Meet our Healthy Kids bloggers

To provide you with the timely, credible, in-depth resource you need to raise a healthy family, we have been growing our panel of bloggers to include pediatric experts from around the Philadelphia region. Here is a quick look at our regular contributors, beginning with the editor. Stayed tuned for even more.

Anna Nguyen

Anna Nguyen, the Healthy Kids blog editor, is a health freelance writer and was a former reporter at the Courier Post and Burlington County Times in South Jersey. She has written about various health topics for publications and Websites, including the Philadelphia Inquirer and WebMD, and health-related research for Temple University, University Communications. She has a master's degree in health journalism from the University of Minnesota. Her two energetic girls - ages 6 and 4 - keep Nguyen busy on her toes.

Sarah Allen

Sarah Levin Allen, Ph.D., CBIS is Assistant Professor of Psychology at the Philadelphia College of Osteopathic Medicine and the Executive Director of Neuropsychology at the Brain Behavior Bridge. She also directs the Neuro-behavioral Intervention and Prevention (n-BIP) initiative at PCOM. Dr. Allen is a licensed neuropsychologist, a Certified Brain Injury Specialist, and a New Jersey Certified School Psychologist. She specializes in making brain based research accessible and useable to families and schools. Her research and training focus has been in the area of evidence-based interventions for schools as well as in school-wide concussion management and recovery programming. Dr. Allen’s primary interest and expertise is in building brain-based skills through interventions that combine neuropsychology with clinical and behavioral approaches. In her practice and scholarly work, Dr. Allen focuses on bridging the gap between neuropsychology and behavioral sciences by promoting child-centered assessment and programming consultation. She lives outside of Philadelphia with her husband and 2 young children, who are a constant source of inspiration.

Peter Bidey

Peter Bidey, D.O., is medical director of family medicine at Philadelphia College of Osteopathic Medicine. He also is clinical instructor of family medicine, precepting fourth-year medical students and rotating interns at PCOM’s City Ave. Community Health Care Center. He received his B.S. in biology from Duquesne University in Pittsburgh and his D.O. from PCOM. He is board certified in family practice and osteopathic manipulative treatment from the American College of Osteopathic Physicians.

Christopher C. Chang

Christopher C. Chang, M.D., Ph.D. received his medical degree from the Georgetown University Medical School. He completed an internship and residency in pediatrics at Children's Hospital of Los Angeles and a fellowship in allergy and immunology at the University of California at Davis. He has a particular interest in food and environmental allergies and bone immunology. Formerly, he was Professor of Pediatrics at Thomas Jefferson University, and currently he is a Clinical Professor of Medicine in the Division of Rheumatology, Allergy and Clinical Immunology at the University of California at Davis.

Katherine K. Dahlsgaard

Katherine K. Dahlsgaard, Ph.D., is lead psychologist at the Anxiety Behaviors Clinic at the Department of Child and Adolescent Psychiatry and Behavioral Sciences at the Children's Hospital of Philadelphia. She is a licensed clinical psychologist in Pennsylvania and New York with expertise in cognitive-behavioral therapy for children, adolescents, and young adults. She specializes in the evaluation and treatment of anxiety disorders, particularly selective mutism, social anxiety disorder, obsessive-compulsive disorder, and phobias. Dr. Dahlsgaard also frequently treats children with problems that commonly present with anxiety, such as difficulty sleeping alone and food selectivity.

A recipient of a National Science Foundation Fellowship award, Dr. Dahlsgaard is a frequent lecturer and guest speaker and has published widely in scientific journals and books on the topics of child development, psychopathology, mental health, and human virtue. She was formerly Assistant Professor of Psychology at the Chestnut Hill College School of Professional Psychology and has taught undergraduate and graduate level courses on human development, child psychopathology, and cognitive-behavioral interventions. At CHOP, she trains the psychiatry fellows in cognitive-behavioral techniques and supervises their CBT cases.

