Bringing a newborn home is one of the most exciting and overwhelming experiences of your life. Having a pediatrician you can trust makes all the difference. Dr. Ariolis Grullon provides gentle, attentive care for newborns and infants throughout Passaic, Paterson, Garfield, and the surrounding New Jersey communities.

Why Passaic parents choose Dr. Grullon for their newborns

Those first weeks and months with a new baby come with a lot of questions. Is my baby gaining enough weight? Why are they crying so much? Is this rash normal? Dr. Grullon is here to help you navigate it all. She takes the time to listen, explain, and make sure you feel confident caring for your little one at every stage.

A trusted partner from day one

Dr. Grullon believes that the relationship between a pediatrician and a family starts at birth. She is committed to being a consistent, familiar presence for your baby from that very first newborn visit all the way through childhood and adolescence.

Board-certified and hospital-affiliated

Dr. Grullon is a board-certified pediatrician and fellow of the American Academy of Pediatrics, with affiliations to three of New Jersey's most respected hospitals: Hackensack University Medical Center, St. Mary’s General Hospital, and Saint Joseph's Regional Medical Center. You can feel confident that your baby is in exceptionally qualified hands.

Bilingual newborn care in Spanish and English

Dr. Grullon is fully fluent in both Spanish and English. New parents deserve to feel fully understood, and she makes sure every family can ask questions, voice concerns, and receive guidance in the language they are most comfortable with.

Same-day sick visit appointments

Newborns can take a turn quickly, and waiting is not an option when you are worried about your baby. Dr. Grullon offers same-day sick visits for urgent concerns such as fevers, feeding difficulties, jaundice, and other common newborn issues. Appointments open at 9:00 AM, so call early to secure your spot.

What to expect at your newborn visits

In those early months, well-baby checkups are essential. Dr. Grullon will monitor your newborn's growth, development, and feeding patterns, and guide everything from sleep safety to vaccination schedules. Areas of focus during newborn and infant care include:

• Weight and growth monitoring: Ensuring your baby is thriving

• Feeding support: Guidance for both breastfeeding and formula-fed babies

• Newborn jaundice: Early detection and management

• Developmental milestones: Tracking your baby's progress from day one

• Vaccine scheduling: Keeping your baby protected with a safe, proven immunization plan

• Atopic conditions: Early identification of eczema, dermatitis, and other skin concerns common in infants

Personalized, compassionate care

No two babies are alike, and Dr. Grullon treats them that way. She takes time with every visit, answers every question without rushing, and makes sure both baby and parents leave feeling reassured and well cared for.

About Dr. Ariolis Grullon

Dr. Grullon is a female Spanish speaking pedtirican who earned her medical degree from Pontificia Universidad Católica Madre y Maestra and completed her internship and residency at Bronx-Lebanon Hospital Center. After gaining experience in a busy New York City practice, she founded Healthy Happy Children Pediatrics with one goal in mind: giving families in the Passaic area access to personalized, high-quality pediatric care starting from birth.

Parents consistently describe her as warm, patient, and genuinely invested in the well-being of every child she sees. She believes that clear communication is the foundation of great care, and she takes pride in making sure every parent fully understands their baby's health.

What parents are saying

"My favorite pediatrician. She is so nice, she treats your baby with respect and always has a smile on her face. My baby loves her, and the staff are very nice. The best pediatrician."

"I cannot begin to express my satisfaction with the staff and Dr. Grullon. Every one was courteous, professional, and made my visit as comfortable as they possibly could. My children are in the best hands."

"This is the best pediatrician I have ever seen. Dr. Grullon is the most caring and patient doctor I know. She pauses when she sees a child getting nervous and takes the time to explain everything. Thank you, Dr. Grullon!"

Frequently asked questions

When should I schedule my newborn's first appointment?

Most pediatricians recommend scheduling your baby's first visit within two to three days of leaving the hospital. Contact our office before or shortly after your due date so we can get you set up right away.

Do you accept newborn patients?

Yes. Dr. Grullon warmly welcomes newborns and their families. Visit our New Patients page to complete the necessary forms before your first visit.

Who does Dr. Grullon serve?

The practice welcomes families from Passaic, Paterson, Garfield, and the surrounding areas of New Jersey.

Does Dr. Grullon speak Spanish?

Yes. Dr. Grullon is fully bilingual and provides care in both Spanish and English.

How do I book a same-day sick visit for my baby?

Same-day sick appointments open for scheduling at 9:00 AM. We recommend calling early, as availability fills quickly.

What ages does Dr. Grullon see?

Dr. Grullon sees patients from newborns through adolescence, providing dedicated care at every stage of your child's development.

Your baby deserves the best care from the very beginning

The first days and months of your baby's life matter more than you know. Schedule a newborn appointment with our baby doctor serving patients in Passaic, NJ, and give your little one the strong, healthy start they deserve.