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Thomas Callahan, DO

Languages:

English

Specialties:

Pediatrics
Patient Rating
4.8 / 5 (109 Reviews)

Thomas Callahan, DO, is a pediatrician at Medical Associates Clinic in Dubuque, Iowa. Dr. Callahan offers complete care for children from birth through age 18, including the diagnosis and treatment of acute and chronic illness. Along with his partners, he provides pediatric care for children admitted to the General Pediatric Unit.

Dr. Callahan completed his Bachelor of Science degree at Saint Ambrose University in 2003 and attended medical school at Des Moines University, where he graduated in 2007. After medical school, Dr. Callahan went on to complete his residency and served as Chief Resident at Blank Children's Hospital in Des Moines, Iowa. 

During his time at Medical Associates, Dr. Callahan has held numerous leadership positions, including Pediatric Chair at Mercy Hospital (2010 - 2016), President of the Mercy Hospital Executive Committee (2016 - 2018), the Medical Associates Board of Directors (2020 - 2024), and on the Hills and Dales Board of Directors (2016 - 2024). Outside of work, he enjoys spending time with his wife and 6 children.

Pediatrics Department

Locations

Credentials

Medical School

Des Moines University - Osteopathic Medical Center - 2007

Residency

Pediatrics, Blank Childrens Hospital, 2007 - 2010

Hospital Affiliations

  • MercyOne Dubuque Medical Center
    •

    Ratings and Reviews

    Distribution

    5
    20 Comments
    4
    0 Comments
    3
    0 Comments
    2
    0 Comments
    1
    0 Comments

    Question Rating Breakdown

    4.8
    "Provider gave enough information "
    4.9
    "Provider Listened"
    4.9
    "Provider Would Recommend"
    4.9
    "Providers Courtesy and Respect"

    What Patients Are Saying

    5 Stars
    July 15, 2026
    "Dr. T Callahan and his nurse Hannah did a great job listening to all concerns brought up and thoroughly went through an evaluation with my child during his well child appointment."
    5 Stars
    July 13, 2026
    "Love dr t callahan!"
    5 Stars
    June 30, 2026
    "We love Dr. Callahan!"
    5 Stars
    June 15, 2026
    "Dr. Callahan is an outstanding provider. He is thorough with his assessment and intake, and he is so patient at the end of the appointment explaining his plan of care/diagnosis and answering any follow-up questions. Sara G. is one of our favorite nurses in the peds department. Always happy to be at an appointment when she's our nurse."
    5 Stars
    June 11, 2026
    "Dr Tom and his nurse are both fantastic. I never feel rushed, and they both do an amazing job making my daughter comfortable."
    5 Stars
    June 10, 2026
    "You are lucky to have Dr. Callahan."
    5 Stars
    February 10, 2026
    "Dr. Callahan was very thorough and had the best interest of our twins! Highly recommend!"
    5 Stars
    February 02, 2026
    "Great visit. Love how he took the time to talk to my son vs just talking to me. Always knowledgeable. Fantastic beside manner."
    5 Stars
    January 20, 2026
    "Tom and Lynn are the best!! They are the best team - I don't know what I would do without them!!"
    5 Stars
    January 14, 2026
    "Tom Callahan has been."
    5 Stars
    January 02, 2026
    "This was a great visit where all my questions were answered and I didn't feel rushed at all."
    5 Stars
    December 22, 2025
    "Lynn is the best nurse."
    5 Stars
    November 18, 2025
    "Dr. Tom Callahan is a wonderful physician who takes the time to fully assess the child and make them feel comfortable. Even with the strep test, they answer the questions that my son needed and the nurse took her time with [REDACTED]. We would definitely recommend him to anyone and have seen him as well as other physicians for the last decade and couldn't ask for any better care from these providers."
    5 Stars
    November 17, 2025
    "Dr Callahan genuinely cares about his patients. My mind is at ease knowing he is there if we need him. He gives great advice and is straight forward which is much appreciated. One of the two doctors I would definitely drive the extra miles to have my son seen."
    5 Stars
    November 06, 2025
    "We brought up an issue our child was experiencing and Dr. Callahan was extremely thorough and didn't brush off our concerns."
    5 Stars
    October 22, 2025
    "Always excellent, top-notch treatment from all the staff. There's a reason we drive over an hour for medical care."
    5 Stars
    October 20, 2025
    "Dr. Callahan and Nurse Lynn were so helpful and kind during our visit. Helpful information and great with my child."
    5 Stars
    October 10, 2025
    "Dr. Tom Callahan and Nurse Lynn are an amazing team and I always know my kids are in great hands and I can ask questions any time. They treat my kids with kindness and patience."
    5 Stars
    September 22, 2025
    "My children are my greatest blessing in life. I'm beyond grateful to have a doctor for them who always listens to my concerns, no matter how small, and always takes the time to explain the diagnosis, treatment, labs, etc."
    5 Stars
    September 16, 2025
    "Tom and Lynn went above and beyond to have our child seen in a timely manner. They understood the concerns we had and didn't take it lightly. Our child was seen and a thorough plan was put into place. We cannot thank them enough for helping our child."
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