Our Staff
Always ready to help.Providers:
Jeffrey C. Jennings, MD, PhD, FAAP
Dr. Jennings grew up in New Jersey and he lived there until graduating from Princeton University, studying Molecular Biology and the Ethics of Emerging Genetic Technologies. He received his MD from Albert Einstein in New York and a PhD in Ethics from Georgetown University. He came to Connecticut to do his pediatric residency training at Yale, and has stayed on ever since. He joined Pediatric Medicine of Wallingford in 2000. His clinical interests include asthma and concussion management and medical ethics.
Dr. Jennings is the proud father of twins. When time allows, they are avid hikers and the family loves to travel. He enjoys music and theater, skiing and board games.
Allison J. Beitel, MD, FAAP
Dr. Beitel is a real local. Growing up in Cheshire and going to college at Yale, she finally stepped outside the Nutmeg State to attend Cornell Medical School in New York. She completed her pediatric residency at Cornell and moved on to do a fellowship in Emergency Medicine at Boston Children’s Hospital. She returned to join Pediatric Medicine of Wallingford in 2004. She has broad medical interests, although lately she has been particularly focused on picky eating behaviors in children.
Dr. Beitel has 3 girls and one dog. She enjoys tennis and ballroom dancing, winning the local Quinnipiac University “Dancing with the Stars” charity event on two occasions. Whenever she has a quiet moment, she continues her own relentless pursuit of the Great American Novel.
Michelle Popoli, APRN
Michelle is a lifelong native of Connecticut. She graduated with her Bachelor of Science degree in Nursing and her Doctor of Nursing Practice degree from Quinnipiac University. She is credentialed as a Family Nurse Practitioner by the American Academy of Nurse Practitioners. Michelle has worked in pediatric primary care since graduation from nurse practitioner school. Prior to practicing as an APRN, she worked at Yale New Haven Hospital caring for well newborns and their mothers during the peripartum period. She is also a Certified Lactation Counselor with over 10 years of lactation experience. Michelle enjoys hiking and traveling with her husband and daughter and they also keep busy caring for their 2 dogs and 2 cats.
Sarah Baum, MD, FAAP
Dr. Sarah Baum is a native of Providence, Rhode Island and a graduate of Barnard College and the Warren Alpert Medical School of Brown University. She did her pediatric residency at Yale University and has stayed in Connecticut since then, practicing primary care pediatrics in a multitude of settings.
She is the proud mother of 3 young adults, two of whom are twins.
Outside of medicine her interests are walking, dancing, art museums and cats!
She is looking forward to joining Wallingford Pediatrics and welcomes both new and old patients!
Sarah Kilian, APRN
Sarah is originally from Orange, Connecticut. She earned her Bachelor of Science in Nursing from the University of Connecticut and six years of experience in pediatric care, having worked at both Connecticut Children’s Medical Center and Yale New Haven Hospital. During this time, she specialized in pediatric hematology and oncology, developing a strong foundation in compassionate, family-centered care.
Sarah went on to earn her Master of Science in Nursing from Southern Connecticut State University and is board certified as a Family Nurse Practitioner. Outside of work, Sarah enjoys baking and spending quality time with her family and friends.
The Practice Staff:
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