Our Medical Team

Dr. Ables (3)Dr. Lynn M. Ables has been practicing pediatrics since 1988 and joined the Wheaton Pediatrics team in 2003. She attended Northwestern University Medical School after receiving a degree in Biology with honors at the University of Illinois. Dr. Ables completed her residency at the Children’s Memorial Hospital in Chicago and continued to work in the emergency room there and in the neonatal unit at Evanston Hospital. She then became a Commissioned Officer in the U.S. Public Health Service, working as the pediatrician on the Hopi Indian Reservation. After volunteering in India and Mexico for two years, Dr. Ables returned to the Chicago area and joined Loyola University as an Assistant Professor of Pediatrics. During that time, she taught medical students, practiced clinical medicine, and also worked in the Sexually Transmitted Disease Clinic at the DuPage County Health Department. Dr. Ables’ professional interests include newborns, breastfeeding, child development and behavior, adolescent medicine, dermatology, infectious diseases and international medicine. She is a board-certified pediatrician, a fellow of the American Academy of Pediatrics and is fluent in Spanish. Dr. Ables lives in Winfield with her family. She has five children, including two sets of twins. She enjoys swimming, biking, camping, gardening and collecting fossils with her children.

Dr. HarenburgDr. William C. Harenburg joined the physician team at Wheaton Pediatrics in 2008. Dr. Harenburg spent his childhood in Bolingbrook, Illinois, but lived in southern California in his teens. He graduated summa cum laude with college honors, with a degree in Cell and Molecular Biology, from UCLA in 1997. After relocating to Chicago, he completed his master’s work in Developmental Biology and received an M.S. in Molecular Genetics and Cell Biology from the University of Chicago in 2003. After receiving his M.D. from the Pritzker School of Medicine at the University of Chicago in 2005, Dr. Harenburg completed his residency training at Comer Children’s Hospital at the University of Chicago Medical Center, and in 2008 was named Senior Resident of the Year. Dr. Harenburg is also on staff at Central DuPage Hospital and Lurie Children’s Hospital. He lives in Lisle with his wife, and in his free time, he enjoys spending time with his daughter, movies, and jigsaw puzzles.

Dr. LiberDr. Peter I. Liber has been practicing pediatrics since he founded Wheaton Pediatrics in 1987. A native of Gary, Indiana, Dr. Liber earned his Biology degree, with honors, at the University of Chicago. He received his M.D. from Indiana University in 1984, and completed his residency at Children’s Memorial Hospital in Chicago in 1987. He is an instructor in Pediatrics in the Northwestern University Feinberg School of Medicine, who also speaks Ukrainian and welcomes the opportunity to care for Ukrainian-speaking patients. His other professional interests include caring for children with asthma, ADHD and internationally adopted children and their families, for whom he can offer pre-adoption counseling. He has traveled to Guatemala and volunteered with Timmy Global Health, an organization that helps deliver medical care to underserved communities. Dr. Liber is board certified in pediatrics and a fellow of the American Academy of Pediatrics. In 2008, 2010, 2012 and 2014, Chicago Magazine names Dr. Liber to its prestigious list of “Top Docs” – the only DuPage County pediatrician on the list. He has been active in the Lurie Children’s Hospital Medical Staff leadership for several years. In December 2017, Dr. Liber completed his two-year tenure as President of Lurie Children’s Hospital Medical Staff. Dr. Liber lives in Wheaton with his wife. They have been married more than 30 years and have raised 4 children, now young adults, pursuing careers of their own. Dr. Liber enjoys jogging, recreational cycling, vacationing with family and walking his dog, Charlie Brown.

Dr. RucobaDr. Ruben J. Rucoba has been practicing pediatrics since 1992, and has been at Wheaton Pediatrics since 1999. A native of the south suburbs of Chicago, Dr. Rucoba attended Loyola University of Chicago, where he earned his degree B.A. with honors in English. He received his M.D. from the University
of California, San Francisco, and completed his residency at Children’s Memorial Hospital in Chicago, now Lurie Children’s Hospital. Prior to working at Wheaton Pediatrics, Dr. Rucoba worked at a community health center in Chicago and at Children’s Memorial Hospital (Lurie Children’s Hospital), where he was a faculty member of the Department of Pediatrics, teaching medical students and residents. He is still an Instructor in Pediatrics in the Northwestern University Feinberg School of Medicine. In December 2016, Dr. Rucoba became the Medical Director of Wheaton Pediatrics. He will continue to see his patients with special healthcare needs for well care, while tending to the Practices administrative needs. Dr. Rucoba is board certified in pediatrics, and a fellow of the American Academy of Pediatrics. Dr. Rucoba is also a medical writer who has written for the AAP, continuing medical education companies, and various health websites. He lives in Wheaton with his wife and four children (including twins), and enjoys reading, golf, biking and playing chess.

