Natalie Cummings, MD

Dr. Walter Piddoubny is a double boarded psychiatrist in Adult Psychiatry and Consultation Liaison Psychiatry. He completed his undergraduate degree at Stony Brook University followed by his medical degree at SUNY Buffalo School of Medicine and Biomedical Sciences. He completed his Psychiatry Residency at Stony Brook University Hospital followed by his fellowship in Consultation Liaison Psychiatry at Yale New Haven Hospital. Dr. Piddoubny has held academic appointment at Stony Brook University Hospital practicing as a consultant psychiatrist as well as Associate Program Director of the Psychiatry Residency Program. He has been actively involved in teaching and was awarded "Teacher of the Year" in 2018 by the psychiatry residents. Dr. Piddoubny's practice focuses on medication management. Typically, he offers this in conjunction with supportive or emotionally focused therapy during 30-minute follow-up visits. Occasionally, Dr. Piddoubny may believe that additional therapy is warranted and ask that you bring a therapist into your care team in order to provide the best possible outcome.‍

Dr. Kristina Foreman is a board-certified psychiatrist and child and adolescent psychiatrist who earned her medical degree from St. George’s University and completed both psychiatry residency and fellowship at the University of Vermont Medical Center. She served for four years as an attending on a high-acuity inpatient adolescent unit in Denver, leading a multidisciplinary team in the care of complex cases. She also presents nationally on Positive and Lifestyle Psychiatry and has taught these approaches to fellows and residents.

Her style is open, thoughtful, and relationship-focused, creating a space where patients feel safe sharing what matters most. She brings a therapeutic mindset to every encounter and practices strengths-based care to help people connect with resilience and agency. Trained in the Vermont Family-Based Approach, she values family involvement and blends medication management with therapeutic principles and lifestyle psychiatry to support emotional flexibility and values-driven change.

Dr. Foreman begins by gaining a full understanding of each patient’s history, strengths, challenges, and hopes for treatment. She builds individualized plans that may include medication, lifestyle strategies, psychotherapy-informed tools, and family participation when helpful. She incorporates ACT, DBT, CBT, and positive psychology concepts to foster insight and skill development. Follow-up visits focus on refining the plan so progress feels steady, collaborative, and aligned with patient goals.

‍

Dr. Bartek holds the position of Staff Psychiatrist at Talkiatry. She is board-certified in General Psychiatry, Pediatrics, and Child and Adolescent Psychiatry. She has been caring for children and adolescents as a physician for more than 15 years. Dr. Bartek's approach is holistic, collaborative, supportive, and patient-centered. Dr. Bartek draws on her years as a pediatrician working with families and children in her work as a psychiatrist. Dr. Bartek incorporates therapeutic techniques into medication management visits, but she may also recommend adding a therapist to your care team for the best results. She received her medical degree from the University of Washington School of Medicine in Seattle, WA, before moving to Memphis to complete her residency in Pediatrics at the University of Tennessee Health Sciences Center and Le Bonheur Children's Hospital. She completed her undergraduate studies at Haverford College in Pennsylvania. After completing training, she remained in Memphis and worked in the Le Bonheur Children's Hospital Emergency Department as a pediatrician. She then moved to Nashville to work at the Monroe Carell Jr. Children's Hospital at Vanderbilt in the Emergency Department Fast Track and After-Hours Clinics. Dr. Bartek transitioned to primary care pediatrics at Pediatric Associates of Davidson County for several years before returning to the University of Tennessee Health Science Center in Memphis to complete the Child and Adolescent Psychiatry Post-Pediatric Portal Fellowship program. Dr. Bartek's primary clinical focus is treating children and adolescents.

