Erin Harrell is a board-certified family psychiatric nurse practitioner with a primary interest in pervasive developmental and intellectual disorders. She first realized her passion for psychiatry and mental health during her eight years as an editor for the Journal of Clinical Psychiatry. She attended nursing school at the University of Memphis and worked as a critical care nurse at Methodist University Hospital. She completed her graduate degree in advanced practice nursing, specializing in psychiatry and mental health treatment, at the University of Mississippi Medical Center in 2015. She has worked in both inpatient and outpatient psychiatric settings since that time, and was mentored by the late Dr. Steven Rice.

She opened In Focus Psychiatry in August 2016 in an effort to meet the needs of her community. The Oxford location opened in October 2018. Erin's model of care emphasizes patient education, collaboration with healthcare and educational providers, and an empathetic approach to each patient's unique needs.

Erin sees patients of all ages at the Hernando office.

Tracy Burns is a board-certified psychiatric-mental health nurse practitioner. She has been with In Focus since August 2018. Tracy graduated from Northwest Mississippi Community College in 2010 with her Associate of Science in Nursing and from South University in 2016 with her Bachelor of Science in Nursing. She worked as a registered nurse in long-term care, medical-surgical nursing, and home health care. In 2018 she received a Master of Science in Nursing advanced practice degree from the University of Mississippi Medical Center.

Tracy sees adult patients in the Hernando office.

Katelyn Conner is a board-certified psychiatric-mental health nurse practitioner who provides compassionate, evidence-based mental health care to individuals across the lifespan. She earned her Bachelor of Science in Nursing from Baptist College of Health Sciences in 2013 and began her clinical career as a registered nurse at Parkwood Behavioral Health System. Driven by a deep commitment to mental health care, she went on to complete her Doctor of Nursing Practice (DNP) degree at the University of Tennessee Health Science Center in May 2017.

Katelyn has since worked in both inpatient and outpatient psychiatric settings, gaining extensive experience in treating mood disorders, anxiety, trauma-related conditions, and other complex mental health challenges. She joined In Focus in August 2019 and currently sees patients of all ages at the Hernando office, where she values a holistic and collaborative approach to treatment.

In addition to her clinical work, Katelyn is passionate about reducing stigma around mental illness and empowering patients through education and personalized care. In her free time, she enjoys spending time with her family.

Kristen Locke joined the practice in September 2020. She graduated from Northwest Mississippi Community College in 2008 with an associate’s degree in nursing. She received her Bachelor of Science in Nursing in 2013 from Delta State University. Her background includes over 10 years of emergency nursing. Kristen graduated from University of Tennessee Health Science Center in 2017 where she received her doctorate of nursing practice degree. She worked in outpatient community mental health before joining In Focus Psychiatry.

Kristen sees patients of all ages at the Hernando office.

Alison Perryman, PMHNP-BC, is a board-certified Psychiatric Mental Health Nurse Practitioner who joined the practice in May 2023. She began her nursing career in 1991 as a Licensed Practical Nurse, gaining experience in diverse clinical settings including emergency medicine, family practice, allergy, and urology.

Alison earned her Associate of Arts in Nursing from Northwest Mississippi Community College in 2004, followed by a Bachelor of Science in Nursing in 2005, and a Master of Science in Nursing Education in 2008 from The University of Mississippi Medical Center.

From 2006 to 2008, she taught in the Licensed Practical Nursing program at Northwest Mississippi Community College and transitioned into a full-time faculty role in the Associate Degree Nursing Program in 2008. There, she instructed courses in Psychiatric Nursing, Advanced Medical-Surgical Nursing, and served as Course Coordinator in Transitions until December 2020.

Alongside her teaching career, Alison continued clinical practice, working as a Burn ICU nurse and later serving in a COVID-ICU during the pandemic. She earned her second master’s degree—a Master of Science in Nursing with a specialization as a Psychiatric Mental Health Nurse Practitioner—from The University of Alabama at Birmingham in 2022.

Alison sees patients with diverse conditions across the lifespan at our Hernando location.

