Owner & Founder of Care On Call Pediatrics, Physician Assistant

Jonathan Salazar, PA-C is the founder and CEO of Care On Call Pediatrics. He is a highly experienced Physician Assistant with a Master in Medical Sciences from Nova Southeastern University. Jonathan has extensive expertise in pediatrics, trauma, emergency medicine, pediatric and adult urgent care, and pediatric orthopedics. With an additional background in child development and special education, and experience working with special needs children in schools and The Special Olympics, Jonathan is particularly skilled in techniques that comfort and calm children and alleviate anxiety, ensuring they feel safe and secure during their visits.

Jonathan brings a deeply personal and holistic approach to medicine—one that focuses on long-term wellness, prevention, and supporting the overall health of each child he treats. He partners closely with families to develop personalized care plans tailored to each child’s unique needs, health history, and developmental stage. These practices are not only a core part of Jonathan's healthcare approach but also a founding principle of Care On Call Pediatrics.

Jonathan lives in Nocatee with his family and is a devoted husband and father of two. His deep commitment to family, community, and compassionate care is reflected in every aspect of his practice. Jonathan works in collaboration with his supervising physician, Dr. Elizabeth Marquez, M.D.

Doctor of Nursing Practice, Pediatric and Family Nurse Practitioner

Larissa Frauenheim is a dedicated Family Nurse Practitioner with over 15 years of diverse nursing experience and a passion for delivering personalized, high-quality care. Board-certified by the American Nurses Credentialing Center, Larissa brings a compassionate, evidence-based approach to every patient interaction—empowering families to take charge of their children’s health and wellness.

Larissa earned her Doctor of Nursing Practice (DNP) from the University of North Florida and holds a Bachelor of Science in Nursing (BSN) from the University of Central Florida. Her clinical background spans pediatrics ICU, pediatric emergency, and adult emergency medicine, giving her a unique and comprehensive perspective on patient care.

Known for her commitment to preventative health, Larissa works closely with each family to create customized care plans that support long-term wellness. Her approach is rooted in building meaningful relationships, where children feel safe and parents feel heard and supported.

Outside of her clinical work, Larissa lives the healthy lifestyle she encourages in others. She enjoys spending quality time with her family, two young children and their beloved French Bulldog, Coco Chanel.

Director of Family Care & Co-Owner

Courtney Salazar is the Director of Family Care and Co-Owner of Care On Call Pediatrics. With a background in Public Relations and Marketing from Colorado State University and a Master’s in Education from Johns Hopkins University, Courtney brings a unique blend of communication, education, and strategic insight to the heart of pediatric healthcare.

She is deeply passionate about health, wellness, and patient-centered care, and is committed to helping families become the healthiest versions of themselves. As a mom of two young children, Courtney understands firsthand the importance of compassionate, convenient care and works to ensure every family feels seen, supported, and empowered.

Courtney is also deeply rooted in the local community and loves partnering with like-minded businesses and organizations to make a lasting impact. Whether she’s volunteering, planning family-friendly events, or cheering on her kids from the sidelines, her heart is always centered around service and connection.