Stephen Geisler, MD

Dr. Luna Sanchez Rivera holds the position of Staff Psychiatrist at Talkiatry. After completing residency in 2016 at the Ponce Medical School Psychiatry Residency in Puerto Rico, she then moved to North Carolina to complete a subspecialty in Child and Adolescent Psychiatry at Duke University Health System. There, she transitioned into an assistant professor position, focused on structuring pediatric emergency psychiatric services, and helped support the consult and liaison pediatric service. Her years of experience have included working as an integrated care child psychiatrist within outpatient clinics at Duke University Health System, and she trained and worked as a staff psychiatrist at the Inpatient State Facility in North Carolina. She also served in the Dayton Children's Hospital outpatient clinics in Dayton, Ohio, the Appalachian Health System outpatient clinics in Linville, North Carolina, and more recently has been serving the Child and Adolescent inpatient population in Bangor, Maine. Dr. Sanchez Rivera has an approachable style aimed at providing a comprehensive evaluation for all age ranges and is comfortable managing various levels of diagnostic complexities. She provides supportive psychotherapy while using psychodynamic therapy skills to clarify her patient's constellation of symptoms, identify unifying themes and provide thorough psychoeducation throughout the process to drive positive outcomes. She integrates psychodynamic medication management approaches and is adept at family therapy interventions.

Marie Thompson, PMHNP, has over a decade of experience practicing in outpatient settings. She earned her undergraduate, graduate, and post-graduate degrees from Ursuline College in Pepper Pike, Ohio. Marie is dual certified as a Family Nurse Practitioner and Psychiatric Mental Health Nurse Practitioner, allowing her to provide well-rounded, holistic care to her patients.

Marie uses a team-based approach to help patients meet their treatment goals. She is dedicated to creating a trusting, non-judgmental environment where individuals feel safe, heard, and supported. Her goal is to enhance daily functioning and improve each patient’s overall quality of life.

Marie creates individualized treatment plans to meet each patient's unique needs. She works collaboratively to develop patient-centered goals and uses a thoughtful, compassionate approach to guide treatment. Her process prioritizes open communication, shared decision-making, and long-term wellness.

Dr. Steven Mathew is a trained adult and child and adolescent psychiatrist. He recently completed his child and adolescent psychiatry fellowship at the University of Miami/Jackson Health System, where he served as chief fellow. He completed his general psychiatry residency at Pine Rest Christian Mental Health Services in Grand Rapids, Michigan. Dr. Mathew earned his Doctor of Osteopathic Medicine from the Philadelphia College of Osteopathic Medicine’s Georgia campus, a satellite campus located in the Atlanta metro area. He graduated from the University of Georgia with a Bachelor of Science in Biology and afterwards obtained a Master of Public Health in Health Policy and Management.

Dr. Mathew has had extensive clinical experiences caring for patients across the lifespan in specialty inpatient units, partial hospitalization programs, emergency psychiatry, outpatient clinics, consult liaison psychiatry, and telemedicine. He has clinical expertise in treating depression, anxiety, trauma, OCD, ADHD, and tic disorders.

Dr. Mathew's treatment approach combines evidence-based medication management with supportive therapy, emphasizing empathy, collaboration, and goal-oriented care tailored to each patient and family.

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Background and credentials

Dr. Jonathan Myrtil is a board-certified adult psychiatrist. He earned his medical degree from Ross University School of Medicine and completed his residency in Adult Psychiatry at the University of Central Florida, affiliated with North Florida Regional Medical Center. After completing his training, he remained at North Florida Regional as an adult psychiatrist and supervising physician, gaining experience treating patients in inpatient, outpatient, partial hospitalization, and intensive outpatient program (IOP) settings.

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Treatment approach

Dr. Myrtil takes a collaborative approach to psychiatric care, integrating medication management with supportive therapy to provide well-rounded treatment. His primary focus is on treating adults with mood and anxiety disorders, PTSD, and ADHD. He prioritizes patient involvement in treatment decisions, ensuring that care plans align with individual needs and goals.

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What you can expect in a first visit

Patients meeting Dr. Myrtil for the first time can expect a thorough evaluation where he assesses their symptoms, treatment history, and personal goals. He fosters a supportive and collaborative environment, working closely with patients to create a personalized treatment plan that incorporates medication management and therapeutic interventions tailored to their specific 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. 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. Lisa Ekeanyanwu is a board-eligible psychiatrist who completed her psychiatry residency training at Stanford University. She has gained experience in a wide range of clinical environments, including inpatient and outpatient care, community mental health settings, emergency rooms, telehealth services, and international clinical fieldwork.

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Treatment approach

Dr. Ekeanyanwu’s practice is centered on pharmacotherapy, which she integrates with supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy to provide comprehensive psychiatric care. She takes a collaborative and individualized approach, tailoring treatment to meet each patient’s unique goals and improve their overall quality of life. She has a special interest in cultural and micro-cultural influences on mental health and strives to provide culturally competent care that respects each patient’s life experiences and values. When she believes additional therapy may be beneficial, she may recommend incorporating a therapist into the care team.

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What you can expect in a first visit

During the first visit, patients can expect a thorough evaluation where Dr. Ekeanyanwu carefully assesses their symptoms, medical history, and personal treatment goals. She fosters a collaborative and patient-centered environment, ensuring that each treatment plan aligns with the patient’s individual needs. She provides medication management along with therapeutic support and, when appropriate, may recommend additional therapy to optimize outcomes. Her approach prioritizes safe, effective, and culturally sensitive care that evolves to support patients throughout different stages of their lives.

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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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