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Leadership team

Committed to providing real and lasting improvements in the lives of patients, today and well into the future.

Dr. Ryan
Michael Ryan, DO

Michael Ryan, DO, is chair of the Geisinger Women and Children’s Institute. He is a pediatrician specializing in pediatric infectious diseases.

Dr. Ryan received his medical degree from Kansas City University of Medicine and Biosciences. He completed pediatric residencies at Springfield Hospital and Geisinger, and a fellowship in pediatric infectious diseases at St. Jude’s Children’s Research Center.
He is board certified in pediatric infectious diseases and general pediatrics by the American Board of Pediatrics and the American Osteopathic Board of Pediatrics. He is a member of the American College of Osteopathic Pediatricians, the American Osteopathic Association and the Pennsylvania Osteopathic Medical Association.

Clinical Interests
Dr. Ryan’s areas of special interest include HIV, recurrent infections, immunodeficiency and meningitis, as well as pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS).

“I began my career at Geisinger as a medical student and returned as a pediatric resident. After my fellowship in pediatric infectious diseases, I joined the staff at Geisinger in 1980. Since that time, I have been fortunate to care for countless patients and their families throughout this region. I have been able to work with wonderful colleagues to continuously improve the overall health of our children. I have also been gratified to serve in various leadership positions that have resulted in expanding our medical staff and transforming the way care is delivered at Geisinger.”
Dr. Maffei

Frank A. Maffei, MD 

Frank A. Maffei, MD, is the chair of Pediatrics for the Geisinger Women and Children’s Institute.

Dr. Maffei received his medical degree from the Albert Einstein College of Medicine at Yeshiva University in New York and graduated with Alpha Omega Alpha honors.

He completed his residency, chief residency and a fellowship in pediatric emergency medicine at Children’s Hospital of Pittsburgh. He completed a second fellowship in pediatric critical care at Golisano Children’s Hospital at the University of Rochester. He was the University of Rochester Medical School Lowell A. Glasgow Dean’s Teaching Fellow in 2003, and has been the recipient of numerous teaching awards.

He is certified by the American Board of Pediatrics in pediatric critical care medicine and pediatric emergency medicine. Dr. Maffei has published and presented extensively in clinically relevant areas of both disciplines, including life-threatening asthma, meningitis, child abuse and overwhelming infections.

Clinical interests
Dr. Maffei’s areas of clinical interest include central nervous system infections, traumatic brain injury, asphyxial asthma, sepsis and bioethics.
Dr. Culbertson

Sandra Culbertson, MD 

Sandra Culbertson, MD, is chair of Women’s Health for the Geisinger Women and Children’s Institute. She and her team lead women’s health services across Geisinger, including obstetrics and gynecology, maternal-fetal medicine, gynecologic oncology, urogynecology and reproductive endocrinology.

Dr. Culbertson received her undergraduate and medical degrees from the University of Virginia and completed her residency in obstetrics and gynecology and gynecology surgery at The University of Chicago.

Prior to joining Geisinger in 2017, Dr. Culbertson practiced at The University of Chicago for more than 20 years, where her focus was on excellence in clinical care, education and administration. She was a professor of obstetrics and gynecology at the Pritzker School of Medicine and was awarded the Council on Resident Education in Obstetrics and Gynecology resident teaching award several times. She served as the residency program director from 1998 to 2002.

She also held many administrative roles during her tenure at The University of Chicago, including vice chair of the Department of Obstetrics and Gynecology, development and leadership of the Committee on Professionalism and president of the medical staff.

Clinical interests
Dr. Culbertson is a board-certified urogynecologist and focuses on treatment of recurrent urinary incontinence and prolapse.

“I came to Geisinger because I wanted to be part of a mature healthcare system that was patient-focused and well-equipped to address new challenges in healthcare delivery. The Women and Children’s Institute lives up to the ideals of forward thinking and patient-centered care, and it has been a pleasure to join this team.”
Dr. Bringman

Jay Bringman, MD

Jay Bringman, MD, is the vice chair of Women’s Health for the Geisinger Women and Children’s Institute. He is a maternal-fetal medicine specialist.  

Dr. Bringman received his medical degree from the West Virginia University School of Medicine. He completed a residency in obstetrics and gynecology at Saint Barnabas Medical Center in 2002 and a fellowship in maternal-fetal medicine at the University of Tennessee in 2005.

He has won several teaching awards and directed the residency research program at the University of Tennessee. Dr. Bringman is currently the codirector of both the Center for Prenatal Pediatrics and the Perinatal Palliative Care Program at the Geisinger Women and Children’s Institute.

He is board certified in obstetrics and gynecology, as well as in maternal-fetal medicine.

Clinical interests
Dr. Bringman’s areas of clinical interest include complications of pregnancy and childbirth, and diabetes in pregnancy. Among the procedures he performs are amniocentesis and chorionic villus sampling.

“Being at Geisinger allows me to be a part of a truly forward-thinking health system. The Women’s Health service line is committed to providing the highest quality of care for our patients.”