Jennifer L. Kloesz, MD, FAAP

Director, Division of Newborn Medicine
Professor of Pediatrics

Jennifer L. Kloesz is a Professor of Pediatrics at the University of Pittsburgh School of Medicine and the Director of the Division of Newborn Medicine.

Kloesz earned a Bachelor of Science degree from the University of Toledo and received her M.D. degree from The Ohio State University College of Medicine. She completed her residency in Pediatrics and a fellowship in Neonatal-Perinatal Medicine at the University of Pittsburgh. She has been a faculty member in the Division of Newborn Medicine since 2004.

Kloesz has been actively involved in medical education and hospital administration throughout her career. She served as Associate Program Director and Program Director of the Neonatal-Perinatal Medicine Fellowship Program for 17 years and participated in several committees for the Pediatric Residency Program. Dr. Kloesz also supervised the clinical care provided in the UPMC Magee-Womens Hospital NICU as the Medical Director from 2009 to 2021. Her scholarly interests include infant nutrition and the use of human milk in the NICU.

Professional and Scientific Society Memberships

American Academy of Pediatrics, 1995-Present
- Perinatal Section, 2005-Present
- Fellow, 2005-Present

Education & Training

BS, Biology, University of Toledo, 1991
MD, The Ohio State University College of Medicine, 1995
Internship/Residency in Pediatrics, University of Pittsburgh Medical Center, 1995-1998
Fellowship in Neonatal/Perinatal Medicine, University of Pittsburgh Medical Center, 1998-2001

Selected Publications

Yanowitz T, Mahmood Z, O’Donnell B, Brozanski B, Vats K, Kloesz J, Jackson L, Shenk J, Miller M, Pasqualicchio M, Schmidt H, Azzuqa A. A quality improvement initiative standardizing the antibiotic treatment and feeding practices in patients with medical necrotizing enterocolitis. Accepted for publication, J Perinatol. 2023.

Bowen A, Wiesenfeld HC, Kloesz JL, Pasculle AW, Nowalk AJ, Brink L, Elliot E, Martin H, Tarr CL. Notes from the field: Cronobacter sakazakii infection associated with feeding extrinsically contaminated expressed human milk to a premature infant — Pennsylvania, 2016. MMWR Morb Mortal Wkly Rep. 2017 Jul 21;66(28):761-762. PMID: 28727679

Kloesz JL, Serdikoff CM, MacLennan NK, Adibi SA, Lane RH. Uteroplacental insufficiency alters liver and skeletal muscle branched-chain amino acid metabolism in intrauterine growth-restricted fetal rats. Pediatr Res. 2001 Nov;50(5):604-10. PMID: 11641455.

Lane RH, Ramirez RJ, Tsirka AE, Kloesz JL, McLaughlin MK, Gruetzmacher EM, Devaskar SU. Uteroplacental insufficiency lowers the threshold towards hypoxia-induced cerebral apoptosis in growth-retarded fetal rats. Brain Res. 2001 Mar 23;895(1-2):186-93. PMID: 11259777.

Full Publication List via NIH PubMed »