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Care Team

Need an appointment sooner? While your primary care provider or specialist are the anchor of your care team, their advanced practice providers and physician partners are available to provide care when you need it.

Locations

Joliet

301 N. Madison St. Suite 210Joliet, Illinois 60435
815-514-2200

About Maria Irene Victoria Onagan, MD

Philosophy of Care

I believe in providing compassionate care and in building relationships based on mutual trust and respect. I value working closely with parents and informing them on best practices in order to make informed healthcare decisions from well care and development to different illnesses. I look forward to partnering with you in the care of your child.

Board Certifications

Pediatrics

Languages

English

Tagalog

Clinical Interests

General pediatrics, growth and development, Asthma, allergies, Eczema, ADHD

Personal Interests

I enjoy spending time with my family, watching movies, and cooking

Memberships

American Academy of Pediatrics

Education
Schools
University of Santo TomasGraduation Date: 1992Degree: MD
Residency
Monmouth Medical CenterResident in Pediatrics2009
Cardinal Santos Medical CenterResident in Pediatrics1996

Ratings and Comments

Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

Excellent pediatrician.

5

Apr 5, 2026

Thank you so much Dr. Onagan!! Arjun is feeling much better!!

5

Apr 4, 2026

Maria Onagan is an amazing pediatric Dr.

5

Mar 4, 2026

Our family absolutely adores Dr. Onagan, I travel 40 minutes just so my kids can see her, because I trust her expertise. She is by far the best pediatrician, she explains everything and makes me feel so reassured before leaving the appointment.

5

Feb 18, 2026

I don't have words to fully explain how much my family adores and appreciates Dr. Onagan. She always takes time with us and makes sure the kids are reaching their milestones. She answers all my questions with patience and kindness and I trust her completely. She remembers our family and makes us feel safe and well taken care of. Dr. Onagan is a woman who clearly wants to protect children and keep them safe and healthy. We are blessed to have her as our children's pediatrician.

5

Feb 7, 2026

Patient Satisfaction Rating

4.9

50 Reviews

The Patient Satisfaction Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.

Contact Us
Need Help?
Corporate Mailing Address1100 W 31st Street
Downers Grove, Illinois 60515
Main Line - (630) 469 9200Billing Customer Service - (866) 734 7680
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