Our Leadership

Board of Trustees

CMDA Borad OfTrustees Sept 2019 2

The Board of Trustees is the governing body of CMDA. It is the final policy making body for all matters. The Board interprets and applies policies of the organization and establishes guidelines for the Chief Executive Officer and staff. It is responsible for the preparation of the annual budget with the Chief Executive Officer, supervises financial officers, and gives an accounting of the organization’s finances at the annual meeting of the House of Representatives.

House of Representatives

CMDA 2018 House of Representative members

The CMDA House of Representatives exists to represent both the members and the Associations, so that: 1. The mission, vision, ministry, voice and governance of CMDA may reflect God's will as discerned by the membership; 2. The ministry opportunities and activities of CMDA can be communicated and implemented throughout its membership, the Church, and the community.

Want to Get Involved in the CMDA Board of Trustees or House of Representatives?

Executive Leadership

MikeChupp StaffPage

Mike Chupp, MD

Chief Executive Officer
Mike Chupp, MD, grew up in Mooresville, Indiana, the oldest of six kids. As an Eisenhower Scholar, he graduated Summa Cum Laude with a pre-med degree from Taylor University in 1984, and then he received his medical degree as an AOA scholar from Indiana University in 1988.

During his fourth year of medical school, he volunteered for two months at Tenwek Hospital in Kenya where he met CEO Dr. Ernie Steury and Medical Director Dr. David Stevens. During his third year of surgical residency, God brought Mike’s high school sweetheart Pam back into his life, and they married in August 1991. A few months later, they traveled to Kenya and Tenwek Hospital in 1992 for two months where both enjoyed getting to know the Tenwek community while Mike was immersed in surgical care in a busy surgery referral center in rural Africa.

Mike completed a general surgery residency at Methodist Hospital in 1993 and then joined Southwestern Medical Clinic, a group in Southwest Michigan dedicated to global healthcare missions. Former CMDA and ICMDA president Dr. Bob Schindler and his wife Marian mentored Mike and Pam until their departure for Tenwek in 1996. Mike was board certified in general surgery in 1995 while working with Southwestern.

Mike was drawn to the orthopedic surgery service as Tenwek had no long-term bone surgeon. He was also named Medical Director in mid-1997. Tenwek grew remarkably during Mike’s tenure as surgeon and medical director to a clinical staff of over 80 physicians and clinical officers and more than 700 total staff. Training programs for interns, family medicine, general surgery and orthopedics were also developed and launched during those years.

Mike and Pam left for Kenya in August 1996 with two small children and added two more while at Tenwek Hospital: Steven, Melody, Kayla and Ashley.

In 2015, Dr. David Stevens invited Mike to consider returning to the U.S. to assume the role of CMDA Executive Vice President. After seven months of prayer and seeking counsel from mission leaders, mentors and close friends, Pam and Mike decided to leave their Kenya home and mission life of 20 years and moved to Bristol, Tennessee in July 2016. Mike has counted it an amazing privilege to serve alongside David Stevens and Gene Rudd and all the national CMDA staff for nearly four years. In September 2018, after an eight-month CEO search process, the Board of Trustees asked Mike to become the next CEO of CMDA and he began September 1, 2019, when Dr. Stevens stepped down. Mike’s life verses are from 2 Timothy 1:6-7: “For this reason I remind you to fan into flame the gift of God, which is in you…for God gave us a spirit not of fear but of power and love and self-control” (ESV). To God be the glory, great things He has done!


Jeffrey J. Barrows, DO, MA (Ethics)

Senior VP of Bioethics and Public Policy
Jeffrey J. Barrows, DO, MA (Ethics), serves as Senior Vice President of Bioethics and Public Policy for Christian Medical & Dental Associations. Dr. Barrows is an obstetrician/gynecologist, author, educator, medical ethicist and speaker. He completed his medical degree at the Des Moines College of Osteopathic Medicine and Surgery in 1978 and his residency training in obstetrics and gynecology at Doctors Hospital in Columbus, Ohio.

