Marshall Horwitz, MD, Medical Genetics, Seattle, WA, Seattle Cancer Care Alliance


Medical Genetics Seattle, WA

Clinical Genetics, Clinical Molecular Genetics, Molecular Genetic Pathology


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  • Dr. Marshall Horwitz, MD is a board certified medical geneticist in Seattle, Washington. He is currently licensed to practice medicine in Washington. He is affiliated with Seattle Cancer Care Alliance and UW Medicine/University of Washington Medical Center.

Certifications & Licensure

  • WA State Medical License
    WA State Medical License 1992 - 2022
  • American Board of Internal Medicine Internal Medicine
  • American Board of Medical Genetics and Genomics Clinical Genetics and Genomics

Awards, Honors, & Recognition

  • Elected Member The American Society for Clinical Investigation, 2003
  • Super Doctor

Publications & Presentations


Hospital Affiliations