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Leyuan Ma, PhD

Leyuan Ma

Dr. Ma focuses on immune engineering. He leverages genetic, chemistry, and engineering tools to dissect immune cell-cell and cell-tissue crosstalk and harness these crosstalk mechanisms to develop biomaterials, protein, and cell-based precision immunotherapies for cancer and autoimmune diseases.

Lisa MacDowell, MBA, CPA, CIA

Lisa MacDowell

Advances the Research Institute’s commitment to the development of shared resources that facilitate interdisciplinary research through numerous Core facilities that service both laboratory and clinical research programs.

Suzanne P. MacFarland, MD

Suzanne P. MacFarland Headshot

Dr. MacFarland's research focuses on syndromes that predispose to cancer development in children and adolescents. She has initiated several individual and collaborative research projects, working in pediatric polyposis syndromes and Li-Fraumeni syndrome. She is uncovering novel genomic drivers of disease and identifying biomarkers of cancer onset and progression.

Ana Maria Manrique Espinel, MD

Ana Maria Manrique Espinel

Dr. Manirque Espinel is an attending anesthesiologist in the Division of Cardiothoracic Anesthesiology at CHOP and a professor of Clinical Anesthesiology and Critical Care at the Perelman School of Medicine of the University of Pennsylvania. Her research focuses on pediatric anesthesiology.

Amirreza Manteghinejad, MD

Amirreza Manteghinejad

Dr. Amirreza Manteghinejad is a research assistant with an interest in neuroradiology.

Paris Margaritis, DPhil

Paris Margaritis

Dr. Margaritis uses biochemical, molecular, and complex in vivo methodology within the field of coagulation to advance the understanding of molecular mechanisms involved in pro- and anti-coagulant reactions, and translate research for the treatment of coagulation defects.

John M. Maris, MD

John M. Maris

Dr. Maris investigates the molecular and genetic mechanisms contributing to the development and progression of neuroblastoma, a common childhood cancer. He also aims to develop new molecular diagnostic tests and less toxic, targeted therapies to treat relapsed or refractory neuroblastoma, including a major effort in immunotherapy discovery and development.

Michael S. Marks, PhD

Michael S. Marks

Dr. Marks investigates the molecular mechanisms underlying the formation of cell type-specific lysosome-related organelles; the assembly, delivery and function of their contents; and how these processes are impacted by genetic diseases.

Eric D. Marsh, MD, PhD

Eric D. Marsh

Dr. Marsh's research program focuses on understanding how changes in brain development lead to epilepsy, intellectual disability, and autism. He combines molecular and physiological tools in mouse models to ask questions about the interaction of normal development with single gene mutations to determine how the brain responds to perturbations in development.

Santiago Martinez Correa, MD

Santiago Martinez Correa

Dr. Martinez Correa is a research assistant whose focus is neonatal imaging.

Maria R. Mascarenhas, MBBS

Maria R. Mascarenhas

Dr. Mascarenhas is director of the Nutrition Support Service, section chief of nutrition in the Division of Gastroenterology and Nutrition, medical director of the Clinical Nutrition Department, and director of the Integrative Health Program. Her research interests involve 22q deletion syndrome, cystic fibrosis, nutrition, and integrative medicine.

Shavonne L. Massey, MD, MSCE

Shavonne L. Massey

Dr. Massey's research focuses on epilepsy, diagnosis and management of seizures in high risk neonatal populations, and EEG biomarker development

James Massey, RN, BSN, MBA

James Massey, RN, BSN, MBA

James Massey provides operational oversight of the Pediatrics Research Consortium (PeRC), including administrative and financial planning for future research projects that use the practice-based research network.

Christina L. Master, MD, FAAP, CAQSM, FACSM

Christina L. Master

Dr. Master studies pediatric and adolescent concussions and identifies interventions that improve time to recovery and clinical outcomes. In particular, she is interested in visual and vestibular problems that occur after concussion that may contribute to persisting prolonged symptomatology and impaired function and the role they play as targets for active intervention.

Stephen R. Master, MD, PhD

Stephen R. Master

Dr. Master works to understand the biochemical pathways related to inborn errors of metabolism, particularly as they relate to mitochondrial function. He also focuses on bioinformatics and machine learning solutions to problems in mass spectrometry and laboratory medicine.

Peter Mattei, MD

Peter Mattei

Dr. Mattei is an attending physician in the Division of General, Thoracic and Fetal Surgery and specializes in pediatric surgical oncology, inflammatory bowel disease, and minimally invasive and robotic surgery. His research interests are in oncology and IBD.

Shannon L. Maude, MD, PhD

Shannon L. Maude

Dr. Maude focuses on novel therapies for high-risk and relapsed pediatric acute lymphoblastic leukemia (ALL). She aims to identify new pediatric ALL treatments that are more effective, less toxic, and exhibit fewer side effects than existing cancer therapies.

Jennifer A. Mautone, PhD

Jennifer A. Mautone

Dr. Mautone's research focuses on assessment and treatment of attention-deficit/hyperactivity disorder. She has expertise in family-school-health system collaboration, classroom consultation, and integrated behavioral health in primary care settings. She has a special interest in increasing access to high-quality, culturally competent care for underserved children and families.

