Johnsen Laboratory

The Johnsen laboratory studies the role of variation of clotting factors, blood groups, and blood cell traits in disease, and the biological impact of differences between these factors in terms of bleeding diseases, blood clotting, pregnancy complications, and susceptibility to infection.

The work in Dr. Johnsen's lab has significance in blood clotting disorders that are inherited, such as von Willebrand disease and familial platelet disorders, and acquired blood-related diseases, including pregnancy-related vascular complications.

Areas of Study

  • Modifiers of coagulation (particularly von Willebrand Factor)
  • Blood types
  • Inherited platelet disorders
  • Pregnancy and changes in blood clotting
  • Blood groups and microbes
  • Read more

Dr. Johnsen's Background

  • Joined Bloodworks Northwest as an Assistant Member in 2008
  • 2008 – present: Assistant Member (Bloodworks Northwest) and Assistant Professor of Medicine (University of Washington)
  • 2003-2007: Clinical Lecturer/Post-doctoral Research Fellow (University of Michigan)
  • 2000-2003: Hematology/Oncology Fellow (University of Michigan)
  • 1997-2000: Resident, Internal Medicine (University Hospitals of Cleveland)
  • MD from Case Western Reserve University School of Medicine (1998)

Jill M. Johnsen, M.D.
Assistant Member
Bloodworks Northwest
Research Institute

Associate Professor
Department of Medicine
University of Washington

Bloodworks Northwest
Research Institute
1551 Eastlake Avenue E, Suite 100
Seattle, WA 98102

UW Mailstop 359190
Phone: (206) 568-2200 (Research Only)
FAX: 206) 587-6056 (Research Only)

All patient and clinical related inquiries should be directed to:

Bloodworks Northwest
Hemophilia Clinic
921 Terry Ave.
Seattle, WA 98104

Phone: (206) 689-6507
FAX: (206) 689-8341

Rachel A. Sessum
Sr. Administrative Coordinator
Phone: (206) 568-2200
Fax: (206) 587-6056