Magee DeFelice

Magee DeFelice, MD is Division Chief of Allergy and Immunology at Nemours/Alfred I. duPont Hospital for Children and Director of the Allergy and Immunology Fellowship Program at the Sidney Kimmel Medical College of Thomas Jefferson University. Dr. DeFelice earned her medical degree from the Sidney Kimmel Medical College and completed her residency in pediatrics and fellowship in allergy and immunology at Nemours/Alfred I. duPont Hospital for Children and Sidney Kimmel Medical College. Dr. DeFelice is board certified in allergy and immunology and in pediatrics. She is a member of the Primary Immune Deficiency Diseases Committee and the Core Curriculum, Education & Residency Review Subcommittee of the American Academy of Allergy, Asthma and Immunology. Prior to beginning medical school, Dr. DeFelice conducted translational research in gastrointestinal immunology at the Children’s Hospital of Philadelphia.  She has published numerous articles in peer-reviewed journals and her academic interests include immune dysfunction, food allergy, stinging insect allergy, and anaphylaxis.

Rachel DeHaven

Rachel DeHaven, an Exercise Physiologist at the Children’s Hospital of Philadelphia, has worked in obesity treatment as a Physical Activity Specialist within the Healthy Weight Program for the past 5 years. As a clinician in outpatient weight management she works with children ranging from 2 – 18 years of age where she performs exercise testing, prescriptions and goal setting in individual sessions as well as group sessions. She earned her degree in Exercise Physiology from Oral Roberts University and spent 5 years working for a preventative medicine company working with adults before moving to pediatrics. Her passion has always been children and helping children to develop healthy lifestyles at a young age. In addition to her clinical duties she is also the Community Outreach Coordinator within the Healthy Weight Program. Here she helps develop partnerships with local nonprofits relating to childhood wellness in the Philadelphia community and runs a healthy kids running series through CHOP in West Philadelphia twice a year.

Gary A. Emmett

 Gary A. Emmett,  M.D., F.A.A.P., has been a primary care pediatrician in South Philadelphia and Center City since 1979. He is currently an attending pediatrician at Nemours Pediatrics, Philadelphia and director of hospital pediatrics at Thomas Jefferson University Hospital. Dr. Emmett has taught at Jefferson since he graduated from the medical college in 1976 and his pediatric residency in 1979 and is currently a professor of pediatrics at Jefferson Medical College of Thomas Jefferson University. He has been president of the Philadelphia Pediatric Society and is on the board of Pennsylvania Asthma Partnership and many professional organizations. He is a promoter of better health care for children with asthma and is one of the sponsors of the annual Asthma Disparities Conference in West Philadelphia. Dr. Emmett has written many research articles, book chapters and a textbook for the hospital well-baby nursery, called Field Guide to the Normal Newborn. He is married to Marianne Ruby, a gynecologist, and has four adult children, one grandchild and several more on the way. He has lived in Center City Philadelphia for four decades.

Hazel Guinto-Ocampo

Hazel Guinto-Ocampo, M.D., is the chief of pediatric emergency services at Bryn Mawr Hospital, and has 18 years of experience in the field of pediatric emergency medicine. She is board certified in pediatrics and pediatric emergency medicine and is a fellow of the American Academy of Pediatrics. Guinto received her medical degree from the University of the Philippines and completed her residency and fellowship in pediatrics at the Albert Einstein College of Medicine in Bronx, N.Y. Previously, she served as the director of the Pediatric Emergency Department at Temple University Children’s Medical Center and as a member of the pediatric emergency medicine faculty at Nemours/Alfred I. duPont Hospital for Children. She has authored chapters in pediatric emergency medicine textbooks and is a regular speaker in national and regional pediatric emergency medicine conferences. Guinto has three children.

