Our Team


Who we are. Mexico Medical Missions team members come from various denominations and religious traditions, yet we are all passionate followers of Jesus Christ. We take seriously our Lord’s command to be His witnesses to the “ends of the earth,” knowing that He showed special compassion for the sick, the crippled and the poor. Once, when asked to identify himself, Jesus simply replied, “The blind receive sight, the lame walk… the deaf hear… and the good news is preached to the poor.” Jesus always integrated preaching the Gospel with acts of love and mercy. As we labor among the people of the Sierra Madre, our prayer is that we would imitate Jesus in both word and deed.

Board of Directors

Dr. Michael Edward Berkeley – Orthopaedic Surgeon, Samachique,Chihuahua, Mexico

Virginia Sadler RN – Montgomery, TX

Tim Schmidt, M.D. – Orthopaedic Surgeon, Scottsville, VA

Tim Arnoult – Businessman – Houston, TX

Terry Deckard – Accountant – Houston, TX

Miriam Berkeley – Hospital Administrator – Samachique, Chihuahua, Mexico

Rafael Jaramillo – Engineer – Miami, FL

Team Members : Dedicated, Caring, Profesional

Dr. Mike & Maci Berkeley

Mike is an orthopedic surgeon who came to Chihuahua in 1989 to establish a crippled children’s clinic. Joined by other U.S. and Mexican health care workers, the clinic expanded into the Sierra Madre Mountains and developed into the comprehensive health care programs we have today. Dr. Berkeley works primarily at the Samachique hospital where Maci helps to administer the staff. They have two sons, Robert and Matthew. Mike serves as CEO of Mexico Medical Missions. 

Claudia Cervantes

Claudia joined out team as administrator in 2009. She has been particularly effective in raising funds and securing medical supplies from Mexican companies and foundations. Mexico does not have a strong tradition of philanthropy, but Claudia has been able to develop fruitful relationships with many Mexican entities which are interested in supporting well-run charitable organizations such as Mexico Medical Missions.

Andrés & Iris Bornman

Andrew and Iris Bornman joined us in 2009 to run the agricultural program of our Community Health Evangelism team. The Tarahumara are subsistence farmers and struggle with drought and poor harvests. Andrew works with native communities training them in better agricultural and animal husbandry techniques. Andrew and Iris have four children.

Tom and Michele Ebben

Tom had a successful career as a General Electric engineer where he managed 200 employees on three continents. Michele also had a successful career as a Registered Nurse. They both took early retirement in 2019 to join the staff of Mexico Medical Missions where Tom works as a hospital administrator and Michele helps to direct the nursing program.

Walt and Adriana Madalinski

The Madalinski’s are excited to serve in the Sierra Madre Mountains of Northern Mexico. Over the years the Lord has nurtured a deep compassion in Walt and Adriana’s hearts for the poor and needy. This compassion led them to serve the underprivileged here in the US and to serve on short-term trips around the world. It was on one of these trips in 2012 that Walt, an engineer from Texas, and Adriana, a nurse from Canada, met. Over their eleven months in Guatemala the Lord brought them together and they married at the end of that year. The Lord then led Walt out of engineering and into medical training for long-term missions. A visit in January 2019 to Mission Hospital Tarahumara in Samachique confirmed the call God has placed on their lives and their desire to serve there.

Dr. Diana Román

For years, Dr. Diana has felt a call to missions, and in 2023 she left a prestigious position as head of internal medicine at a large hospital in Torreon, Mexico in order to serve as the Director of Hospital Misión Tarahumara.

Jacob & Raquel Sotelo

Jacob and Raquel Sotelo and their son Nathan arrived at Hospital Misión Tarahumara in 2010.  Jacob is an ordained Presbyterian minister and director our Community Health Evangelism (CHE) program. For more information on Community Health Evangelism visit www.medicalambassadors.org

Dra. Josefa Peña Cortés

Josefa Peña D.D.S. has provided dental services to our hospital as well as to the communities of the Sierra for twenty years. Originally from Veracruz in the south of Mexico, she came north 20 years ago with a desire to serve the people of the Sierra. She now works full time with the Community Health Evangelism team and has a particular love of child evangelism.

The Aviation Team

Dave Hardin graduated from the Moody Mission Aviation school and came to the Sierra in 2004 to help establish our aviation program where he presently works as the aircraft mechanic. He met his wife Delia in Samachique and they presently have three sons.

Brent Dodd was born to missionary parents in Papua New Guinea and served there as a bush pilot for 15 years until joining UIM Aviation. Hollie Mae grew up on the mission field in Indonesia and lived there until marrying Brent 27 years ago. They have three grown children, as well as 9-year old Brielle who lives with them in the aircraft hanger close to the hospital.

Caitlin Dahmer

Caitlin Dahmer is a Certified Nurse Midwife from Chicago who began serving with Hospital Mision Tarahumara at the end of 2021. Tarahumara women have one of the world’s highest rates of maternal and infant mortality. She currently works in outpatient clinic visits, provides labor and delivery care, and has been developing a maternal health education program for multiple remote villages. 

Haley McNeese

Haley has been a nurse at Hospital Mision Tarahumara since June 2020. She spends much of her time in a nursing leadership role at the hospital, as well as serving on the community medical outreach team. Haley has a passion for seeing wellness disparities overcome in the name of Jesus. In the midst of the many challenges faced by the Tarahumara people, God is making his presence known, and Haley is honored to share in God’s vision and mission of bringing hope to this region.

Lydia Borman

Lydia Bornman grew up on the mission field in the jungles of Ecuador with her family. She is now following her parents’ example and is also serving the Lord in missions. Lydia is a gifted teacher and has run our missionary kids school since 2016.