Meet Our Clinicians

Dr. Tian Duke-Sui, MD

Child, Teen & Adult Psychiatrist

Tian Duke-Sui, M.D. is a Child, Adolescent, and Adult Psychiatrist. Dr. Duke-Sui is the Medical Director of Family Psychiatry Practice & Associates (FPPA). He completed his General Psychiatry Residency at the University of Florida and his Child and Adolescent Psychiatry Fellowship at the University of North Carolina.

Dr. Duke-Sui practices evidence-based medicine that utilizes the most current research in providing diagnostic assessments, medication management, individual psychotherapy, and consultative evaluations for children, adolescents, adults, and seniors. Dr. Duke-Sui values the collaborative care model to create a patient-centered team that incorporates patient goals. Dr. Duke-Sui strives to provide an exceptional quality of care while integrating a multidisciplinary approach to meet the unique physical and behavioral health care needs for individuals with complex medical and psychiatric histories.

Dr. Duke-Sui completed his General Psychiatry Residency at the University of Florida where he treated children, adolescents, adults, and seniors. He saw patients in the inpatient setting at UF Shands Hospital and UF Health Psychiatric Hospital in addition to the outpatient setting at UF Health Springhill's multispecialty medical facility where he saw patients in the adult psychiatry clinic, adult neurodevelopmental disorder clinic, and child/adolescent psychiatry clinic. He also treated patients with co-existing anxiety, mood, and impulse control disorders with Parkinson’s Disease and other neurodegenerative disorders in the movement disorder clinic at the Norman Fixel Institute for Neurological Diseases. As part of the collaboration with the Neurology and Neurosurgery services at the Norman Fixel Institute for Neurological Diseases, Dr. Duke-Sui also provided psychiatric evaluations for deep-brain stimulation (DBS) procedure candidates. During General Psychiatry Residency, Dr. Duke-Sui provided inpatient diagnostic clarification and treatment for military veterans in the dual-diagnosis substance abuse and mental health unit at the Malcom Randall VA Medical Center in Gainesville, Florida.
During his Child and Adolescent Psychiatry Fellowship at the University of North Carolina Hospitals, Dr. Duke-Sui trained at the nationally acclaimed TEACCH Center (Treatment and Education of Autistic and related Communications Handicapped Children) in Chapel Hill. Dr. Duke-Sui has expertise in management of medically complex neurodevelopmental disorders and their intersection with comorbid anxiety disorders, mood disorders, psychotic disorders, rare genetic disorders, and their often-comorbid chronic health conditions. Dr. Duke-Sui provided both medication management and psychotherapy at the UNC Child and Adolescent Psychiatry Clinic as well as the UNC Neurodevelopmental Disorders Clinic in Chapel Hill. In addition, Dr. Duke-Sui brings his experience of collaborating closely with a team of physicians, psychologists, and social workers at the UNC Child and Adolescent Outpatient Program in Raleigh to provide longitudinal weekly parent and child / adolescent psychotherapy.
Dr. Duke-Sui enjoys exploring the intersection of technology and the mental-health space. In 2019, he presented a workshop in San Francisco for the annual American Psychiatric Association (APA) conference on topic of Influence of Mainstream Social Media and Social Movements on Mental Health Issues (Duke-Sui T, Bindshedler A, Knudson C, Korah T., May 2019). At the start of the COVID-19 pandemic, Dr. Duke-Sui was selected to be part of the Department of Psychiatry’s technical peer support team to help implement the use of telehealth in its clinics in the University of Florida health system. During his fellowship at the University of North Carolina, Dr. Duke-Sui developed virtual tours for the UNC General Psychiatry and Child & Adolescent Programs.
Dr. Duke-Sui is committed to improving access to community mental health resources. He received the Mark W. Herbold Memorial Award for displaying the ability to overcome tremendous obstacles in life during his medical education at the University of Florida College of Medicine and continues to provide care for the community where he practices. In 2021, Dr. Duke-Sui helped create the Wake County Intellectual and Developmental Disabilities (IDDs) / Autism Spectrum Disorder (ASD) clinic in Raleigh. Dr. Duke-Sui and members of the Wake County IDD/ASD clinic team presented on the topic of evidence-based approaches to improving care of autistic and developmentally disabled individuals in the emergency department setting at the WakeBrook Behavioral Health Facility in 2022.
If you would like to schedule an appointment with Dr. Duke-Sui, please contact the friendly and courteous front staff at (919) 233-4131.

