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John Collier, MD

John S. Collier, MD

  • Pediatric Gastroenterology
St. Luke’s Clinic Provider

St. Luke’s Clinic Provider

  • Accepting New Patients

  • 4.9 Star Rating
  • About
  • Locations
  • Reviews

About John S. Collier, MD

John Collier, MD cares for children and adolescents with a wide variety of gastrointestinal disorders. He values clear, open communication, family and patient empowerment, and shared decision-making. His professional interests include esophageal diseases, functional disorders (disorders of gut-brain interaction), inflammatory bowel disease, and interprofessional communication.

Dr. Collier grew up in Des Moines, Iowa and earned an undergraduate degree at Saint John’s University in Collegeville, M...

Education

Medical School

University of Iowa College of Medicine

Residency

Indiana University Office of Graduate Medical Education

Fellowship

University of Utah

Board Certification

  • Pediatric Gastroenterology

  • Pediatrics

Provider Locations

  • Primary Location
    St. Luke’s Children’s Gastroenterology: Boise

    305 E. Jefferson St., Boise, ID 83712
    (208) 381-7310
    Mon - Fri: 8 a.m. - 4:30 p.m.
    Location details
    Street view of the Idaho Elks Children’s Pavilion where St. Luke’s Children’s Gastroenterology: Boise is located.
  • St. Luke’s Children’s Multispecialty: Twin Falls

    775 Pole Line Rd. W., Suite 302, Twin Falls, ID 83301
    (208) 814-8780
    Mon - Fri: 8 a.m. - 4:30 p.m.
    Location details
    Exterior view of the Medical Plaza building in Twin Falls where St. Luke’s Children’s Multispecialty is located.
  • St. Luke’s Wood River Medical Center

    100 Hospital Dr, Ketchum, ID 83340
    (208) 727-8238

Reviews

Overall Rating

4.9

121 Reviews

Now displaying 4 reviews
  • Dr. Collier is awesome. He was so good with my 8 yr old. Listened to our concerns gave very helpful feedback and solutions. Explained everything during procedures so my son wouldn’t panic. 10/10 would recommend.

    JUL 13, 2026

  • The doctor was very helpful. He gave us the best experience. He was very understanding and patient.

    APR 2, 2026

  • We like Dr Collier! He’s thorough and makes an effort to get to know my child

    SEP 11, 2025

  • Dr. Collier is an outstanding provider! He is incredibly thorough in his assessment, plan, and treatment. He individualizes care based on the patient and takes the time to listen to concerns.

    SEP 8, 2025

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