Pediatrics Team in Perry Hall

Learn more about our Team


Tia Ragland Medley, MD, FAAP

Medical Director

Dr. Medley is a board-certified pediatrician who graduated from the George Washington University School of Medicine in Washington D.C. She completed her residency at the University of Maryland Medical System where she served as Chief Pediatric Resident for two years. Dr. Medley is a member of the American Academy of Pediatricians and a recipient of numerous honors and awards. She is passionate about volunteering and educating the community.


Harsha Bhagtani, MD, FAAP

After attending medical school at Penn State University, Dr. Bhagtani completed her pediatrics residency at Thomas Jefferson University and Al duPont Hospital for Children. She is board certified in pediatrics. Her interests are in early childhood literacy and asthma education. As part of these, she coordinates the Reach Out and Read Program and Asthma Fair.


Stephanie Hemm, MD, FAAP

Dr. Hemm received her medical degree from the Indiana University School of Medicine and completed her pediatric residency at the Children’s National Medical Center in Washington, D.C. Dr. Hemm is a board certified pediatrician whose special interests include first-time parents, breastfeeding, early childhood development, and the patient-centered medical home.


Barbara Howard, MD, FAAP

A general pediatrician and subspecialist board certified in developmental-behavioral pediatrics, Dr. Howard received a medical doctorate from The Johns Hopkins University School of Medicine and her pediatric training at Boston's Children's Medical Center where she had fellowship training in child development. She is co-director of the Center for Promotion of Child Development through Primary Care.


Ari Silver-Isenstadt, MD, FAAP

Dr. Silver-Isenstadt received his medical and education degrees from the University of Pennsylvania and completed his pediatric training at the University of Maryland. Board certified in pediatrics he has special interests in medical education, medical ethics and universal coverage for health.


Raymond Sturner, MD, FAAP

Board certified in developmental-behavioral pediatrics and general pediatrics, Dr. Sturner received fellowship training in developmental-behavioral pediatrics at Yale University. He is an associate professor of Pediatrics at The Johns Hopkins University School of Medicine and co-director of the Center for Promotion of Child Development through Primary Care. Dr. Sturner was previously the director of the Child Development Unit at Duke University.


Caren Williams, CRNP

Caren Williams is a board certified Pediatric Nurse Practitioner.  She received her Bachelor of Science, Master of Science and Pediatric Nurse Practitioner degrees at Johns Hopkins University School of Nursing. She also holds a Bachelor’s Degree in Biology from the University of Maryland.  Mrs. Williams has extensive clinical experience in pediatric primary care. She is an active member of the National Association of Pediatric Nurse Practitioners and has interests in nutrition and promoting immunizations. 


Amanda M. Singh, CRNP, RN, BSN, BSc

Mrs. Singh is a nurse practitioner specializing in pediatric medicine. She is a graduate of the Johns Hopkins School of Nursing where she obtained her Bachelor of Science, Master of Science and Pediatric Nurse Practitioner degrees. Mrs. Singh has extensive clinical experience in treating pediatric cases both in the United States and internationally. Mrs. Singh also holds a Bachelor of Science in Psychology from Utah Valley University, a certification as an Emergency Medical Technician and has experience and interest in adolescent medicine and domestic violence.

Jessica Nooralian, MD

Jessica Nooralian, MD, earned her medical degree at the University of Maryland School of Medicine, and completed a pediatrics residency program at the  University of Maryland Medical Center. Throughout her training, Dr. Nooralian led and contributed to numerous medical research efforts in the Baltimore area. Most recently, she served as the lead researcher  for a study initiated by MedStar Franklin Square Medical Center, focused on how the Baby Friendly Initiative impacts full-term, healthy infants.  Dr. Nooralian is certified in Pediatric Advanced Life Support and Neonatal Resuscitation by the American Heart Association and the American Academy of Pediatrics. She is a member of the American Academy of Pediatrics and the American Medical Association. 


Contact Information

Phone: 443-725-2100

Fax: 443-725-2121

Complete a pre-visit questionnaire before you arrive. 

MedStar Franklin Square Pediatrics
5009 Honeygo Center Drive
Suite 225
Perry Hall, Maryland 21128 


Office Hours

Monday - Thursday, 9 a.m. - 7 p.m.
(Last patient accepted at 6:30 p.m.)

Friday, 9 a.m. - 4 p.m
(Scheduled Appointments)

Monday - Friday, 8:30 a.m. - 9 a.m.
(Walk-in acute visits only)

After-hours pediatric consults are available when the office is closed. Call 443-725-2100 and a pediatrician will return your call.

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