Britney Steyer, PA-C

Child, Teen & Adult Psychiatry

Britney Steyer PA-C, is a Physician Assistant with a passion for mental health and helping patients feel genuinely heard and supported. She has a particular interest in the unique mental health needs of adolescents, young adults, and women.

Britney earned her Master of Health Sciences in Physician Assistant Studies from the University of South Alabama. She completed her undergraduate education at Michigan State University, where she earned a Bachelor of Science in Human Biology with a minor in Health Promotion. Her background in health promotion helped shape her interest in treating the whole person and recognizing the important connection between mental health, physical health, relationships, lifestyle, and overall wellbeing.

During PA school, Britney intentionally pursued multiple clinical experiences in psychiatry, gaining exposure to mental health care across outpatient, inpatient, and substance use treatment settings. Working with patients from a variety of backgrounds and at different stages of their mental health journeys solidified her passion for psychiatry and taught her the importance of meeting each patient where they are. She enjoys helping patients navigate anxiety, depression, ADHD, relationships, and major life transitions.
Outside of work, Britney loves reading, traveling, weightlifting, and going on long walks. Originally from Ohio, Britney grew up vacationing in the Outer Banks and quickly learned she prefers North Carolina summers to Midwest winters. Whether she’s traveling somewhere new, reading a good book, or staying active, Britney enjoys finding new ways to prioritize both physical and mental wellness.
Britney is excited to join FPPA and looks forward to creating meaningful, lasting relationships with her patients while helping them feel more confident, supported, and empowered in their mental health care.
To schedule an appointment with Britney Steyer, PA-C, please contact our office at (919) 233-4131. Our friendly front desk team will be happy to assist you.

John Kwon, PA-C

Child, Teen & Adult Psychiatry

John Kwon PA-C, is a compassionate and patient-focused Physician Assistant who brings a strong foundation in pediatric and general medicine, along with a genuine passion for providing individualized, holistic care.

John earned his Master of Physician Assistant Studies from East Carolina University in 2023. He also holds a Master’s degree in Physiology from North Carolina State University and dual Bachelor of Science degrees in Biochemistry and Biology from the University of North Carolina at Chapel Hill. His academic background has provided him with a comprehensive understanding of the biological sciences and a commitment to evidence-based, patient-centered treatment.

Before joining FPPA, John practiced in a pediatric primary care setting in Raleigh, where he conducted comprehensive physical exams, created personalized treatment plans, and collaborated closely with interdisciplinary care teams. He is especially skilled in engaging children and adolescents, helping families feel informed and empowered throughout the healthcare journey.
John has also worked as a rock climbing coach in Chapel Hill—an experience that reflects his energetic, hands-on approach and natural rapport with children and teens. He is excited to continue building trusting relationships with patients of all ages and their families here at FPPA.
Outside of work, John enjoys rock climbing, dancing (enthusiastically but self-admittedly poorly), acro-yoga, weightlifting, volleyball, and spending time with loved ones. A devoted foodie, he especially enjoys exploring Asian cuisine and new local eats.
John looks forward to meeting new patients and supporting their mental wellness with empathy, curiosity, and personalized care.
To schedule an appointment with John Kwon, PA-C, please contact our office at (919) 233-4131. Our friendly front desk team will be happy to assist you.

Lee Davis, LCMHC-CRC

Teen & Adult Mental Health Counseling

Lee Davis, LCMHC, CRC is a Licensed Clinical Mental Health Counselor and Certified Rehabilitation Counselor in the state of North Carolina. Lee believes in approaching counseling from a person-centered perspective where the client is seen as the expert in their own lives. He uses a wide range of evidence-based practices specifically tailored to each client’s needs, goals, and preferences to help facilitate the most desired outcomes. Lee believes in working in collaboration with the client and incorporating the client’s feedback to assist in the therapeutic process. Lee primarily works with older children, adolescents and adults.

Lee completed his master’s degree in clinical rehabilitation and mental health counseling at the University of North Carolina at Chapel Hill in 2023. Prior to his master’s degree he spent years working as an EMT, in an inpatient psychiatric hospital, and in a behavioral health emergency department. He has an array of experience in multiple settings within the mental health field, and he has been able to use those experiences to best serve his clients. Due to his work as an EMT, he has a passion for first responders and conducted research while in his master’s program looking into methods that build resilience in individuals and decrease the likelihood of developing PTSD. Lee is committed to improving access to mental health resources for first responders and providing psychoeducation.

