Neonatologist: What a Newborn Specialist Does & When Your Baby Needs One
Quick answer: A neonatologist (sometimes called a pediatric neonatologist) is a pediatrician with extra training in caring for newborns who are born premature, sick or with medical conditions that need intensive care. They lead the care team in the neonatal intensive care unit (NICU), managing breathing support, feeding, infections, jaundice and other newborn problems until a baby is ready to go home. Most healthy full-term babies never need a neonatologist; their care is handled by a pediatrician or family doctor.
What is a neonatologist?
A neonatologist is a medical doctor who specializes in the care of critically ill newborns, especially babies born early, at a low birth weight, or with conditions such as breathing problems, infections or birth defects. They usually work in hospital NICUs and special care nurseries, and may also attend high-risk deliveries so they are ready to help a baby the moment it is born.
Premature birth is the most common reason babies need a neonatologist. According to the CDC, about 1 in 10 babies in the United States is born preterm, meaning before 37 weeks of pregnancy.
Neonatologist at a glance
| Who they care for | Premature, low-birth-weight and sick newborns, usually from birth until they leave the hospital |
| Where they work | Neonatal intensive care units (NICUs), special care nurseries and high-risk delivery rooms |
| Training | Medical school (4 years) + pediatrics residency (3 years) + neonatal-perinatal medicine fellowship (3 years) |
| Board certification | American Board of Pediatrics, in General Pediatrics and the Neonatal-Perinatal Medicine subspecialty |
| Common conditions | Prematurity, breathing problems, jaundice, infection, low blood sugar, feeding problems, birth defects |
| Works with | NICU nurses, respiratory therapists, maternal-fetal medicine doctors, pediatric surgeons and other specialists |
What conditions does a neonatologist treat?
- Prematurity and low birth weight: keeping tiny babies warm, fed and growing while their organs mature.
- Breathing problems: respiratory distress syndrome (RDS), transient tachypnea of the newborn, apnea of prematurity and persistent pulmonary hypertension of the newborn (PPHN).
- Lung disease of prematurity: bronchopulmonary dysplasia (BPD), often followed later by a pediatric pulmonologist.
- Newborn jaundice: high bilirubin levels treated with phototherapy (special lights) or, rarely, an exchange transfusion.
- Infections: including newborn sepsis, which needs fast treatment with antibiotics.
- Low blood sugar (hypoglycemia), especially in babies of mothers with diabetes or babies who are small or large for their age.
- Feeding and gut problems: trouble feeding, reflux and necrotizing enterocolitis (NEC), a serious bowel condition in premature babies.
- Heart problems: such as patent ductus arteriosus (PDA) and other congenital heart defects, together with a pediatric cardiologist.
- Brain and eye complications of prematurity: bleeding in the brain (intraventricular hemorrhage) and retinopathy of prematurity (ROP).
- Birth injury or lack of oxygen at birth: hypoxic-ischemic encephalopathy (HIE), which may be treated with therapeutic cooling.
- Birth defects and genetic conditions that need surgery or specialized care, and withdrawal symptoms in babies exposed to opioids or other substances before birth.
When does a baby need a neonatologist?
A neonatologist is usually involved when a baby:
- Is born before 37 weeks, and especially before 34 weeks
- Has a low birth weight (under about 5.5 pounds or 2,500 grams)
- Has trouble breathing, low oxygen levels or needs resuscitation at birth
- Has a suspected infection, seizures, very high jaundice or low blood sugar that doesn’t respond to feeding
- Was diagnosed before birth with a heart defect or other condition that needs care right after delivery
- Is one of twins, triplets or more, or the pregnancy had complications such as preeclampsia
If you are expecting a high-risk delivery, ask your obstetrician whether you can meet the neonatology team before birth. Many hospitals offer a prenatal consultation so you know what to expect.
NICU levels: what they mean
The American Academy of Pediatrics (AAP) describes four levels of newborn care. Knowing your hospital’s level helps if you have a high-risk pregnancy:
| Level | Type of care | Typical babies |
|---|---|---|
| Level I | Well newborn nursery | Healthy babies born at or near term |
| Level II | Special care nursery | Babies born at about 32 weeks or later with problems expected to improve quickly |
| Level III | NICU | Babies born before 32 weeks or critically ill babies needing ongoing breathing support |
| Level IV | Regional NICU | The most complex cases, including babies needing surgery for birth defects |
What to expect in the NICU
The NICU can feel overwhelming at first, with monitors, alarms and tubes. The neonatologist leads a team that checks on your baby every day, often during morning “rounds” that parents are usually welcome to join. Common equipment includes an incubator to keep your baby warm, monitors for heart rate, breathing and oxygen, breathing support from nasal tubes (CPAP) to a ventilator, IV lines for fluids and medicine, and feeding tubes until your baby can breastfeed or bottle-feed.
Parents are an important part of the team. Skin-to-skin holding (kangaroo care) and your breast milk, if you’re able to provide it, can help your baby. Ask about pumping support, and see our guide on whether your baby is getting enough breast milk or formula.
Questions to ask your baby’s neonatologist
- What is my baby’s main problem right now, and what is the plan for today?
- What milestones does my baby need to reach before going home?
- When can I hold my baby, do skin-to-skin, and help with feeding and care?
- Which specialists will see my baby, and what follow-up will we need after discharge?
Going home from the NICU
Babies are usually ready to go home when they can keep their body temperature steady in an open crib, take all feedings by mouth and gain weight, and breathe without long pauses. Before discharge, the team will review safe sleep, car seat safety, medicines and follow-up visits. Many NICU graduates have regular checkups with their pediatrician plus hearing, eye and developmental follow-up. Premature babies are also at higher risk from RSV, so ask about infant RSV protection. Our first pediatrician visit checklist and newborn safe sleep guide can help you prepare.
Every listing in the Pediatric.me directory is NPI-verified from the U.S. federal registry. You can also compare other types of pediatricians.
Frequently asked questions
What is the difference between a neonatologist and a pediatrician?
A pediatrician cares for healthy and sick children from birth through the teen years, mostly in clinics. A neonatologist is a pediatrician with three more years of training who cares for premature and critically ill newborns in the hospital, usually in the NICU. After the NICU, your baby’s ongoing care moves to a pediatrician.
Is a neonatologist the same as a pediatric neonatologist?
Yes. “Neonatologist” and “pediatric neonatologist” mean the same thing. Neonatology is a subspecialty of pediatrics, and the formal board certification is called Neonatal-Perinatal Medicine.
How long does a baby stay in the NICU?
It varies from a few days to several months. Stays depend on how early the baby was born and what problems they have. A common rule of thumb for premature babies is that many go home around their original due date, but your neonatologist can give a better estimate for your baby.
Do neonatologists see babies after they leave the hospital?
Usually not for routine care, which moves to your pediatrician. Some hospitals run NICU follow-up clinics where neonatologists and developmental specialists check growth and development in the first years for babies born very early or very sick.
How long does it take to become a neonatologist?
About 10 years after college: four years of medical school, three years of pediatric residency and three years of neonatal-perinatal medicine fellowship, followed by board certification through the American Board of Pediatrics.
This article is for general education and is not a substitute for medical advice. Always talk with your baby’s care team about their specific situation. If your newborn has trouble breathing, turns blue or is hard to wake, call 911.
