Skip to main content
Mark O'Brien, DO, Pediatrics, Fort Wayne, IN, Lutheran Hospital of Indiana

MarkDanielO'BrienDO

Pediatrics • Fort Wayne, IN

Adolescent Medicine

Physician

Join to view full profile

Dr. O'Brien is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. O'Brien's full profile

Already have an account?

Education & Training

  • Western Reserve Health Education/NEOUCOM
    Western Reserve Health Education/NEOUCOMResidency, Pediatrics, 1990 - 1993
  • A. T. Still University Kirksville College of Osteopathic Medicine
    A. T. Still University Kirksville College of Osteopathic MedicineClass of 1990

Certifications & Licensure

  • IN State Medical License
    IN State License 1993 - 2025
  • MI State Medical License
    MI State License 2021 - 2024
  • American Board of Pediatrics Pediatrics

Professional Memberships

Hospital Affiliations

Dr. Mark O'Brien, Dr. Mark O'Brien, DO, Dr. M O'Brien, Dr. Mark Daniel O'Brien