Lee also has a passion for athletes who are struggling with motivation and performance related anxiety. While receiving his bachelor’s degree in psychology at North Carolina State University, he was a member and team captain for the NCAA wrestling team. He went on to compete professionally in the hopes of making a world and Olympic team where he was a multiple time U.S. Open All-American and World Team Trial qualifier. He has experience working with athletes on how to mentally prepare, train, and compete at a high level. In his free time Lee coaches youth and high school wrestlers to compete throughout the state and country. He has coached multiple state champions and high school All-Americans in wrestling.

Alissa Duke-Sui, RN

Registered Nurse - Psychiatry

Alissa Duke-Sui, R.N. is a Registered Nurse and the Practice Manager at Family Psychiatry Practice & Associates (FPPA). She has been in the healthcare field since 2009, beginning her career as a Paramedic in both rural and urban emergency medical services in Michigan. In 2017, she earned her Registered Nurse certification and joined the University of Florida Hospital, where she specialized in critical care within the Cardiac Intensive Care Unit and the Surgical Thoracic Intensive Care Unit. Her expertise included the management of patients with chronic heart failure, multisystem organ failure, and those undergoing pre- and post-heart and lung transplantation.

In 2019, Nurse Duke-Sui transitioned to the field of psychiatry, serving at the University of Florida’s inpatient psychiatric hospital. In this role, she provided comprehensive care for children, adolescents, and adults with complex psychiatric conditions, including mood disorders, acute mental health crises, anxiety, ADHD, and autism spectrum disorders.

In 2020 Nurse Duke-Sui joined the University of North Carolina Hospital, where she provided specialized care for patients experiencing acute psychotic episodes. She also played a key role in the treatment of individuals with eating disorders, postpartum depression and psychosis, adolescent mental health conditions, and psychiatric disorders related to COVID-19.
During the pandemic, she temporarily returned to the Intensive Care Unit, utilizing her critical care expertise to support the treatment of critically ill patients while continuing to pursue her passion for psychiatry. She served as a strong advocate for patients and their families navigating the acute stress and challenges brought on by the pandemic.
Nurse Duke-Sui also contributed to the Psychiatric Consult Liaison Service at Duke Regional Hospital as a Behavioral Health Rounding Nurse. In this role, she worked closely with medical nursing teams and ancillary staff to enhance the care of patients with psychiatric concerns in a medical setting, effectively integrating her dual expertise in medicine and psychiatry.
At Family Psychiatry Practice & Associates, Nurse Duke-Sui is dedicated to ensuring high-quality patient care by coordinating treatment plans, addressing patient inquiries, and facilitating seamless communication between healthcare providers to support the well-being of individuals and families.

The receptionist Chelsea always has a smile on her face and is welcoming when we arrive. It is a wonderful practice, great location and great employees! - M.S.

As a (scattered, busy, over-scheduled, overwhelmed, over-extended) neurodivergent mom with neurodivergent kids, FPPA has been huge benefit to my family. Everyone from the front desk staff to the providers is kind and approachable, and it's apparent that they really care about their patients. - M.O.

Above all, their skills as a psychiatrist are simply outstanding. Their expertise and knowledge were evident in every interaction. They were able to guide me through challenging times with an ease that speaks volumes about their experience in the field. - D.P.

Our Mission

Our mission is to provide superior, comprehensive and integrative mental health services for children, adolescents and adults. Our programs, treatments, and care plans are designed to meet the needs of the individual within the context of the family, community and environment.

We are always here to listen! Please reach out to our friendly reception team to ask questions about services provided to see if FPPA is the right fit for you and your family!

Our Commitment To You

FPPA is committed to bringing talented, extraordinarily trained professionals with diverse backgrounds and experiences into our practice. Within our offices we have the convenience of frequent and intensive collaboration to provide superior, comprehensive services to our patients. With patient permission, we also maintain close relationships with local pediatricians, family physicians, other medical specialists, schools, clergy and other mental health professionals, and enjoy the interdisciplinary discussions that produce a truly individualized plan for change for each of our clients.

Each of our clinicians is specialized in treating children, adolescents and/or adults. Additionally, each professional has their own subspecialty areas of expertise. Overlapping areas of expertise allow for second opinions and comprehensive treatment.