Learn More About Dr. Kostur

Meet our team at Jacksonville Kids Pediatrics! Please take a few moments to learn about our skilled practitioner and our friendly, nurturing staff.

At Jacksonville Kids Pediatrics, we consider it both a great joy and responsibility to care for children. Most of us are parents ourselves, so we strive to be understanding and available to the families we are privileged to serve. We are honored that you have chosen us as your child's primary medical provider and are confident that you will be pleased with the quality of care and service that we can provide you and your family.

A vital part of our service to children begins with our outstanding staff who works hard to manage and maintain a professional, caring and supportive environment for our patients in a timely manner. Our doctor is a lifelong learner. Not only has she received advanced medical training in pediatrics, she continually pursues ongoing education to stay abreast of the latest in child health care.

Your child's health is as important to us as it is to you. We look forward to providing you with excellent medical care your child deserves.

Alexandra Kostur
Pediatrician in Jacksonville, FL

Dr. Kostur is a board-certified pediatrician with over a decade of pediatric experience in general office pediatrics and emergency pediatrics.  Dr. Kostur is a fellow of the American Academy of Pediatrics and completed her pediatric residency in 2003 at one of the nation's top-ranked children's hospitals, Cincinnati Children's Hospital Medical Center. 

She has several years of experience working as a pediatrician in one of the busiest children's emergency rooms in the country and at a well-respected private pediatric practice.  Dr. Kostur earned her M.D. from Loyola University of Chicago in 2000 and completed undergraduate studies at Northwestern University in Evanston, IL.  Dr. Kostur is affiliated with and an active staff member at Baptist Hospital, Wolfson's Children's Hospital, and Baptist South Medical Center. 

In 2008, after relocating from Cincinnati, Dr. Kostur started her own practice - Jacksonville Kids Pediatrics.   Dr. Kostur resides in Jacksonville with her husband, Dr. Michael Petr, and their two children, Michael, age 16, and Eva, age 13.

Dr. Kostur emphasizes the importance of keeping her patients safe and healthy.  She is a strong advocate for public education on pediatric healthcare topics and the prevention of childhood injuries.  Dr. Alex has been a featured television guest on several Jacksonville local TV news stations.  Her appearances include Blue Cross Blue Shield's  Gloria Steinberg, host of 'Medical Update' discussing the important topic of pediatric obesity.   Dr. Kostur's recent media appearances also include several interviews discussing choking hazards, hot dog safety, as well as Halloween Safety and infant CPR on the Channel 4 and Channel 47 morning shows. Dr. Kostur's recently published an editorial on newborn care posted on the premiere edition of Jacksonville's Expectant Mother's Guide.

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Hours of Operation

Our Regular Schedule

Map and Location


8:45 am-5:15 pm


8:45 am-5:15 pm


8:45 am-5:15 pm


8:45 am-5:15 pm


8:45 am-5:15 pm


10:00 am-2:00 pm