All staff can be reached at our main office number, 845.424.4800. For more information on making a donation to the Garrison Institute and other ways to support our work, please contact”

Senior Staff

Jeanne Johnson, Chief Operations Officer | Extension 101

Jane Kolleeny, Volunteer Director of Retreats and Business Development | Extension 103

Dr. Angel Acosta, Director of the Garrison Institute Fellowship |

Osvaldo Principe, Chief Digital Officer 


Tony Cisneros, Director, Pathways to Planetary Health,

Monique Francis, Business Support Manager, | Extension 108

Henry GarciaMaintenance, | Extension 118

Elisabeth Preisinger, CBR Manager, | Extension 113

Pema Chodon Lama, Retreats Support

Sonam Topgyal, Retreats Support

Casey Tang, Lead Experience Designer,

Rosanna ScangaHousekeeping, | Extension 135

John TeagleMaintenance, | Extension 118


Garrison Institute International Staff

Sander Tideman, Executive Director,

Chamutal Afek Eitam, Director of Learning,

Jantine Lebbink, Office Manager,



Shelley Boris
(Fresh Company), Food Service, | 845.424.8204

David Kelly Duncan, Audio-Visual, | 914.525.9691

Images by Erin Wik Photography