About Our Team PDF Print E-mail

Meridian Pediatrics is proud of our team of compassionate, caring professionals. Our physicians are excellent doctors who also offer a warm, caring bedside manner.

Dr. Keith Chitty

Keith Chitty, M.D.

Dr. Chitty is originally from Canada but moved to Indianapolis during high school and feels like an official Hoosier. He completed residency training and was Chief Resident at Indiana University/Riley Hospital for Children, and for the last 10 years he has practiced as a Pediatric Hospitalist at Riley Hospital for Children at IU Health North Hospital in Carmel. Dr. Chitty is Board Certified in Pediatrics. He is married and has three daughters, and he is very excited to join the team at Meridian Pediatrics. Residence phone number: 317-758-7908.


Scott V. Riddell, M.D.

Dr. Riddell is from Indianapolis and is a graduate of Purdue University. He received his doctorate in medicine from Indiana University in 1987. He completed his pediatric training and was chief resident at Riley Children’s Hospital. He is board certified in pediatrics. He is married and has 3 children. Residence phone number: 317-733-8931.

Sarah Hill, M.D.

Sarah Hill, M.D.

Dr. Hill is from Virginia and is a graduate of the University of Virginia.  She received her doctorate in medicine at the University of Cincinnati in 1999.  She completed a pediatric residency and was Chief Resident at Riley Hospital/Indiana University.  She is board certified in pediatrics.  She is married and has 2 boys and an energetic German shorthair Pointer.  Residence number:  317-721-9611


Stephanie A. Bergstein, M.D.

Dr. Bergstein is from Indianapolis, and is a graduate of Indiana University. She completed her doctorate in medicine at Indiana University in 1992. Her pediatric residency was completed at Riley Children’s Hospital. She is board certified in pediatrics. She has 2 children. Residence phone number: 317-824-0205.


James G. Cumming, D.O.

Dr. Cumming is from Indianapolis and is a graduate of Indiana University. He completed his doctorate in medicine at Chicago College of Osteopathic Medicine in 2000. His pediatric residency was completed at Riley Children’s Hospital in 2003. He is married and has 3 children. Residence phone number: 317-843-9615.


Jill S. Mazurek, M.D.

Dr. Mazurek is from Bloomington, Indiana and is a graduate of Vanderbilt University. She received her doctorate in medicine at Indiana University in 1991. She completed her pediatric residency and was chief resident at The Children’s Memorial Hospital Northwestern University. She is board certified in pediatrics. She is married and has 3 children.  Residence phone number: 317-706-0534.

Leah Corinne (Cory) Martinson, M.D.

Dr. Martinson is from Indianapolis, and is a graduate of Bucknell University. She completed her doctorate in medicine at the University of Chicago, Pritzker School of Medicine in 2005. Her pediatric residency was completed at Boston Children's Hospital (Harvard affiliate). She spent the first part of her career in pediatrics working as a pediatric hospitalist at Boston Children's Hospital before making the move to primary care. She is board certified in pediatrics. She is married and has 3 children and a sweet labrador. Residence phone number: 317-536-5112.