Call 717-291-7221

Meet our team at Red Rose Pediatrics! Please take a few moments to learn about our skilled practitioners and our friendly, nurturing staff.

At Red Rose 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.

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 excellent pediatric care in the Lancaster area.


William Martens II, MD

Dr. Martens is originally from New Haven, CT.  He graduated from Dickinson College, PA, and then went on to medical school at Albany Medical College, NY.  He completed his residency training at Children's Mercy Hospital ,Kansas City, MO, and is board certified in pediatrics.  He is a member of the American Academy of Pediatrics.  His special interests include treatment of children with endocrine disorders and ADHD.
After many years of fulltime work, Dr. Martens is semi-retired and therefore sees patients on a limited schedule.  When out of the office, he enjoys spending time with his wife, Patricia, and their five grown children and lots of grandchildren.  He also relaxes by getting regular exercise on the golf course and tennis court.

Dr. Martens and his wife enjoy traveling and participating in medical mission trips that provide surgery for children born with cleft lips and palates.  These travels have taken them to remote areas of Peru, Venezuela and China and have deepened their appreciation for the need of good healthcare for everyone.


Melissa Tribuzio, MD
Dr. Tribuzio was raised in Fairfax, VA.  She went to college at the University of Richmond and earned her medical degree from the Medical College of Virginia.  She completed her residency training at Dartmouth-Hitchcock Medical Center and is board certified in pediatrics.  She is a member of the American Academy of Pediatrics.
Dr. Tribuzio's special interests in pediatrics include caring for children with asthma, ADHD and mood disorders, as well as providing breastfeeding education and support.  She particularly enjoys working at RRP due to its family friendly atmosphere that encompasses both the employees and the patients.  She hopes that our patients always feel like a part of the RRP family and never like a "number."

Dr. Tribuzio is married and has two children, a son and a daughter.  Her interests outside the office include gardening, photography, traveling and chocolate! You can follow her on Twitter @DrMTribuzio.


Lora Mangus, MD
Dr. Mangus grew up in a large family in northern Indiana.  She moved to Pennsylvania in 2008 when she joined RRP.  She completed her undergraduate degree at Manchester College and followed up with her medical school and pediatric residency training at Indiana University in Indiana.  Prior to moving to Lancaster, she worked for eight years in a community heath center while fulfilling a scholarship commitment to the National Health Service Corps.
Dr. Mangus is board certified in pediatrics.  She enjoys caring for an ethnically diverse population  and getting to know the families of the patients she serves.  She has a special interest in the needs of children who are adopted and/or who have experienced foster care.  She is a member of the American Academy of Pediatrics.

Dr. Mangus is married and has two daughters.  She enjoys spending time with her family, traveling, hiking, reading and participating in church activities.


Margaret Reiley, DO
Dr. Reiley was born in Maryland but has lived in Pennsylvania her entire life.  She received her college degree from Wilkes College and medical school degree from Philadelphia College of Osteopathic Medicine.  She completed her residency training program at Geisinger Medical Center and is board certified in pediatrics.  She is a member of the American Academy of Pediatrics.
Dr. Reiley believes that parenthood is the most difficult and the most rewarding job that one can ever have.  She enjoys being a part of the lives of families as they grow from crib to college and offering them support and encouragement along the way.  She has additional special interests in newborn feeding issues and breastfeeding concerns and support.

Dr. Reiley has two children, Daniel and Rachael, who keep her very busy.  She and her family enjoy traveling and especially spending time at the beach.  She also enjoys listening to music and going to the theatre.




View map and directions to our locations and office hours.

Red Rose Pediatric Associates
233 College Ave, Suite 200
Lancaster, PA 17603

Find Us

Same day appointments!

Click Here

An online resource center providing you with additional helpful information.