Our Audiology Team

Fenja Mattson, Au.D., CCC-A

Dr. Mattson grew up in Plantation, FL before attending Florida State University to pursue her bachelor’s degree in Business Administration. She then moved to Greenville, NC to pursue her master’s degree in Speech, Language & Auditory Pathology. In January 2004, she completed her Doctor of Audiology degree at Arizona School of Health Sciences before joining the JSHC Team in October 2004.

In 2015, Dr. Mattson received the Jacksonville Business Journal Health-Care Hero Award, which honors Northeast Florida professionals who improve health care and save lives, for her work treating veterans with hearing loss.

Dr. Mattson has also received additional training in Tinnitus Retraining Therapy (TRT) for hyperacusis and tinnitus management at Towson University.

Fun Fact: Dr. Mattson is fluent in German.

Jenna Loffredo, Au.D., CCC-A

Dr. Loffredo grew up in Exton, PA before attending Pennsylvania State University. There, she received a Bachelors of Science in Communication Sciences and Disorders with Minors in Human Development and Family Studies, and Special Education. She later attended graduate school at the University of Pittsburgh, where she completed her Doctor of Audiology.

Throughout her academic career, Dr. Loffredo held leadership positions at both the local and national level of the Student Academy of Audiology. She received further recognition as a Leadership Education in Neurodevelopmental and Related Disabilities (LEND) Trainee. Her research in Auditory Neuropathy Spectrum Disorder won the American Academy of Audiology Academy Research Conference Student Presentation Grant, and her research on Krabbe Disease was recognized as a Grand Rounds Case Presentation at the Pennsylvania Academy of Audiology.

Prior to joining the JSHC Team, Dr. Loffredo completed clinical rotations at UPMC Children’s Hospital of Pittsburgh, as well as the UPMC Center for Audiology and Hearing Aids. Most recently, she completed a four year externship at the Nemours/A.I. duPont Hospital for Children in Wilmington, DE. Through these positions, she has extensive experience in both adult and pediatric audiology care.

Fun Fact: Dr. Loffredo’s perfect Saturday consists of drinking coffee on the beach in the morning and watching college football all afternoon and evening. Outside of the world of audiology, you can find her walking the aisles of a hardware store, in the nearest bookstore, or trying to find the best taco in the city.

Sara Miers, Au.D., CCC-A

Dr. Miers graduated with a B.S. in Communication Sciences and Disorders from the University of Mississippi, before earning her Doctorate of Audiology from the University of Memphis. Dr. Miers is a board-certified audiologist and holds her Certification of Clinical Competence from the American Speech-Language-Hearing Association (ASHA).

Dr. Miers has extensive experience in diagnostic and rehabilitative audiology with both pediatrics and adults, with an emphasis on hearing aid management. She believes in a holistic approach to patient care that not only emphasizes hearing healthcare, but overall well-being. Her ultimate goal is to serve as an advocate for her patients and their families.

Fun Fact: In her free time, Dr. Miers and her husband enjoy spending time in the outdoors with their dog named Rosie.

Audiology Assistant: Sydney Prinzi

Sydney joined JSHC in February 2020 as Front Desk Coordinator with previous customer service experience as a Supervisor at Adventure Landing. She was promoted to Audiology Assistant in July 2020 after receiving extensive training in hearing aid repairs. Sydney is a graduate of Sandalwood High School, where she was involved in band and the Air Force Junior Reserve Officer Training Corps (AFJROTC). Currently, she is pursuing a major in Psychology at FSCJ.

Fun Facts: Sydney has played cello for 10 years—in addition to singing, playing the piano, bass, and a few other instruments! She also loves to hike up North whenever she gets the chance to, describing herself as a “mountain girl in a Floridian body.” Sydney’s husband is currently pursuing a Bachelor’s in Aerospace Science and will go into the Air Force as an officer following his graduation.