In 2006, he completed a master’s in bioethics from Trinity International University in Chicago, Illinois. Dr. Barrows was called out of full-time practice in 1999 to help administrate Christian Medical & Dental Associations’ Medical Education International (MEI) ministry. He served as the director of MEI from 2002 to 2005 before transitioning into the fight against human trafficking. He has dedicated 15 years of his career to fighting against human trafficking within the intersection of trafficking and healthcare, as well as the rehabilitation of survivors of child sex trafficking. Dr. Barrows has trained healthcare professionals on how to recognize and assist victims of trafficking within healthcare and has published numerous book chapters and articles. He has testified to the Ohio legislature on numerous anti-trafficking bills and is a speaker on human trafficking to the media, the church and in other venues. In 2008, Dr. Barrows founded Gracehaven, an organization assisting victims of domestic minor sex trafficking in Ohio. In 2014, he served as a member of the Technical Working Group on health and human trafficking under the U.S. Department of Health and Human Services’ Administration for Children and Families. In addition, he is a founding board member of HEALTrafficking. In 2020, Dr. Barrows published a novel entitled Finding Freedom that realistically portrays child sex trafficking in the U.S.


Jamey Campbell, CFRE

Chief Operating Officer
Jamey Campbell serves as Chief Operating Officer for CMDA. Jamey completed his bachelor’s degree at East Tennessee State University (ETSU) in communications. In his career Jamey served in several communications positions, including on the staff of Senior Majority Leader Senator Dr. Bill Frist.

He began his fundraising career at ETSU in leading the development effort for the Health Sciences Division before joining Precept Ministries International in 2000. Jamey and his wife Janeen live in Elizabethton, Tennessee, and they have two daughters and one grandson.

Senior Staff

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William Griffin, DDS
Vice President, Dental Ministries

A member of CMDA since dental school, Dr. Griffin has served on the Dental Advisory Council since 2013. He is a 1983 graduate of Virginia Commonwealth University School of Dentistry, and he has been practicing in Newport News, Virginia for 35 years. Dr. Griffin formerly served as Board Chairman and Dental Director at the Lackey Clinic, a Christian medical-dental clinic in Yorktown, Virginia. He averages four international dental mission trips each year, and he is passionate about opportunities to communicate the love of Christ to others, both domestically and internationally. Dr. Griffin is also a big fan of the Saline Solution/Grace Prescriptions conferences. He and his wife Linda have been married since 1983, and they have been blessed with two married children – Katherine and William, Jr., and one grandson – Barrett.

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Patricia "Trish" Burgess, MD
Director, Global Health Outreach

Patricia “Trish” Burgess, MD, joined CMDA as the Global Health Outreach Director in 2018. Trish went to the University of Georgia for her undergraduate degree. She took two years off before attending medical school and worked as a firefighter in Athens, Georgia during this time. She attended the Medical College of Georgia and did her residency in emergency medicine at the University of Missouri in Kansas City. With Global Health Outreach, Trish has traveled to Cambodia, El Salvador, Ethiopia, India, Kenya, Moldova and Peru. Each trip is a blessing in that she sees Jesus in the very people she comes to help. The body of Christ she knows has grown across the globe as she travels to seek and serve the least, the last and the lost.

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George Courtney
Vice President, Stewardship Development

George completed his bachelor’s degree at Liberty University in church ministries and Christian counseling. For more than 25 years, George has found much joy in helping families as they consider their personal stewardship. George served CMDA earlier in his career as the Director of Development and helping to organize the ministry’s first-ever capital campaign that allowed CMDA to build its current facility in Bristol, Tennessee. Before returning to CMDA, George served as the Vice President for Partner Engagement with Medical Benevolence Foundation.

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Susan Carter
Director, Human Resources

Susan Carter joined CMDA in 2003 to design and develop its newest department, the Center for Medical Missions. Susan was born in Kokomo, Indiana. She is a graduate of Olivet Nazarene University where she earned a Bachelor of Science in Nursing. In 1991, Ms. Carter earned a Masters in Public Health from The Johns Hopkins School of Hygiene and Public Health.

Prior to joining CMDA she was employed by World Gospel Mission for 23 years, spending almost all that time at Tenwek Hospital in Bomet, Kenya. Throughout her years at Tenwek she progressed from clinical nursing, to co-designing and then leading Tenwek’s community health program and eventually to the position as the hospital’s chief executive officer.