Alex Blackburn joined In Focus in August 2023. She graduated from the University of Mississippi Medical Center in 2019 with a doctor of nursing practice. Her background includes critical care and nursing administration, and she was formerly an assistant professor of nursing at Christian Brothers University. She continues as adjunct faculty, teaching Professional Nursing and Mental Health. Alex is a board-certified psychiatric nurse practitioner and sees patients of all ages in our Oxford office.

Mary Allen joined In Focus Psychiatry in October 2024 as a board-certified Psychiatric Mental Health Nurse Practitioner. She completed a Master of Science in Nursing from the University of South Alabama where she was inducted into Golden Key Honor Society and Sigma Theta Tau for academic excellence and nursing scholarship. Prior to joining InFocus Psychiatry, Mary Allen gained advanced practice nursing experience working in the outpatient and long-term care settings while providing care to children, adolescents, and adults with psychiatric disorders. 

Mary Allen’s nursing experience began upon graduating from the University of Mississippi Medical Center with a Bachelor of Science in Nursing serving in diverse nursing roles across patient populations and specialties for more than 16 years. Her passion for mental health flourished during her role as a clinical nurse educator in Behavioral Health which served as the catalyst for her current role as a Psychiatric Mental Health Nurse Practitioner. 

Mary Allen brings her experience treating patients across the lifespan with Depressive Disorders, Anxiety Disorders, Obsessive Compulsive Disorder, Attention Deficit Hyperactivity Disorder, Bipolar Disorder, Post Traumatic Stress Disorder, Schizophrenia, Schizoaffective Disorder, Autism Spectrum Disorder and co-occurring psychiatric disorders including personality disorders, eating disorders, and substance use disorders. 

Mary Allen practices in our Hernando, MS and Oxford, MS locations providing diagnostic evaluations and medication management for children, adolescents, and adults. 

Kasey Barham joined In Focus in February 2019 and serves as the Practice Manager for all locations. She earned her bachelor’s degree in Criminal Justice and Psychology from the University of Mississippi. Kasey brings a strong background in behavioral health operations and is especially passionate about fostering positive patient experiences. Her leadership focuses on building a supportive environment for both staff and patients, ensuring compassionate, efficient care at every level of the practice.

Jessica Cummings joined In Focus Psychiatry in October of 2020. She serves as the front office manager for both the Hernando and Oxford locations. She oversees the day-to-day operations of the front office to ensure everything runs smoothly and efficiently for our patients and team.

She  assists with scheduling new patient appointments, answering phone calls, and managing prescription prior authorizations. She is committed to maintaining a high standard of customer service and strives to ensure that every patient interaction is positive, professional, and timely. Supporting our staff and helping meet the needs of our patients is at the heart of everything she does. 

Kelly Self joined In Focus Psychiatry in April 2022 and is the receptionist in our Oxford office.

Megan Cantrell joined In Focus in July 2023. She is the insurance verification specialist for both locations.

Victoria Greer joined In Focus Psychiatry in December 2023 and is one of the first friendly faces patients see when they arrive. She assists with check-ins, greets new patients, and helps ensure the front office runs smoothly. Victoria enjoys creating a welcoming environment  and supporting patents as they begin their care journey with us. 

Lacey Cothern joined the Hernando office as medical assistant in January 2024. She is from Southaven, MS, and graduated from Delta Technical College with a phlebotomy certificate in 2023. She was previously a phlebotomist at Baptist Hospital.

Brandi Wilborn joined our Oxford front office staff in June 2025 and assist patients for both locations.

Byrdie Griggs studied Biology at the University of Texas at Arlington and earned her Herbalist Certification while living in Eugene, Oregon. She joined In Focus Psychiatry in July 2025 as part of the front office team. In her role, she supports both patients and providers by using her strong customer service skills to foster clear communication and ensure patients’ needs are met with care and efficiency. With a background that bridges science and holistic wellness, she is committed to creating a welcoming and supportive experience for every individual who walks through the door.