Johnny Castle

Director/Advisor at RO Health
Snoqualmie, Washington, United States

Johnny Castle is Director at Cadence Biomedical, Encompass, and RO Health. He has founded and led companies including Cantametrix, Hamilton-Thorn, and Seragen, with several achieving public listings or acquisitions. His expertise includes entrepreneurship, advising early-stage companies, and teaching practical business methods.

  • RO Health Director/Advisor 2013–present · current
  • Cadence Biomedical Director 2010–present · current
  • Encompass Director 2007–present · current
  • Keiretsu Forum Member 2008–2013 · past
  • Seattle University Lecturer in Entrepreneurship 2008–2014 · past
  • Bainbridge Graduate Institute Lecturer in Entrepreneurship 2006–2012 · past
  • NWEN Board member 2001–2009 · past
  • Foster School of Business, University of Washington Lecturer in Entrepreneurship, retired 2000–2013 · past
  • Entrepreneur Community member 1988–2010 · past

Education

  • UW Foster School of Business Lecturer in Entrepreneurship, retired · 2001–2013
  • Harvard Business School PMD, Business · 1978
  • Massachusetts Institute of Technology Sc.D., Chemical Engineering · 1957–1964
  • Seattle University
  • Bainbridge Graduate Institute
  • Nanyang Technological University Singapore

Organizations

See all 9
  • RO Health Director/Advisor 2013–present · current
  • Cadence Biomedical Director 2010–present · current
  • Encompass Director 2007–present · current

Education

  • UW Foster School of Business Lecturer in Entrepreneurship, retired · 2001–2013
  • Harvard Business School PMD, Business · 1978
  • Massachusetts Institute of Technology Sc.D., Chemical Engineering · 1957–1964
  • Seattle University
  • Bainbridge Graduate Institute
  • Nanyang Technological University Singapore

Online