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Dr. Hammer is on Doximity

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Education & Training

  • Southern Illinois University
    Southern Illinois UniversityResidency, Surgery, 1976 - 1981
  • Southern Illinois University School of Medicine
    Southern Illinois University School of MedicineClass of 1976

Certifications & Licensure

  • IL State Medical License
    IL State Medical License 1977 - 2026
  • CO State Medical License
    CO State Medical License 1994 - 2007
  • IA State Medical License
    IA State Medical License 1991 - 1991
  • American Board of Obesity Medicine Obesity Medicine

Awards, Honors, & Recognition

  • Fellow (FACS) American College of Surgeons

Publications & Presentations

PubMed

Professional Memberships

Hospital Affiliations