Mark Duncan MD

South Island Medical
Mark Duncan MD


Patient Care Philosophy

  • Kindness, compassion and respect come first.
  • Listening and patience come next.
  • Safe, high-quality care founded upon evidence-based studies is key.
  • Communication equals success.

Scope of Care

  • Outpatient primary care for patients of all ages with chronic illnesses
  • Well baby/child care
  • Acute treatment of illness or injury with immediate access
  • Preventive health evaluation and surveillance
  • Women's health needs including cancer screening and contraception
  • Minor surgery/procedures including wound closure, skin biopsy, IUDs, etc.
  • Primary care treatment of mental illness
  • Immunizations


  • West Virginia University School of Medicine, 1995

Internship & Residency

  • Naval Hospital Jacksonville


  • Board Certified by the American Board of Family Medicine

Please note:

This provider is not an employee of WhidbeyHealth. For your medical records, please call South Island Medical directly.

Call: 360.331.3343

1690 Layton Road PO Box 935 Freeland, WA 98249