Rima Himelstein

Rima Himelstein, M.D., is a Crozer-Keystone Health System pediatrician and adolescent medicine specialist. Dr. Himelstein earned her medical degree from the University of Pennsylvania and completed her residency and fellowship at Mount Sinai Hospital in New York. She is board-certified in adolescent medicine. In addition to seeing patients at Crozer-Chester Medical Center, Dr. Himelstein is one of the founders of Crozer-Keystone’s “Tots to Teens” program, which focuses on gynecologic health for teen and preteen girls. She also operates a school-based health center within the Chester Upland School District in Chester and has been involved with Crozer-Keystone’s award-winning Wellness Center program, which oversees a range of youth development programs within the district. She has been named a “top doc” by Philadelphia magazine several times.

Jessica Kendorski

Jessica Glass Kendorski, PhD, NCSP, BCBA-D, is an Associate Professor and Director of the MS program in School Psychology/Applied Behavior Analysis at the Philadelphia College of Osteopathic Medicine (PCOM). She is a licensed psychologist in Pennsylvania, and maintains certifications as a Board Certified Behavior Analyst (BCBA) and School Psychologist nationally (NCSP) and in New Jersey. Dr. Kendorski specializes in supporting the emotional, social, and behavioral needs of children in home and school settings. In addition, Dr. Kendorski actively works with school districts to improve systems through the reform of school and district-wide academic and behavioral policies and practices. An appreciative mom of two, she is passionate about child advocacy, education, and positive parenting practices.

Anita Kulick

Anita Kulick is President & CEO of Educating Communities for Parenting and a founding member of the Pennsylvania Parenting Coalition. Ms. Kulick has worked in the field of education and parenting for over 40 years; starting out as a Philadelphia public school teacher and for the last 15 years developing and implementing specialized programs and services for highly at-risk children, adolescents, and adults; including those who are parenting, adjudicated delinquent, in foster care, and parents living with their children in homeless and substance recovery residences.

Ms. Kulick has a B.S. in Education from Pennsylvania State University, a M.A. in Education from Arcadia University, is an IFP Certified Parenting Facilitator and a Certified Trauma-Competent Family Professional. Ms. Kulick also has Certificate from the Drexel University Goodwin College of Professional Studies in Positive Psychology. Ms. Kulick is an advocate for children, youth, and families throughout the Region and serves on a variety of boards commissions. Follow Anita's personal blog here.

Megan Robinson

Megan Robinson, MS, RD, CDE, LDN, a registered dietitian at the Children’s Hospital of Philadelphia, has more than twenty years of experience in providing nutrition care for adolescents and children, specializing in diabetes, heart health, and sports nutrition. She earned her degree in dietetics from the University of Vermont, and completed a masters degree in exercise physiology from West Chester University. Megan has worked as a nutrition expert with Disney Type 1 Diabetes Every Day Magic website and has published articles in peer-reviewed journals on topics such as double diabetes and managing Type 1 Diabetes and hyperlipidemia. Megan currently serves on the Academy of Nutrition and Dietetics Evidence Analysis Library workgroup and is a reviewer for the Diabetes Care and Education and the Sports, Cardiovascular and Wellness Dietetic Practice groups.

Janet Rosenzweig

Janet Rosenzweig, MS, PhD, MPA, is the Vice President for Programs and Research for Prevent Child Abuse America, and is a lecturer at the University of Pennsylvania in Philadelphia. Dr. Rosenzweig managed public and non-profit child welfare programs in Tennessee, Texas, New Jersey and Pennsylvania including serving as the Mercer County, NJ Director of Human Services for 9 years. 

She drew on her experiences as a sex educator working with child abuse prevention to write The Sex-Wise Parent: The Parent's Guide Protecting Your Child, Strengthening Your Family, and Talking to Kids about Sex, Abuse, and Bullying, (Skyhorse Publishing, 2012). She presents workshops to parent and professional groups promoting the ideal that parents must be the primary sex educators of their children, learning how to support sexual health and safety in the home, school and community.

An alumnus of The Pennsylvania State University, she has returned multiple times to conduct workshops on promoting sexual health and safety for faculty, staff, students and families and is featured in the University's required on-line training program in sexual abuse prevention.