Oscar H. Mayer, DO

Oscar H. Mayer

Dr. Mayer's research interests center on chronic respiratory failure, the pulmonary manifestations of neuromuscular disease, and assessing and managing patients with complex chest wall and spine disease.

Stephanie L. Mayne, PhD, MHS

Stephanie L. Mayne

Dr. Mayne is an epidemiologist whose research focuses on preventing cardiovascular disease and promoting healthy behaviors in children and their families. She employs multilevel and longitudinal methods to study how factors at the individual, family, neighborhood, and policy level influence risk factor behaviors and cardiometabolic outcomes. She is also engaged in research to promote innovation in pediatric primary care.

Shana E. McCormack, MD, MTR

Shana E. McCormack

Dr. McCormack investigates the intersection of neuroendocrinology and metabolism. Her translational research program involves two areas. The first involves studying those with genetic disorders, including primary mitochondrial diseases and Friedreich's ataxia, with characterized risk for diabetes mellitus. Second, Dr. McCormack focuses on brain disorders associated with excess weight gain, including brain tumor-related hypothalamic obesity syndrome and idiopathic intracranial hypertension.

Denisa McDonald, PhD

Denisa McDonald

Denisa McDonald, PhD is a postdoctoral fellow in computer vision at the Center for Autism Research.

Catherine C. McDonald, PhD, RN, FAAN

Catherine C. McDonald

Dr. McDonald is a pediatric nurse scientist building a focused program of research aimed at promoting health and reducing injury in youth.

Valerie McGoldrick, RN, BSN

Valerie McGoldrick

As the research nurse coordinator at PeRC, McGoldrick understands each of the Kid’s First and Primary Care Centers’ individual operating practices and their needs in contributing to research initiatives as a part of the PeRC team.

Sharon McGrath-Morrow, MBA, MD

Sharon A. McGrath-Morrow

Dr. McGrath-Morrow is associate chief of the Division of Pulmonary and Sleep Medicine and leader of the Post-preemie Lung Disease Clinic at Children’s Hospital of Philadelphia. Her research seeks to link early life events with adult lung health and biomarker discovery for future trials.

Kristin J. McKenna, MD, MPH

Kristin J. McKenna, MD, MPH

Dr. McKenna has an interest in congenital renal and genitourinary anomalies, acute kidney injury and chronic renal insufficiency in the neonate.

Shemeika McLaren, BA

Shemeika McLaren

Shemeika McLaren is dedicated to community health and works as a program resource coordinator for the Mitchell Lab.

Patrick McMahon, MD

Patrick McMahon

Dr. McMahon is a pediatric dermatologist and healthcare innovator whose research focuses on telemedicine, specifically teledermatology.

Paulette McRae, PhD

Paulette McRae

Dr. McRae is Associate Director of Specialty Programs and Diversity in the Office of Academic Training and Outreach Programs. She works to enhance and support CHOP’s growing population of diverse scientists by developing relevant programming and creating an inclusive and welcoming environment for researchers from all backgrounds.

Michael T. McWay, MD

Michael T. McWay

Dr. Michael McWay is an attending physician in the Emergency Department at Children’s Hospital of Philadelphia, and an assistant professor of Clinical Pediatrics in the Perelman School of Medicine at the University of Pennsylvania. His research focuses on emergency point-of-care ultrasound.

Jay Mehta, MD, MS

Photo of Jay Mehta

Dr. Mehta serves as Program Director, Pediatric Rheumatology Fellowship at Children's Hospital of Philadelphia.

Yadel Mekete, BS

Yadel Mekete

Yadel Mekete is a resource coordinator for the Clinical Research Core and Program Coordinator for Global Outreach and Education.

Denise M. Melvin, MSM, RBP

Denise M. Melvin

Oversees three departments committed to the health and safety of Research Institute staff and serves as the Institutional Biosafety Officer.

Jamie Merves, MD

Jamie Merves

Dr. Merves has a background in basic and clinical translational research in eosinophilic esophagitis. Her more recent focus is clinical research in the pediatric short-bowel population. Dr. Merves is currently evaluating blenderized feeding in the pediatric short bowel population.

Kevin E. C. Meyers, MBBCh

Kevin E. C. Meyers, MBBCh

Dr. Meyers' research addresses ways to help improve outcomes in children with nephrotic syndrome and hypertension.

Madeline D. Miano, MD

Madeline D. Miano

Dr. Madelilne Miano is an attending anesthesiologist at Children's Hospital of Philadelphia, and assistant professor of Clinical Anesthesiology and Critical Care at the Perelman School of Medicine of the University of Pennsylvania. Her research focuses on pediatric anesthesiology.

Hermon Miliard Derbew, MD

Hermon Miliard Derbew

Dr. Miliard Derbew is a radiologist from Ethiopia, who is currently a Global Outreach and Education Research Fellow in the Department of Radiology.

Victoria A. Miller, PhD

Victoria A. Miller

Dr. Miller conducts developmentally informed behavioral research to examine the impact of parent-youth communication and decision making on health-related behaviors and outcomes. She aims to conduct research that facilitates youth involvement and empowerment in health-related decision making and enhances parent-youth-provider relationships.

Judith S. Miller, PhD, MS

Judith S. Miller

Dr. Miller's research focuses on diagnostic and outcome issues, including differentiating autism from other genetic and psychiatric conditions, diagnostic and outcome studies across the lifespan, early identification and screening, and improving systems of care.