Our Staff

At Meadville Pediatrics, we consider it both a great joy and responsibility to care for children. Most of us are parents ourselves, so we strive to be understanding and available to the families we are privileged to serve. We are honored that you have chosen us as your child's primary medical provider and are confident that you will be pleased with the quality of care and service that we can provide you and your family.Meet our team at Meadville Pediatrics!

Please take a few moments to learn about our skilled practitioners and our friendly, nurturing staff.

Our Doctors

Timothy Downing, MD, FAAP

"Dr. Tim"

Tim was born and raised in Erie, PA and is an alumnus of Cathedral Prep High School.  He received his Bachelor's Degree in Biology at Gannon.  He then completed his Medical Degree at the University of Pittsburgh School of Medicine in 1980.  Tim completed his residency at Children's Hospital of Pittsburgh in 1983.  He is board certified in Pediatrics from the American Academy of Pediatrics.

Dr. Downing joined the staff of Meadville Medical Center in July 1983 when he and his wife, Judy, moved to Meadville.

Dr. Tim has 3 beautiful daughters and 5 wonderful grandchildren, all residing in the Pittsburgh area.  He enjoys frequent visits with them.  He is also an avid Pittsburgh sports fan.

Raymond Leung, MD, FAAP

"Dr. Ray"

Raymond was born and raised in China.  He attended the University of Hong Kong and received his medical degree in 1982.  He worked at Hammersmith Hospital in London, UK in 1988.  He worked in Hong Kong for 10 years before moving to the United States.  He then did a residency program at the Children's Hospital of Buffalo from 1992 to 1995, when he joined Meadville Pediatrics.   He is board certified in Pediatrics from the American Academy of Pediatrics.

Dr Leung is fluent in Chinese and English.  He enjoys spending time with his wife and 4 boys during his time off.

Lisa Conrad, DO, FAAP

"Dr. Lisa"

Lisa is a graduate of Colorado State University and received a Bachelor of Science degree in Sports Medicine.  She received her medical degree from Des Moines University's College of Osteopathic Medicine.  She completed her pediatric residency at Geisinger Medical Center.  She has been practicing pediatrics in the Meadville area since 2002.  She is board certified in Pediatrics from the American Academy of Pediatrics.

Dr. Conrad enjoys spending time with her husband and three boys snow-skiing, water-skiing and working out.

Nicholas Mulhearn, DO, FAAP

"Dr. Nick"

Nick was born and raised in Lilly, PA – a small farming and former coal mining town.  He completed his undergraduate degree at Virginia Tech and received a B.S. degree in Electrical Engineering.  Nick then attended Philadelphia College of Osteopathic Medicine for Medical School.  He completed his residency at Charleston Area Medical Center in Charleston, WV.

Nick is married and has 2 wonderful children.  In his spare time he enjoys all types of outdoor activities and sports.  He is an avid Pittsburgh sports fan.

Marjorie Severo-Stewart, CRNP 



Margie is a Pediatric Nurse Practitioner.  She graduated with a Bachelor's of Science in Nursing from Mansfield Univeristy of Pennsylvania and was licensed as a Registered Nurse in 1995.  She got her Master of Science degree from Syracuse University in 1996 while in their Pediatric Nurse Practitioner program. Margie has been on staff with Meadville Pediatrics since 2005.

When she is not at the office, Margie enjoys camping and spending time with her husband and three daughters.

Stacey Pittner, PA-C 



Stacey was born and raised in Conneaut Lake, PA.  She graduated from Duquesne University in 2012 with a Masters in Physician Assistant Studies.  Stacey has been on staff with Meadville Pediatrics since 2015.

When not at the office, Stacey enjoys spending time outside with her husband, Greg and their son, Cole as well as their two dogs.

Adrien Ennis, DO

"Dr. Adrien"

Dr. Ennis

Preston May, DO

"Dr. Preston"

Dr. May

Our Staff

A vital part of our service to children begins with our outstanding staff who works hard to manage and maintain a professional, caring and supportive environment for our patients in a timely manner. Our doctors are lifelong learners. Not only have they received advanced medical training in pediatrics, they continually pursue ongoing education to stay abreast of the latest in child health care.

Your child's health is as important to us as it is to you.

We look forward to providing you with the excellent medical care your child deserves.

Our Location

Find us on the map

Hours of Operation

Our Winter/Spring Schedule

By Appointment Only


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


Temporarily Suspended due to Coronavirus Precautions




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