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Mariko M. O’Byrne

About Mariko M. O’Byrne

Titles

Attending Physician

Clinical Assistant Professor of Pediatrics, Perelman School of Medicine at the University of Pennsylvania

Certifications

Pediatrics – American Board of Pediatrics

Leadership and Memberships

2014-Present, American Academy of Pediatrics, Section on Obesity
2007-Present, American Academy of Pediatrics, Fellow

Education & training

Graduate Degree

MS - Columbia University College of Physicians and Surgeons, New York, NY

Medical Degree

MD - George Washington University School of Medicine & Health Sciences, Washington, DC

Internship

Pediatrics - The Children’s Hospital of Philadelphia

Residency

Pediatrics - The Children's Hospital of Philadelphia

Team affiliations

View fewer all team affiliations View all all team affiliations

Patient experience rating

(based on 135 submissions)

  • Clear Explanation
    4.9 of 5
  • Showed Concern
    4.9 of 5
  • Would recommend
    4.9 of 5
  • Discussion of Proposed Treatment
    4.9 of 5
Learn about the patient experience rating system

Comments

  • Dr. O'Byrne is the best pediatric primary care doctor I've ever seen. She's the one I would recommend to all my friends who are parents. Dr. O'Byrne is incredibly patient; she truly listens and understands my concerns. Even when it's a minor issue that another doctor might brush off, she never dismisses it. She always empathizes from a parent's perspective and offers helpful tips to address my concerns.

    5 of 5
    Nov 07, 2024
  • We love Dr. O'Byrne

    5 of 5
    Oct 22, 2024
  • We adore Dr. O Byrne! She's kind, relatable, and always helpful!!

    5 of 5
    Sep 30, 2024
  • Dr. O'Byrne is wonderful! She is attentive and clearly loves babies! I love how she interacts with both the patient and his parents.

    5 of 5
    Sep 18, 2024
  • This was our first time meeting Dr. O'Byrne. She was fantastic! She was kind, empathetic, thorough with her explanations, and patient with all of our questions. She was creative and fun with our son's exam, getting him to cooperate and never get upset, even while he was not feeling well

    5 of 5
    Sep 13, 2024
  • She is awesome with my kids

    5 of 5
    May 20, 2024
  • We love Dr. O'Byrne! She's always so sweet and connects with my son and really directs the conversation and appointment at him, which was a big deal since we weee also getting shots. She made him and me feel comfortable with the plan and what to expect. She always makes sure we have time to ask whatever questions we have and explain things more than once to make sure we understand. I'm really appreciate that she noticed that there's still fluid in my sons ear and offered a follow up appointment in a month to keep tabs on it and make sure we get it a referral If we really need it. Great proactive approach which we're grateful for. She's one of the best there!

    5 of 5
    May 02, 2024
  • Dr. O'Byrne always starts off by asking us if we have any immediate questions or concerns we have regarding our son and is always answers our questions sincerely and thoughtfully (even if our questions may come off as "common sense" or us just overthinking). We really appreciate how attentive and concerned she is for our son's well-being.

    5 of 5
    Mar 13, 2024
  • First visit with Dr. O'Byrne and she had knowledge of all of her complex medical needs and concerns.

    5 of 5
    Mar 11, 2024
  • Love Dr O'Byrne

    5 of 5
    Feb 09, 2024
  • Dr. Mariko M O'byrne was knowledgeable and communicative. She was thorough in her diagnosis and explained her recommendations to me with a balance of detail and respect.

    5 of 5
    Jan 26, 2024
  • Dr, O'byrne is always attentive and willing to listen to any questions or concerns we may have. She is very easy to talk with and makes sure to address any issues or concerns we parents bring up. Overall great experience every time we see Dr. O'byrne.

    5 of 5
    Dec 08, 2023
  • We love Dr. O'Byrne! She's been our son's PCP since birth and it was so nice to have her for the unexpected sick visit. She always explains things so simply and clearly and makes it a point to always connect with my son. We love her!!

    5 of 5
    Dec 07, 2023
  • Dr. O'Byrne is a wonderfully thorough, attentive and compassionate physician. The call she made a few days after the visit to ensure my child was doing better was above and beyond and really made our concerns feel validated. Her care is too notch!

    5 of 5
    Sep 22, 2023
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About the Patient Experience Rating System

The Patient Experience Rating is an average of all responses to the care provider related questions shown above from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question. Responses are measured on a scale of 1 to 5 with 5 being the best score. We are committed to true transparency. However, to ensure the comments are fair and correctly attributed, we review each one before posting to the website. We exclude entire comments that disclose patient’s protected health information, are off-topic, or include other confidential or inappropriate content. Comments will appear on provider bios only if providers have a minimum number of comments. Comments are shared internally for education purposes to ensure that we are doing our very best for the patients and families for whom we are privileged to care. The comments are submitted by patients and families and reflect their views and opinions. The comments are not endorsed by and do not reflect the views of Children’s Hospital of Philadelphia.

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