Dr. MonsonDr. Ute L. Monson has been practicing pediatrics since 1995 and began working at Wheaton Pediatrics in 1998.  Born and raised in La Jolla, California, she was valedictorian of her high school class and earned her degree in Biochemistry at the University of California, San Diego, graduating with highest honors.  During her college years, she maintained a part-time research position in a biochemistry lab at the Scripps Clinic and Research Institute in La Jolla.  Dr. Monson received her M.D. from Harvard Medical School in Boston, Massachusetts, and completed her pediatric residency at Children’s Hospital and Medical Center in Seattle, Washington, in 1995.  She spent two years working as a primary care pediatrician in Seattle before moving to Wheaton Pediatrics.  Her professional interests include child behavior and development, patient/parent education, pediatric food allergies and preventative medicine.  Dr. Monson speaks German fluently and likes working with German speaking families.  She is board certified in pediatrics and is a fellow of the American Academy of Pediatrics.  Dr. Monson lives in Wheaton with her husband and two sons. In her free time enjoys music, photography, baking, entertaining, needlework, and evenings spent walking to downtown Wheaton with family and friends for ice cream or coffee.

Dr. ZubairDr. Sabrina H. Zubair joined the Wheaton Pediatrics team in 2007. She graduated with a degree in Biology with honors from the University of Alabama at Birmingham. After receiving her M.D. from the University of South Alabama in Mobile, Dr. Zubair completed her residency training at Lutheran General Hospital in Park Ridge, Illinois. Before joining Wheaton Pediatrics, Dr. Zubair was in pediatrics practice for two years with the University of Massachusetts system. Dr. Zubair is certified by the American Board of Pediatrics and is a fellow of the American Academy of Pediatrics. She also is on staff at Central DuPage Hospital and Lurie Children’s Hospital. She lives in Naperville with her husband and three children. Her interests include reading, traveling and spending time with family.

Dr. GrunenwaldDr. Christienne M. Grunenwald began practicing pediatrics in 1994 at Wheaton Pediatrics. A native of the western suburbs, she attended Miami University in Ohio where she earned a B.A. in Zoology. She received her MD degree from University of Cincinnati College of Medicine and completed her residency at Children’s Memorial Hospital in Chicago. After working at Wheaton Pediatrics for 10 years, Dr. Grunenwald took time off to be a full time mother to her four children. She returned to Wheaton Pediatrics in 2016. She is certified by the American Board of Pediatrics and is a fellow of the American Academy of Pediatrics. Dr. Grunenwald has lived in Wheaton for over 20 years. Outside of work she enjoys bike riding, playing the piano and taking long walks on the beach in Michigan.

Nurse Practitioners

Wheaton Pediatrics employs two expert health care providers who deliver a unique blend of nursing and medical care. These Pediatric Nurse Practitioners (PNPs) are registered nurses with graduate academic degrees and advanced pediatric clinical experience. This enables them to diagnose and manage most pediatric illnesses, either independently or as part of a health care team. The PNP model focuses on the whole person, not just the illness. PNPs are often able to spend more time with families and children, providing high-quality medical care and health counseling.

Vanda Marsh, NPVanda Marsh has worked in pediatrics for more than 30 years and has been affiliated with Wheaton Pediatrics since it was founded in 1987. Vanda graduated summa cum laude from St. Francis Hospital School of Nursing, and graduated with a degree in Nursing from Northern Illinois University. In 2000, she completed her master’s in Nursing and Advanced Practice Pediatrics Nurse Practitioner at the University of Illinois at Chicago. Shortly thereafter, she was inducted into the Sigma Theta Tau Honor Society of Nursing. She is an adjunct faculty member of the University of Illinois and an asthma educator certified by the National Asthma Education Certification Board. For nearly two decades, in conjunction with her work at Wheaton Pediatrics, Vanda worked in emergency medicine at Children’s Memorial Hospital. Since 2006, Vanda has routinely traveled to Haiti with Little by Little, a non-profit of Glenview, Illinois, which provides medical care to people in need around a rural town called Gramothe.

Vanda’s special professional interests include asthma treatment and education and Attention Deficit Disorders. Vanda is certified by the Pediatric Nursing Certification Board and a fellow of the National Association of Pediatric Nurse Practitioners. In September of 2012, Vanda was presented with the Outstanding Alumni Excellence in Leadership Award from St. Francis College of Nursing. She was also presented with the Outstanding Preceptor Award by the University of Illinois, in April 2016. She has lived in Wheaton with her husband and three daughters for more than 30 years. She enjoys reading, baking, visiting her grandchildren, traveling with her husband, and participating in church activities.

Cathy Moroni, NP (1)Catherine Moroni joined Wheaton Pediatrics in 2003. Cathy was born in Ohio, but raised in Ohio, Connecticut, Illinois and Indiana. She graduated from the University of Dayton, in Ohio, with a degree in Psychology and obtained her Master’s in Nursing and completed the Pediatric Advanced Nurse Practitioner program at the University of Illinois at Chicago in 2003. She is a member of the Sigma Theta Tau Honor Society of Nursing. Cathy is an adjunct faculty member of the University of Illinois College of Nursing. She is board certified by the Pediatric Nursing Certification Board and a fellow of the National Association of Pediatric Nurse Practitioners. Prior to Wheaton Pediatrics, Cathy worked at Children’s Memorial Hospital in the Intensive Care Unit and Specialty Ambulatory Clinics. Her clinical interests include asthma, skin care, developmental pediatrics and providing support for families of children with chronic health conditions. A resident of River Forest, Cathy is married, has four children and four granddaughters, a cat and a dog. She enjoys spending time with her family, gardening, reading and bike riding.