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Pediatric Residency Program Leadership

Walter D. Rosenfeld, MD
Chairman, Department of Pediatrics,
Goryeb Children’s Hospital
Morristown Medical Center
and Overlook Medical Center

Dr. Walter Rosenfeld, a specialist in adolescent medicine, is the chair of pediatrics at Goryeb Children’s Hospital. Dr. Rosenfeld received a BS degree from the University of Wisconsin and then earned his MD degree from Temple University School of Medicine. He completed a residency in pediatrics at Babies Hospital of Columbia University College of Physicians and Surgeons and a fellowship in adolescent medicine at Children’s Hospital Boston of Harvard University.

After spending a year on the faculty at Children’s Hospital, he moved to the Albert Einstein College of Medicine/Montefiore Medical Center in Bronx, NY, working for the next 11 years in the Division of Adolescent Medicine as the director of adolescent ambulatory services. His research, publications, and public speaking have encompassed multiple areas of adolescent health, with particular emphasis on adolescent sexuality, risk-taking behaviors, eating disorders and obesity, substance abuse, ethical issues in research with adolescents, teens and the Internet, importance of effective communication with teens and parents, and the connections between physiologic disorders and psychosocial issues.

Dr. Rosenfeld is a past president of the North American Society for Pediatric and Adolescent Gynecology and the former director of programs for the Society for Adolescent Medicine. He previously served on the editorial board of “Adolescent Health Update,” and is an editor of the “Textbook of Adolescent Health Care,” both published by the American Academy of Pediatrics. Dr. Rosenfeld’s commitment to the pediatric residency is evident through his direct role in teaching, as well as his support of resident research and faculty development.

Alan J. Meltzer, MD
Director, Pediatric Residency Program

Dr. Alan Meltzer is the director of general pediatrics and pediatric program director at Goryeb Children’s Hospital. He received his undergraduate degree at the State University of New York (SUNY) at Buffalo and earned his MD degree at the State University of New York – Downstate Medical Center,  Brooklyn, NY. He completed his pediatric training at North Shore University Hospital,  Manhasset, NY, and a Primary Care Faculty Development Fellowship at Michigan State University, where he researched the use of complementary medicine in patients with HIV infection.

Dr. Meltzer has practiced general pediatrics in New Jersey for the past 28 years. He was director of the Pediatric Ambulatory and Primary Care Training Program at Newark Beth Israel Medical Center until 1998. He subsequently established the Division of General Pediatrics and hospitalist program at Atlantic Health System, was named associate program director in 2000, and accepted the role of program director in 2004. Additionally, he continues to practice general pediatric primary care at Madison Pediatrics, a private practice of Atlantic Medical Group in Morristown, NJ. Dr. Meltzer represented District 3 of the New Jersey Chapter of the  American Academy of Pediatrics, Dr. Meltzer remains a member of the executive council, government affairs committee and editorial board of NJ Pediatrics. A self-proclaimed life-long "resident," Dr. Meltzer has received several educator awards and has devoted his career to training future pediatricians.



Maria Perez, DO
Associate Director, Pediatric Residency Program

Dr. Maria E. Perez earned her undergraduate degree in biology and psychology  from Drew University in Madison, New Jersey and then earned her DO degree at the University of Medicine and Dentistry of NJ-School of Osteopathic Medicine (now Rowan University School of Medicine). She completed her residency in pediatrics at Goryeb Children’s Hospital and her fellowship in pediatric  gastroenterology at Nationwide Children’s Hospital in Columbus, Ohio. Afterward, she returned to NJ to join the Division of Pediatric Gastroenterology and Nutrition at Goryeb Children’s Hospital.

Believing in the importance of clinical research, Dr. Perez has been involved in several studies involving functional gastroenterology, GI issues in  adolescents  and the effects of nutritional rehabilitation on gastric motility, somatic complaints, and anxiety in pediatric patients with anorexia.Dr. Perez has written many scholarly articles on the subject of pediatric gastroenterology, including chronic abdominal pain and functional (non-ulcer) dyspepsia in children and adolescents. She also wrote and edited a self-management handbook for  pediatric patients with inflammatory bowel disease, which was later converted to an interactive online program for the North American Society of Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN). More recently,  she  published a review of the gastrointestinal manifestations of eating disorders for  the American Academy of Pediatric’s (AAP) Adolescent Medicine: State of the Art Reviews.

In addition to her busy clinical practice, Dr. Perez places significant emphasis on community service and education. Each year, she organizes a Hospital Day for the 8th grade students in the NJ Scholars, Educators, Excellence, Dedication, Success (SEEDS) program. She also teaches a class about the role of diet in  gastrointestinal conditions for graduate students studying nutrition at Columbia University in New York and has given multiple lectures to trainees, nurses and the community. In her role with NASPGHAN, she served on the Training Committee and helped develop a review book for the pediatric GI board exam. Dr. Perez previously served as chairwoman of the National Pediatric Gastroenterology Fellows Committee, where she is now a member of their Professional Education
Committee. At Goryeb Children’s Hospital, Dr. Perez helped develop and currently serves as chairwoman for the Goryeb Academic Pediatrics Support (GAPS) Committee – an effort dedicated to encourage and support academic culture and research curriculum for residents. With a personal interest in resident wellness, Dr. Perez has formalized our resident wellness curriculum this year with monthly training sessions in addition to off-site social activities.

Dr. Perez accepted the position of associate program director of the Pediatric Residency Program in 2015, and has since become an active member of the  Association of Pediatric Program Directors (APPD), where she serves on their research and scholarly activity interest group.


Tyree Winters, DO
Associate Director, Pediatic Residency Program
Medical Director, HealthStart Program

Dr. Tyree Winters is an osteopathic physician and board certified pediatrician with extensive clinical experience in pediatric weight management. He joined Atlantic Health System in October 2017 as the associate program director of Goryeb Children’s Hospital’s pediatric residency program, and medical student clerkship director and director of Overlook Medical Center’s HealthStart Clinic. Additionally, Dr. Winters practices general pediatric primary care at Essex-Morris Pediatrics. He previously held the positions of director of pediatric health and weight management/community pediatrics at Children’s Hospital of New Jersey in Newark, NJ and clinical lead physician for the Nationwide Children's Hospital (NCH) Primary Care Obesity Initiative/Primary Care Obesity Network in Columbus, Ohio.

Dr. Winters serves as the workforce lead analyst for PolicyPrescriptions.org, an evidence-based health policy website, and several of his writings have been referenced by national publications, including “The Hill.” He is also an associate editor for the eJournal of the American College of Osteopathic Pediatricians.