Dr. Harry Ostrer

Jennifer Posey is a Medical Genetics specialist and a Pediatrics provider in New York, New York. Dr. Posey is rated as a Distinguished provider by MediFind in the treatment of Intersex. Her top areas of expertise are Hypotonia, Achalasia Microcephaly Syndrome, Microcephaly, and Cortical Dysplasia.

John Pappas is a Medical Genetics specialist and a Pediatrics provider in New York, New York. Dr. Pappas is rated as an Advanced provider by MediFind in the treatment of Intersex. His top areas of expertise are Cortical Dysplasia, Microcephaly, Achalasia Microcephaly Syndrome, and CHARGE Syndrome.

Dr. Ian Daniel Krantz, MD, is a renowned physician specializing in Genetics and Pediatrics. He currently sees patients at Cohen Children's Medical Center (CCMC) and Northwell Health Physician Partners Medical Genetics. Dr. Krantz holds certifications in Clinical Genetics, Cytogenetics, and Pediatrics from the American Board of Medical Genetics and the American Board of Pediatrics, respectively.Dr. Krantz completed his BFA at Concordia University in Montreal and his MD at Sackler School of Medicine (Tel Aviv University). He completed his residency in Medical Genetics at Children's Hospital of Philadelphia and his residency in Pediatrics at New York University Medical Center.With an impressive set of academic and administrative titles, Dr. Krantz serves as the Division Chief of Pediatric Genetics and Genomics at Cohen Children's Medical Center and is the System Vice President for Pediatric Genetics at Northwell Health. Additionally, he holds the position of Professor at the Zucker School of Medicine at Northwell Health.Dr. Krantz is recognized for his clinical expertise in isolated and syndromic forms of congenital birth differences and developmental diagnoses, including syndromic and non-syndromic autism. He has a special interest in the genetics of hearing loss and focused expertise in Cornelia de Lange Syndrome, Pallister-Killian syndrome, Alagille syndrome, CHOPS syndrome, among others.Dr. Krantz's research is dedicated to identifying and characterizing the molecular etiology of syndromic and non-syndromic developmental diagnoses. His research lab has made significant contributions in the field, discovering new disease genes and shedding light on critical molecular pathways involved in human developmental disorders.Driven by his commitment to advancing patient care, Dr. Krantz has been at the forefront of integrating genomic technologies into the clinical setting. He has implemented rapid genome sequencing into the NICU and CICU and established biobanks and biorepositories to further research efforts. Through his work, he aims to understand the impact of complex diagnostic information on clinicians and families involved.With his extensive expertise and dedication to advancing genetic research and patient care, Dr. Krantz continues to make significant contributions to the field of Pediatrics and Genetics. Dr. Krantz is rated as a Distinguished provider by MediFind in the treatment of Intersex. His top areas of expertise are Cornelia De Lange Syndrome, Pallister-Killian Mosaic Syndrome, Mosaicism, and KBG Syndrome.