Briana Mathews, MD

Dr. Sumbal Akhter graduated from the University of Nevada at Las Vegas Psychiatry residency program. She has a wide range of experience, having worked at the VA, consult liaison psychiatry, and multiple inpatient/outpatient settings. She provides supportive psychotherapy and takes an integrative approach to her practice.

Dr. Justine Sever Chilelli, DO, earned her medical degree from the Lake Erie College of Osteopathic Medicine and completed her psychiatry residency and child and adolescent fellowship at the University of South Florida. She is board certified in General Psychiatry and Child and Adolescent Psychiatry. Her experience includes treating children, adolescents, and adults across outpatient, inpatient, consultation-liaison, school-based, and residential settings.

Dr. Chilelli values a collaborative, team-based approach where she and her patients work together to build a treatment plan. She emphasizes open and honest communication, aiming to improve quality of life and reduce the impact of mental health symptoms.

In the initial appointment, Dr. Chilelli focuses on understanding each patient’s history, concerns, and goals. She then develops individualized treatment plans that align with those goals, ensuring care that is thoughtful, supportive, and tailored to each patient’s needs.

Background and credentials

Dr. Sinner is board-certified in Psychiatry. He completed his psychiatry residency training at Dartmouth-Hitchcock Medical Center. With over 14 years of experience, he has worked in a variety of settings, including five years in inpatient psychiatry in Vermont, where he served as Medical Director for a state hospital psychiatric unit and taught medical students. He then spent five years working in an outpatient community mental health center in Pennsylvania before transitioning to telepsychiatry, providing care to individuals in Pennsylvania, Florida, and New York.

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Treatment approach

Dr. Sinner employs a collaborative, patient-centered approach, tailoring treatment plans to meet each individual's specific needs. His practice integrates pharmacotherapy with cognitive behavioral therapy (CBT) and supportive therapy as needed. He specializes in treating a wide range of psychiatric conditions, including depression, bipolar disorder, anxiety, ADHD, neuropsychiatric disorders, developmental disorders, and personality disorders. His philosophy is to provide personalized care that makes a meaningful impact at different stages of a patient’s life.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation focused on understanding their mental health concerns, history, and treatment goals. Dr. Sinner takes a compassionate and collaborative approach, working closely with patients to create individualized treatment plans. He ensures that each patient receives a balanced and effective combination of medication management and therapeutic interventions suited to their unique needs.

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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. Jennifer Shoenfelt is a staff psychiatrist at Talkiatry. She is double board certified in child and adolescent psychiatry and adult psychiatry. She has been practicing for over 14 years. Dr. Shoenfelt's practice focuses on child and adolescent medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. However, occasionally Dr. Shoenfelt may believe that additional therapy is needed and will ask that you bring a therapist into your care team to provide the best outcome. She provides treatment plans that include holistic recommendations for diet, exercise, and educational and psychosocial/spiritual aspects of care. She is known for listening to and respecting patients' stories and walking them on a path of recovery and growth. Dr. Shoenfelt received her medical degree from the Boonshoft School of Medicine at Wright State University in Dayton, Ohio. She earned her Bachelor of Science degree in Physical Therapy from The Ohio State University. Dr. Shoenfelt practiced for 14 years in physical therapy with a specialization in children with developmental and neurological disabilities before attending medical school. Dr. Shoenfelt has held multiple positions in hospital and outpatient psychiatry, including community mental health, developmental and foster care settings, and medical director positions. She has served as clinical faculty for both the Wright State Department of Psychiatry and the University of Cincinnati School of Medicine. She has a passion for the education of medical students, residents, and patients. Dr. Jennifer Shoenfelt is a staff psychiatrist at Talkiatry. She is double board certified in child and adolescent psychiatry and adult psychiatry. She has been practicing for over 14 years.

Dr. Sadiq Mirza earned his medical degree from Western University of Health Sciences in Pomona, California, and completed his psychiatry residency in San Bernardino, California. He has experience in both inpatient and outpatient psychiatry, and for the past five years, he has worked extensively in telepsychiatry, helping patients across a variety of care settings.

New patients can expect a collaborative, patient-centered approach grounded in open communication and mutual respect. Dr. Mirza prioritizes creating a warm and supportive environment where care is personalized to meet individual needs. His style empowers patients to take an active role in their mental health journey through informed decisions and compassionate treatment.

Dr. Mirza begins by thoroughly understanding each patient's unique history and goals during the initial session. This sets the foundation for trust and transparency. Together, they create tailored treatment plans with clear, achievable objectives. Ongoing follow-ups ensure progress is tracked, adjustments are made when necessary, and care remains responsive and effective.

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Dr. Mann is a double board-certified psychiatrist specializing in the care of adults, with additional expertise in the care of older adults. Her practice focuses on medication management for a wide range of psychiatric conditions. It incorporates various therapeutic modalities in order to optimize symptomatic improvement and enhance quality of life. Dr. Mann received her medical degree from St. George's University School of Medicine. She completed her residency training in psychiatry at Maimonides Medical Center, and fellowship training in geriatric psychiatry at Columbia University Irving Medical Center. Dr. Mann's approach is rooted in empathy. She believes in the importance of a strong therapeutic relationship in facilitating the healing process. She strives to empower patients on their journey to recovery by partnering with them in their care.