Architectural Design Services Leadership

Michael Ryan

Michael Ryan

Michael Ryan is Principal Architect for Greenbough Design. Michael's 25+ years of healthcare design and planning expertise is focused on hospital acute care, as well as a variety of primary and specialty care clinics, including licensed OSHPD 3 clinics. Michael is intricately involved in all aspects of projects, from project initiation, through development of the design, regulatory liaison, project construction and closeout.  


  • California Architect no. C-28392
  • Nevada No. 6690


  • Master of Architecture, Virginia Tech, 1988
  • Bachelor of Architectural Engineering, Fairmont State University, West Virginia, 1985


  • Leadership in Energy and Environmental Design (LEED) Accredited Professional
  • U.S. Green Building Council (USGBC)
  • National Fire Protection Association (NFPA)

Debbie Dayringer

Debbie portrait 8-20-14-165w.jpg

Debbie Dayringer is Project Architect for Greenbough Design. Debbie's responsibilities span the entire breadth of a project, from initial planning and programming, through production of documents and construction administration.  Debbie has particular expertise in medical interior design, and leads that area of our practice, including interior finish selections and coordination with interior design consultants.


  • California Architect No. C-22939      


  • Master of Architecture, Texas A & M, 1989
  • Bachelor of Arts in Architecture, University of New Mexico, 1986

Business and Administrative Leadership

Lynn Ryan


Lynn Ryan is the Business Manager for Greenbough Design; the functions she oversees include Contract Administration, Human Resources, Technology, Accounting, and Administrative Support.  She has served as I.T. Director in business and educational environments and has managed multiple employees and projects, including large-scale IT project deployments and facilities projects.


  • Master of Arts in Educational Technology, Virginia Tech
  • Bachelor of Science in Computer Science, Millersville University of Pennsylvania


  • Association for Educational Communications and Technology (AECT)
  • eLearning Guild

Technical and Production Modeling Leadership

Cindy Giminski


Cindy Giminski is the Architectural Drafter/Modeler for Greenbough Design.


  • Bachelor of Arts, Interior Architecture, California State University Sacramento