Associate Director Katy Troyer with children in Guatemala

Associate Director Katy Troyer with children in Guatemala

Laurie Mathews, Co-Director

Kim Troggio, Co-Director

Katy Troyer, Associate Director  

Becky Bay, Country Coordinator 

Nathan Raymond, Country Coordinator

Victoria Kuhlman, Country Coordinator

Peter VanicekClinic Coordinator


Trip Leaders


Laurie Mathews, GDR Co-Director and Trip Leader. Laurie co-founded Global Dental Relief, formerly Himalayan Dental Relief, in 2001. She loves the time spent with children and volunteers overseas. Laurie founded GDR after a career working in public policy. From 1990-2001, she was the Director of Colorado State Parks.


  Kim_small Kim Troggio, GDR Co-Director and Trip Leader. Kim founded GDR’s partner Global Dental Expeditions, in 2002. Over the past year, the two organizations merged.  Kim specializes in volunteer placement and logistics, and works to ensure each volunteer has the best possible experience. Kim is primary liaison to local partners and leads trips to our newest locations. Her prior experience is in social work and the adventure travel industry.


  Lise Aangenbrug in Kenya_webLise Aangeenbrug, GDR Board Member and Trip Leader. Lise has been a long- time supporter of GDR, but didn’t join as a non-dental volunteer until 2013. Having lived and worked in Kenya in her 20s, she was thrilled to return there with GDR and commit her time to being a trip leader in Kenya. “While I was tentative the first time as a volunteer with no prior experience in a dental clinic, GDR makes it easy to immediately fit in and contribute in a meaningful way.” Lise is the Executive Director of Great Outdoors Colorado and carves out several weeks a year to give her time and passion to GDR, Kenyan kids, and making the GDR volunteer experience run smoothly.


Bic_DDSBic Aki, DDS, Trip Leader. Bic first traveled with GDR to Vietnam where she fell in love with volunteering abroad. She is now a raving GDR fan and excited to cross over to be a trip leader. She hopes to pass this passion on to her two sons. Bic maintains a private dental practice in San Leandro, CA, is an ironman triathlete, an ultra distance runner and loves to travel the world scuba diving with her husband.  


Becky Crump, RDHBecky Bay, RDH, GDR Country Coordinator and Trip Leader.  As a small town Virginia girl, Becky never imagined she would have the opportunity to visit rural communities on the other side of the globe.  With her first trip with GDR to Guatemala, she was hooked. “The opportunity to treat children around the world, that otherwise have no access to care, is one of the most humbling and rewarding experiences of my life. Dentistry is truly a passion of mine and to see the joy that it brings each trip is life altering every time.”


Geoff_Hoffman_smallGeoff Hoffman, DDS, GDR Board Member and Trip Leader. My adventure with GDR began when my wife and I decided to hike the Everest Trail and do a little dental work on the way. Little did we know they (the kids and GDR) would forever change our lives. As a Trip Leader, I hope to bring years of adventure travel and experience as founder of a 40-year, large dental group to enhance the volunteer experience. I plan to bring efficiency, care, energy, love, and the best possible care for those wonderful children.


Mark_smallMark Lisagor, DDS, Trip Leader. Mark is a “cross over” Trip Leader since he is also a dentist and began working with us as a dental volunteer on trips to India and Nepal. His love of children (he is a pediatric dentist) and sense of fun are infectious, and in 2006 he agreed to “cross over” and lead GDR project trips in Nepal and India.  



Sue_smSue McEvoy, Trip Leader. Sue joined our Ladakh, India trip in 2006 as a way to visit this remote Himalayan kingdom, go on a trek and give back in service. Inspired by this magical place, Sue became a volunteer leader in 2009 and has been co-leading trips to Ladakh and Nepal ever since. At home, Sue works as the Redstone Castle historian in Redstone, Colorado, and is also a Pilate’s instructor and writer. Her hobbies include trekking, ice climbing and powder skiing.  


Wes_smallWes Takahashi, Trip Leader. Wes joined the project in 2005 as a volunteer in Vietnam. He quickly responded to the adventure and immersion in local cultures and in 2006 signed on as a Trip Leader. He has worked in all Country locations. Wes works as a salmon fishing guide in British Columbia, Canada and is an avid musician and world traveler.  


Katy Troyer in Guatemala Clinic_webKaty Troyer, GDR Associate Director and Trip Leader.   Katy is a global humanitarian at heart. She began volunteering overseas as a teenager and hasn’t looked back. She joined the GDR family in 2012 and enjoys trip leading especially in her second home of Guatemala. Katy loves Zumba, spending time with her family, and exploring beautiful Colorado.


Peter Vanicek with kids in Nepal_cropPeter Vanicek, GDR Clinic Coordinator and Trip Leader. After almost thirty years in private practice, Peter has traveled extensively and volunteered in many of our clinics and joined us as a trip leader. He also helps coordinate our equipment and supplies for the clinics and loves to constantly update and improve the volunteer experience.


Tamera photoTamera Bedford, Trip Leader.  Tamera became interested in volunteering upon returning from a trip to India where she was exposed to poverty and need unlike she’d ever seen before.  Helping the children in Nepal and Cambodia, where she leads trips, has been a life changing experience for her.  Tamera lives in Hong Kong ten months of the year and Leadville, CO the other two.  She is a visual artist when she isn’t busy being a mom or traveling.