MARYLAND
ATHLETIC TRAINERS'
ASSOCIATION
Dr. Caroline Siebens has known that she's wanted to be an Athletic Trainer since her freshman year of high school. As a high school student, she interned in her athletic training room all 4 years, before attending the University of Pittsburgh to get a Bachelor's of Science degree in Athletic Training (with a Minor in French). Upon graduation, Dr. C went down to the University of Southern Mississippi to work as a licensed Athletic Trainer with the Golden Eagles football program for two years, while obtaining a Master's of Science in Sport Management. In 2016, upon completion of her degree requirements, she moved to Maryland to be closer to family and to work at Towson Sports Medicine with a variety of contracted sites; including Concordia Preparatory School, Dulaney High School, Garrison Forest School, and Loyola University Rec Sports. She returned to Athletic Training studies in 2018 and, after earning her Doctorate in Athletic Training with a Certificate in Teaching in Higher Education in 2020, became the Head Athletic Trainer for Mount Saint Joseph High School before transitioning to her role with Baltimore City Schools. Dr. Siebens currently serves Mergenthaler Vocational Technical School (MerVo- Go Mustangs). Dr. Siebens has served in a variety of professional advocacy roles, beginning as a Symposium committee member in 2016-2018, before becoming Young Professionals’ Chair 2018- 2021, Membership and Electronic Communications Chair 2021- 2024, and most recently as Maryland Athletic Trainer's Association Vice President.
Brian Perez earned his Bachelor of Science degree from Ithaca College in 2005 and his Master of Science in Athletic Training from West Virginia University in 2007. He began his professional career as an Assistant Athletic Trainer at Muhlenberg College in Pennsylvania before relocating to Maryland in 2010.
Since joining Towson Sports Medicine in 2010, Brian has served in several leadership roles, including Head Athletic Trainer, Outreach Coordinator, and most recently, Operations Manager. Throughout his career, he has remained committed to advancing athletic training services, fostering community partnerships, and supporting the professional development of athletic trainers throughout Maryland.
Brian has been actively involved with the Maryland Athletic Trainers' Association (MATA), serving as the Committee on Practice Advancement (COPA) Chair and as a member of the Education Committee. He has also served on the Maryland Board of Physicians Athletic Trainer Advisory Committee (ATAC) as both a committee member and committee chair, contributing to the advancement and regulation of the athletic training profession within the state.
Originally from New Jersey, Brian resides in Parkville, Maryland, with his wife, Jean, their two daughters, Meghan and Erin, and their Golden Retriever, Rosalita (“Rosie”).
Nathalie Elliott earned her Master of Science in Athletic Training in 2022 and began her career with High Point University’s cross country and track & field teams, where she developed and implemented a Relative Energy Deficiency in Sport (RED-S) screening within the pre-participation examination process to support early identification and intervention for at-risk student-athletes.
She went on to join the University of Maryland’s University Health Center and Sports Medicine staff, expanding musculoskeletal and health services across campus. There, she helped establish interdisciplinary collaboration between the School of Performing Arts and the University Health Center, contributing to injury prevention and rehabilitation programming, while also supporting the development of a campus-wide concussion rehabilitation platform. She provided comprehensive care for the men’s and women’s golf teams, including injury prevention, treatment, and rehabilitation services.
Following her time at UMD, Nathalie joined Baltimore City Public Schools’ Athletics Health and Safety Department as one of the city’s first full-time athletic trainers. At the Academy for College and Career Exploration, she built a comprehensive sports medicine program for high school student-athletes, including injury evaluations, rehabilitation, emergency care, and referral coordination. She also developed the school’s first Emergency Action Plan, created Baltimore City Public Schools’ initial concussion policy and sideline evaluation tool, and led staff education on emergency response in sport. She is now the first ever Baltimore City Athletic Trainer of the Year, having been nominated by her peers.
She currently serves as Secretary of the Maryland Athletic Trainers’ Association (MATA).
MATA Treasurer, Karie Johnson is currently the AT for Patterson Mill High School with ATI Physical Therapy and has approximately 25 years of experience at the Secondary School level. She obtained her Bachelors of Science in Athletic Training and double majored in Spanish at Minnesota State University, Mankato and achieved Certified Athletic Trainer status before graduating. She then earned a Masters of Exercise and Sport Science at the University of Florida where she worked as a Graduate Assistant at Santa Fe High School in Alachua, FL and found her love of working with Secondary School athletes. Karie worked briefly at Fort White High School as their Athletic Trainer, then took a position with Strive! Physical Therapy Centers as an outreach AT for Trinity Catholic High School in Ocala, FL.
After moving to Maryland in late 2004, Karie has worked as a Secondary School Athletic Trainer in Harford County for the past 19 years. She originally started in Harford County with MedStar, working at Edgewood and Havre de Grace High Schools as well as clinical duties, then her third year was at Edgewood and Harford Technical High Schools and Harford Community College. After that year, she was stationed at Edgewood and Patterson Mill High Schools for the next 4 years, then in the 2012/13 School Year was full time at Patterson Mill High School. In 2015, Karie was hired at ATI Physical Therapy and remained at Patterson Mill full time and has just ended her 16th year as the Huskies AT.
Karie is originally from Kansas City, Missouri and lives in Bel Air, MD with her husband and 2 teenaged kids (one just done with her first year in college). She enjoys kayaking, family time, board/card games and rooting on the Chiefs and Royals.
Rachel D. Moore M.Ed, LAT, ATC is an ATC who is a full-time Physical Education/Health instructor for MCPS. She was formerly at Bullis School in Potomac, Maryland for 13 years. She graduated with her B.S. in Athletic Training Education from New Mexico State University and her Masters of Education From Concordia University, Portland. She has been a BOC Certified AT since 2005. Moore was formerly a Kinesiology and Rehabilitation, Public Health instructor, and committee chair for the Diversity Equity and Inclusion committee for the state of Maryland. She is married to her husband Christopher Moore and has a daughter Autumn who is 8 and a son Joshua who is 4.