Emiliano Tatar

Dr. Tatar has lived in Philadelphia for the past 20 years. He received a BS in biology from Temple University and his MD from Drexel University. He completed his residency in Pediatrics at St. Christopher's Hospital for Children. After a short stay at Children's Hospital of Philadelphia, he worked at practices in Northwest and Northeast Philly. Currently, he is working for Einstein in Roxborough. He lives with his wife and two young children in suburban Philadelphia.

Jeanette Trella

Dr. Jeanette Trella is the Managing Director at The Poison Control Center at The Children’s Hospital of Philadelphia. She received her Doctor of Pharmacy degree at the James L. Winkle School of Pharmacy at the University of Cincinnati and completed pharmacy practice residency at The Children’s Hospital of Philadelphia where she also practiced as a Clinical Pharmacy Specialist in General Pediatrics from 2007-2012.

Dr. Trella is an Adjunct Assistant Professor at Wilkes University and serves as a preceptor for the Philadelphia-Area Collaboration of Toxicologists (PACT). She is an active participant on the hospital’s Adverse Drug Reaction, Drug Utilization Evaluation, Formulary Review, and Therapeutic Standards Committees and is a member of the American Association of Poison Control Centers (AAPCC), American Academy of Clinical Toxicology (AACT), American College of Clinical Pharmacy (ACCP), and the Pediatric Pharmacy Advocacy Group (PPAG). She is a reviewer for American Journal of Health System Pharmacists, Journal of Pediatric Pharmacology and Therapeutics, and the Journal of Clinical Toxicology. Dr. Trella’ s areas of practice and research interest include patient family education, pediatric pharmacokinetics/ toxicokinetics, medication safety, and change management.

Dr. Trella will be contributing to the Health Kids Blog along with other esteemed colleagues at the Poison Control Center: Dr. Kevin Osterhoudt, Medical Director, Dr. Fred Henretig, Associate Medical Director, and the Center’s Specialist in Poison Information.

W. Douglas Tynan

W. Douglas Tynan, Ph.D., currently serves as the Director of Integrated Health Care for the American Psychological Association in Washington DC. and is a Professor of Pediatrics at Jefferson Medical College. A graduate of Boston University, Dr. Tynan earned his master’s degree in psychology at the University of Connecticut and his Ph.D. at Binghamton University. He is a licensed psychologist in Delaware and Pennsylvania, and past President of the American Academy of Health Psychology. He served on the Committee for the Evaluation of Head Start 2003-2007. He is the Co-Editor of Clinical Practice in Pediatric Psychology, and one of the co-authors of the recent APA book on Gun Violence: Prediction, Prevention and Policy.

Flaura Koplin Winston

Flaura Koplin Winston, MD, PhD is the scientific director of the Children’s Hospital of Philadelphia’s Center for Injury Research and Prevention. She is a board-certified pediatrician, a doctorally-trained engineer and a public health researcher who conducts research at the interface of child and adolescent health, injury, engineering and behavioral science. Dr. Winston’s work is published in peer-reviewed journals and conference proceedings and focuses on the area of traffic injury. Her research to action to impact approach and pragmatic rigor has led to patents and a focus on evidence-based mobile health (mHealth) for better health. She is a professor of pediatrics at the University of Pennsylvania in Philadelphia and serves as the Scientific Director of the Center for Injury Research and Prevention at The Children’s Hospital of Philadelphia, Director of the Center for Child Injury Prevention Studies (CChIPS), a National Science Foundation Industry/University Cooperative Research Center, and Director of a National Science Foundation Research Experience for Undergraduates site

Dr. Winston currently serves as an Associate Editor of Injury Prevention, has served on multiple US federal study sections, committees and advisory panels and held executive committee positions with the American Academy of Pediatrics and the Secretariat for the International Society for Child and Adolescent Injury Prevention. A sample of award-winning, evidence-based websites that highlight her work are:, and