Dr. Sheena Dohar is a board certified general psychiatrist. Before joining Talkiatry, she practiced extensively in community mental health with adults of all ages in both outpatient and inpatient settings and as the medical director of several intensive outpatient and dialectical behavioral therapy (DBT) based programs. She has experience in private practice and in the dual diagnoses of mental health and substance abuse disorders. Dr. Dohar graduated from Carnegie Mellon University with a Bachelor of Science in Biology and Psychology and then completed medical school at West Virginia University School of Medicine. She trained during her residency at WVU, where she served as a chief resident and received the Brandon K. Fuller Award for Physician Empathy in 2017. Dr. Dohar's practice focuses on medication management. Her goals include helping people feel comfortable seeking treatment as well as promoting an understanding of the purpose and reasoning behind the use of various medications to treat psychiatric disorders. Typically, she offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. When Dr. Dohar may believe that additional therapy is also needed, she will ask that you bring a therapist into your care team to provide the best outcome. Dr. Dohar appreciates and values working with therapists within the Talkiatry practice and in the community in a collaborative effort to promote wellness. She strives to build strong therapeutic relationships with the people that she sees in her practice. Her passions include working in the community at large to encourage a better understanding of mental health disorders and to promote suicide awareness and prevention. She has interests in pharmacogenomics as well as treatment resistant approaches to depression. Dr. Dohar appears in several professional publications.‍

Dr. Sierra-Cintron is board-certified in adult psychiatry by the American Board of Psychiatry and Neurology and has been in practice for 12 years. Dr. Sierra-Cintron focuses her practice on medication management. She also engages in supportive therapy in a comprehensive way, focusing on the patient as a whole and not just the symptoms. Dr. Sierra-Cintron has a broad understanding of vitamin support as an adjunctive treatment to traditional medication. She has broadened her understanding of second-line treatment, having been certified in Electroconvulsive Therapy (ECT), conducting clinics in Clozapine and Long-Acting Antipsychotics (LOA), and even conducting assessments for patients interested in weight loss surgery. Dr. Sierra-Cintron has a comprehensive approach to treatment, and might consider the addition of therapy, either by referral or collaborating with an existing therapist for a more rounded approach and improved outcome. Dr. Sierra-Cintron received her medical degree from the Universidad Central del Caribe located in Bayamon, Puerto Rico. Upon graduation, she relocated to Philadelphia, where she started her residency program at Einstein Medical Center. After completing her training, she worked for 8 years in a community mental health clinic, treating an underserved population in all modalities of psychiatric care. In her 12-year career, Dr. Sierra-Cintron has treated both adult males and females, including seniors. This has led to varied and wide-ranging diagnoses during the length of her career. After leaving the community clinic setting, she started working for an outpatient clinic in a suburb of Philadelphia. Dr. Sierra-Cintron's current areas of focus are adults with Mood Disorders, Anxiety Co-Occurring Substance disorders, as well as patients with varied concomitant medical problems.‍

Dr. Sean Culver is an outpatient psychiatrist with experience treating a wide variety of disorders across multiple distinct age groups. He completed his undergraduate education at the University of Pittsburgh, graduating summa cum laude while majoring in neuroscience. He attended medical school at the Ohio State University College of Medicine, where he was granted an annual merit scholarship. Dr. Culver then remained at the OSU Wexner Medical Center for residency training. Outside of psychiatry, he enjoys numerous interests including soccer, hockey, music, photography, and video games.

During residency, Dr. Culver developed particular interest in working with young adults, college students, and athletes, but is comfortable with patients of all ages. He strongly believes in the practice of evidence-based medicine, utilizing the most current research to guide recommendations. He is a strong advocate for patient autonomy and therefore provides psychoeducation on diagnoses and medications so that each patient can make informed decisions which align with their own values.

Dr. Culver approaches each patient in the context of their individual interests, family dynamics, and life goals. He understands that not every patient requires or desires medication and is comfortable in a number of psychotherapy techniques including cognitive behavioral therapy, psychodynamic therapy, and supportive therapy. He emphasizes a trusting and honest therapeutic relationship with his patients.

‍