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John Oholleran, MD, General Surgery, Sterling, IL, CGH Medical Center

JohnDOholleranMD

General Surgery Sterling, IL

Minimally Invasive Surgery

Physician

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Education & Training

  • SCL Health - Saint Joseph Hospital
    SCL Health - Saint Joseph HospitalResidency, 1987 - 1992
  • University of Nebraska College of Medicine
    University of Nebraska College of MedicineClass of 1987

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1992 - 2026
  • AZ State Medical License
    AZ State Medical License 2023 - 2025
  • IA State Medical License
    IA State Medical License 2022 - 2025
  • OR State Medical License
    OR State Medical License 2023 - 2025
  • IL State Medical License
    IL State Medical License 2019 - 2023
  • CO State Medical License
    CO State Medical License 1989 - 1995
  • American Board of Surgery Surgery

Hospital Affiliations