatient settings. Additionally, He has served as director of inpatient geropsychiatry at Lutheran Hospital in Cleveland, Ohio, program manager of the substance abuse treatment program at the Charlie Norwood Veterans Affairs Medical Center in Augusta, Georgia, and medical director of outpatient behavioral health at Saint Alphonsus Regional Medical Center in Boise, Idaho. Throughout his career, Dr. Byrd has been active in training medical students and psychiatry residents, and he has held clinical teaching appointments at Case Western Reserve University School of Medicine, Northeastern Ohio Universities College of Medicine, Medical College of Georgia, University of Washington School of Medicine, Idaho College of Osteopathic Medicine and Pacific Northwest University of Health Sciences College of Osteopathic Medicine.�.�

Dr. Merna Guirguis is a general psychiatrist known for her patient-centered and accessible approach. She blends compassion with evidence-based care, creating a supportive environment where patients feel heard. Her practice integrates psychiatric medication management with psychoeducation, empowering patients to make informed decisions about their treatment.

Dr. Guirguis emphasizes collaboration and transparency. She listens carefully to each patient’s concerns, encourages questions, and works to build a trusting therapeutic relationship. Her style is approachable and adaptable, ensuring patients feel comfortable sharing their experiences and actively participating in their care.

She begins by reviewing each patient’s history, concerns, and goals to craft personalized treatment plans. Dr. Guirguis combines current clinical needs with long-term wellness objectives, adjusting care collaboratively over time. When appropriate, she may recommend additional therapy to complement medication management and optimize outcomes.

Dr. Richard Rise has created a successful career as a psychiatrist over the past 30 years. He has participated in a variety of treatment settings and has developed a wealth of experience at both prescribing medications, providing therapy, counseling, and even coaching. He takes an individual approach to treating others, recognizing individuals as unique and worthy of love, respect, and acceptance. He is compassionate, non-judgmental, and truly enjoys helping others. He tends to gravitate towards a combination of medication management (if indicated) and psychotherapy where he treats all facets of the individual. Dr. Rise believes that we are all unique and should be treated as such. He spent most of his career in private practice until deciding to retire in 2014. After this he spent the next 3 1/2 years, reading, studying, traveling, and spending time with his loved ones. In 2018 he was offered a position as a consultant overseeing Ketamine infusion therapy for treating treatment-resistant depression. When the pandemic hit in March of 2020, Dr. Rise was asked to assist a local psychiatric hospital deal with the unique and often deadly consequences of the virus. This proved to be a wonderful opportunity for personal growth and to improve the quality of life of many others. After working at the hospital for the 2 years, Dr. Rise joined Talkiatry to continue providing high-quality psychiatric care to others in a very loving, supportive, creative, and collaborative environment.

Meredith McMillan is a Licensed Mental Health Therapist with 9 years of experience working in mental health. She specializes in working with individuals who experienced trauma and toxic stress, as well as those with addiction issues, relationship challenges, and adjustment disorders. Ms. McMillan's therapy practice focuses on providing person-centered encouragement and support. She utilizes a trauma-focused cognitive behavioral approach to help you to develop your understanding of yourself and your challenges and enable you to utilize your strengths to facilitate your healing. She received a Master's Degree in Counseling Psychology from Palm Beach Atlantic University in Orlando, Florida, and established herself as a therapist working in community mental health in the Lakeland, Florida area. She spent several years working at Tri-County Human Services providing co-occurring outpatient substance abuse therapy. Later, she shifted to providing services to children through Tri-County's B-Net program and Children's Home Society. She went on to become the Clinical Supervisor at the Children's Home Society providing care to children and adolescents impacted by trauma and the child welfare system. Before joining Talkiatry, she also served as the clinical supervisor and therapist at The Mary Welsh Foundation, providing care to individuals of all ages and specializing in trauma and family issues. Ms. McMillan has worked with individuals dealing with a variety of mental health issues throughout her years of experience as a therapist. She has worked with people of all ages and has experience working with families and couples. She has had additional training to serve individuals dealing with addictions and with processing trauma. She has had extensive experience working with individuals dealing with mood disorders and anxiety, as well as relationship and parenting issues.

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.