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Dr. Masonholder is on Doximity

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  • Office

    109 E Walnut St
    Columbus Junction, IA 52738
    Phone+1 319-728-2429
    Fax+1 319-728-7600

Education & Training

  • Des Moines University College of Osteopathic Medicine
    Des Moines University College of Osteopathic MedicineClass of 1979

Certifications & Licensure

  • IA State Medical License
    IA State License 1980 - 2020

Professional Memberships