About Our Practice

At All Better Pediatric Group, 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 doctors are lifelong learners. Not only have they received advanced medical training in pediatrics, they continually pursue 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.

Dr. Renato Berger

Dr. Renato Berger, founder and Chief Medical Officer of All Better Pediatric Group, received his Medical Doctorate and completed his Pediatric Residency at Universidade Federal Fluminense in Rio de Janeiro, Brazil. He continued his education, pursuing a Pediatric Pulmonology Fellowship at Universidade Federal do Rio de Janeiro, in Brazil. Moving to the United States with his wife and two daughters, Dr. Berger passed his US Pediatric Boards and completed his US Pediatric Residency at Crozer Chester Medical Center, a program affiliated with the Children’s Hospital of Philadelphia, PA. He achieved his Master of Science in Health Service Administration at Nova Southern University in Davie, Florida, as well. Dr. Berger has 7 published papers, and is fluent in English, Portuguese and Spanish. He is a Diplomate of the American Board of Pediatrics and a Fellow of the American Academy of Pediatrics. Practicing pediatrics for the past 20 years, Dr. Berger has a passion for patient/family centered care - where a strong partnership between family, child and staff is emphasized from day one. To kick back and relax, Dr. Berger loves spending time with his family and boating.


Dr. Diana Guinazu 

 Dr. Diana Guinana was born in Mendoza, Argentina, and received her Doctor of Medicine degree at University of Cuyo in Mendonza, Argentina. She earned her Bachelor's degree in science, at Padre Claret College, in Mendoza, Argentina. In order to gain her license here in the United States, Dr. Diana Guinazu, passed the american boards and did her residence here in the United States at the Driscoll Children's Hospital in Corpus Christi, Texas and a fellowship in Pediatric Infectious Diseases at University of Florida, Jacksonville, FL. 

Dr. Diana Guinazu is a member of the American Academy of Pediatrics the Infectious Diseases Society, European Society for Pediatric Infectious Disease and Argentine Society of Pediatrics. Dr. Diana Guinazu loves to work with children and their parents, and has a special medical interest in immunizations, antibiotics resistance, preventive medicine and congenital infections. Dr. Diana Guinazu speaks English and Spanish. Dr. Diana Guinazu is married to Edward Markuza an electrical mechanical engineer. To kick back and relax Dr. Diana Guinazu enjoys opera, yoga and to travel. 


Dr. Amy Krostich

Amy Krostich, DNP, CPNP, (Dr. Amy) is a Pediatric Nurse Practitioner at All Better Pediatric Group. She received her Master of Science in Nursing and Doctor of Nursing Practice at Case Western Reserve University in Cleveland, Ohio in the Pediatric Nurse Practitioner Program in 2003 and 2004. She earned her Bachelors degree in Biology and Health and Society at the University of Rochester in Rochester, New York in 1998. She is board certified with the Pediatric Nursing Certification Board and is a fellow of the National Association of Pediatric Nurse Practitioners. She began her nursing career in Cleveland, Ohio and moved with her family to South Florida in 2009. Since her doctoral thesis “Parental Satisfaction with Provider Communication in Well Child Care”, she has been passionate about working collaboratively with parents and children to meet their developmental as well as social and emotional needs. Dr. Amy is passionate about breastfeeding promotion, child development and mental health. She views her role as a partner with the children and parents she serves to deliver high quality care. She enjoys spending time with her husband Seth and 3 children Adam, Julia, and Max outdoors in nature or the beach and daily family meals. In her personal time Dr. Amy enjoys running, yoga, and gardening.


Soraia Berger

Soraia Berger is the Marketing and Quality Assurance Director at all Better Pediatric Group. She graduated in Computer Science from Pontificia Universidade Catolica do Rio De Janeiro,in Brazil and received her Master’s in Business Administration with a concentration in Marketing from the same university. Soraia’s Master Degree Thesis focused on proving: that in order to deliver high quality services in the Health Care Industry, there is a need to fully understand patients’ expectations. Prior to joining All Better Pediatric Group, she worked for 22 years in the Telecommunications and Information Technology Industry. Her roles included: Product Marketing Manager, Information Technology Director and Senior Software Engineer while at Unisys Corporation, University of Pennsylvania, Convergys Corporation and Hoteis Otton chain. Soraia’s passion is to deliver high quality service at all levels - service that will always exceed patient and family expectations. She speaks English and Portuguese. She loves baking and cooking with her two daughters, and traveling with her family.


We are very lucky and grateful to count on Dr. Duque, MD to help us with coverage when our full time providers are away on vacation or for any other business or personal matters. Please see her bios below:

Dr. John Duque

Bio coming soon


 Our Staff