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Jonathan Imbody
Director, Federal Government Relations

Jonathan Imbody serves as Director of Federal Government Relations and directs the Christian Medical Association's Washington Office. As CMA's liaison with the federal government, he has participated in over 30 White House meetings and events and makes over 200 personal contacts with Congressional leaders and government officials each year. Jonathan testified on euthanasia and assisted suicide before a U.S. Senate committee.

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Michael Oldham
Chief Financial Officer

Michael Oldham joined the staff of CMDA in March 2013. He holds a master of accountancy degree from the University of Tennessee and has the professional designations of Chartered Global Management Accountant (CGMA) and Certified Public Accountant (CPA). He was previously CFO for 11 years with a Christian ministry headquartered in Chattanooga, Tennessee with a global focus, and he has been in the accounting field for 23 years. He is married to Pam and has four children, Paige, Anna, Rachel and Isaac.

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Bill Reichart, MDiv
Vice President, Campus & Community Ministries

Bill is an ordained minister within the Presbyterian Church of America. With more than 25 years of ministry experience, Bill recently was the Atlanta area director with CMDA before moving into his current role with the ministry. Prior to CMDA, Bill worked on staff with Campus Crusade for Christ for more than 16 years. Throughout the years, Bill has worked with college students at University of Rhode Island, UVA and Towson University outside of Baltimore, MD - his hometown. Bill earned his M.Div from Reformed Theological Seminary in Orlando.

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K. Scott Rimell
Vice President, Marketing & Digital Media

Scott is a graduate of Lindenwood University with a degree in Mass Communication. He was a director, editor, and producer of corporate television in the St. Louis area for 20 years before moving into digital medical publishing with Reed Elsevier; at the same time, adding website development to his skill set. In 2010 Scott was called to work with Precept Ministries International, serving for 6 years as Director of Marketing & Media. He has been with CMDA since late 2016 and is leading website development, email and social media, video technologies, and the marketing team.

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Margie Shealy
Vice President, Communications

Margie Shealy joined CMDA in 2002 with 22 years of experience in media and public relations. She was previously employed as the director of marketing and communications at Wellmont Health System in Kingsport, Tenn. Prior to Wellmont, she was the production manager for WJHL-TV, where she was responsible for all aspects of production for news, advertising and promotions. She is a graduate of East Tennessee State University, where she received a bachelor’s degree in Mass Communications and Speech. In 2012, she was inducted into ETSU’s Department of Communications Hall of Fame. She is on the Board of Directors for the National Embryo Donation Center and on the Advisory Board for the Patient Rights Action Fund.

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Doug Lindberg, MD
Director, Center for Advancing Healthcare Missions

Doug joined CMDA as the Director for the Center for Advancing Healthcare Missions in 2020. He and his wife Ruth are both family physicians. He graduated from Loyola University Chicago in 2003, completed his Family Medicine residency at Waukesha Family Practice Residency outside Milwaukee in 2006, and did a one year Rural Health Fellowship at East TN State University.

The Lindbergs served in Nepal as missionaries from 2009-13, and Doug served as the medical director at HDCS TEAM Hospital Dadeldhura. They returned to the US in 2013 for what was intended to be a one year furlough. But a series of events, including a life-threatening cancer diagnosis for Ruth, led them to permanently relocate back to Wisconsin. Ruth is now miraculously cancer free since 2015. Doug is thrilled to utilize his experiences as a healthcare missionary and family physician to advance the cause of healthcare missions! In addition to his work with CMDA, he continues to practice part time as an urgent care physician for ProHealth Care. They have two children, Maddie (2008) and James (2011).

Interested in Inviting Our Leadership to Speak at Your Event?

Thank you for your interest in requesting Dr. Mike Chupp, Dr. David Stevens, or Dr. Gene Rudd to speak for your event. Please note the following speaking requirements must be fulfilled to be considered for a booking:

  • Travel and lodging expenses paid in full to CMDA (arrangements for CEO will be made by his assistant.)
  • Minimum honorarium of $1,000 made payable to "CMDA"
Speaker Request Form
View Dr. Stevens' Speaking Schedule
Dr. Gene Rudd speaking