About
Dr. Meredith Irwin, MD, is a board-certified general pediatrician and the founder of Little Nest Pediatrics in Chatham, NJ. She earned her BS in Biology magna cum laude from the University of Kentucky in 2007. She then earned her MD cum laude from the University of Louisville in 2011 and completed her pediatric residency there in 2014.
After training, Dr. Irwin spent eight years as a general outpatient pediatrician before relocating to New Jersey in 2022 with her husband and three young children. She holds dual board certification in General Pediatrics and Lifestyle Medicine, achieving the latter during the height of the pandemic. Her Lifestyle Medicine focus emphasizes the role of plant-predominant nutrition, exercise, sleep, and social connection in children's long-term health. She brings particular depth to behavior and development, and she counsels families on everything from potty training to managing anxiety. Outside the office, Dr. Irwin spends time with her family and dog, and she enjoys hiking, reading, crafting, coffee, and plant-based cooking.
Education & Training
Undergraduate
University of Kentucky, BS Biology, magna cum laude, 2007
Medical School
University of Louisville School of Medicine, MD, cum laude, 2011
Residency
Pediatric Residency, University of Louisville, completed 2014
Certifications
Conditions Treated
Who is Dr. Irwin right for?
Dr. Irwin is a strong fit for families with children from newborns through adolescence. Parents who want direct, unhurried access to their pediatrician will feel at home here. She is particularly well-suited for children managing asthma, eczema, ADHD, anxiety, or developmental concerns. Families interested in nutrition, lifestyle, and preventive health will benefit from her Lifestyle Medicine background. Her low enrollment means she genuinely knows each child and family she cares for.
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Frequently Asked Questions
Dr. Irwin treats a wide range of pediatric conditions. These include asthma, eczema, ADHD, anxiety, and depression. She also manages acute sick visits, minor injuries, and chronic conditions. Her Lifestyle Medicine certification adds depth to nutrition, sleep, and behavioral health counseling.
Yes. Dr. Irwin holds dual board certification in General Pediatrics and Lifestyle Medicine. She earned her General Pediatrics certification after completing her residency at the University of Louisville in 2014. She achieved her Lifestyle Medicine certification during the pandemic.
Yes. Dr. Irwin makes house calls for newborn, two-week, and one-month checkups. This approach supports new parents during the earliest and most demanding weeks of a child's life. She also offers after-hours and weekend visits for members.
Dr. Irwin gives behavior and development particular attention in her practice. She conducts screenings at well-child visits and counsels families on a broad range of topics. These include potty training, anxiety, ADHD, and developmental milestones. She also offers parenting counseling as part of her membership services.
Dr. Irwin uses her Lifestyle Medicine training to address the root factors shaping children's long-term health. She counsels families on plant-predominant nutrition, physical activity, sleep habits, and social connection. This approach complements her general pediatric care rather than replacing it.
Dr. Irwin earned her MD cum laude from the University of Louisville School of Medicine in 2011. She completed her pediatric residency there in 2014. Before medical school, she earned a BS in Biology magna cum laude from the University of Kentucky in 2007.
Yes. Dr. Irwin personally runs in-office tests during visits. She tests for strep, flu, COVID, and performs urinalysis on-site. She also takes all measurements and vitals herself rather than delegating to staff.
Yes. Dr. Irwin supports families from birth. She conducts newborn home visits and schedules house calls at the two-week and one-month marks. Parents can reach her directly by text, call, or email with questions between visits.
Doctor profile last updated March 21, 2026