Health Teams International Leaders

Richard Charlick, D.D.S., M.S.

Dick is the president of HTI. Born and raised in Michigan, he attended Michigan State University for 3 years and University of Michigan for 7 years and received a D.D.S. and M.S. in Restorative Dentistry. He taught 1/2 time at U of M Dental School for 30 years while having a private practice 1/2 time in Brighton, Michigan. Dick accepted Christ as a young child and has been active and growing since. He started leading dental mission trips in the early 1980's and joined HTI in the early 90's becoming president in 2000. He has led over 45 health mission trips seeing several thousands of unreached people come to Christ. He enjoys serving in all areas of the world opening up new areas among the over 2 billion people who have never heard of Jesus.

Dr. Richard Charlick, DDS, MS
10056 Applegate Lane
Brighton, MI 48114
810-923-2223 (Cell)

Gayle Dawson B.S., R.N.

Gayle has been instrumental on many HTI missions in leading the pharmacy and treatment teams. She obtained her BS in Biology from U of Minnesota in 1974, BS in Nursing from U of Michigan in 1992 along with graduate work in Holistic Health at Western Michigan University. She got her AND in 1989 from Northwestern Michigan College. She has worked for Munson Medical Center, a top 100 Hospital, since 1989 in the cardiac care unit as well as the ICU. She is generally in charge of the unit when on duty, including working on the Medical Response Team and the Code Blue Team. In the absence of a physician, she is the team leader. She has been an ICU nurse in Michigan for more than a decade and has been on HTI teams to Africa, India and Sri Lanka.

Ms. Gayle Dawson, RN
4652 Briarcliff Dr.
Traverse City, MI 49684

Tom Harle, DDS

Obtained his BSc (1976), DDS (1980), Specialty training in Prosthetic Dentistry (1989) and a Masters degree (1990). He taught at the University of Toronto Dental Faculty, served at Toronto's Princess Margaret Cancer Hospital and worked with the Canadian Forces Health Services Branch as a clinical Prosthodontist. In addition to operating a full-time referral-based specialty dental practice he and his wife run a weekly inner city  “no-cost” denture clinic for the poor and homeless in Ottawa, Ontario. He has been President of HTI (Canada) since 2001 having participated in or led several HTI mission teams to South East Asia – including Nepal, Vietnam, Philippines, Sri Lanka, India, Burma, China and North Korea.

Dr. Tom Harle, B.Sc., DDS, D(Pros)
414-1335 Carling Avenue
Ottawa, ON  K1Z 8N8

William Johanson, M.D.

Bill is a family doctor from North Carolina that has been on many HTI teams to Sri Lanka, Myanmar and Cameroon as well as missions for his church, Global Health Outreach and for Samaritan’s purse. Bill graduated valedictorian from his high school and went on to obtain his bachelor’s degree from Princeton in New Jersey. His medical degree was from Vanderbilt University. Bill is involved with many ministries within his church and community particularly with the disadvantaged including prison ministry, community pregnancy center and rescue missions. Bill is one of the most tireless workers on medical teams and is often the first to lead us in prayer, song and worship.

Dr. William Johanson
2078 East Winds Avenue
Morganton, NC 28655

David McDonald, DDS

David lives in the beautiful Pacific Northwest and practices general dentistry in the small town of Sequim, WA. Dr. McDonald first started going on missions with his father and was introduced to medical missions and HTI. He was trained at the University of Washington Dental School. Dr. McDonald’s heart is to see people come to a saving knowledge of Jesus Christ as their personal savior. He has been on HTI trips to China and Tibet and is a co leader on missions into Cameroon, Africa as well as mission trips to Mexico and Central America.

Dr. David McDonald, DDS
16510 State Route 9 SE, Suite 102
Snohomish, Wa. 98296
phone 360-863-3921

Robert Miller, DDS
(deceased-April 2007)

Bob was the founder of HTI and was the Chairman of the Board in Tulsa, Oklahoma. He had visited 138 countries in his life, many of them searching for unreached people groups. As a professor and department chairman at the ORU School of Dentistry, he developed and taught the missions program at the school for eight years. During those years he built an inventory of portable dental equipment used by teams of volunteer dental students in 30 countries. Bob has been a team leader on dental missions to Belize, Brazil, China, Ghana, Haiti, India, Indonesia, Inner Mongolia, Israel, Jamaica, Mexico, Mozambique, New Zealand, Puerto Rico, Singapore, South Africa and Swaziland. He had also been the editor and publisher of two medical mission newsletters for 20 years as well as staffing a HTI booth on the average of three times yearly for 15 years. He is survived by his wife, Jan, who had been instrumental in all of Bob’s work and had been the secretary/treasuer of HTI from its inception. Although Bob will be greatly missed by the mission field, he lives on through this organization as well as the thousands of lives he has touched both here and in the developing world.

Gerald Roussie

Gerald  became involved with Health Teams International in the summer of 2000 through Dr. Tom Harle, President of the Canadian office of Health Teams International. Formerly a life-long educator at the secondary, community college, and university levels, he gained an interest in missions work through World Hope International, the missions branch of the Wesleyan Church. Working with a team to Bogota, Columbia he helped the local administration increase their computer expertise through the building, installation, and training in computer application. In Petit Guave, Haiti, he worked with World Hope in an assessment of a computer school that was set up under their auspices. As he became more involved in Health Teams International, he developed an expertise in doing eye refractions on the mission field. His training at the School of Optometry at the University of Houston not only provided him with the professional skills he needed to become a more valuable team member, but it also piqued his interest in the field of optometry. Since that time, he has helped team leaders provide optometric services in Sri Lanka, India, Benin, and Myanmar. In the summer of 2006, he will accompany a team to China and North Korea to serve as the Vision Station leader. Gerry has assumed the position of Executive Director of both the Canadian and American operations of Health Teams International. Psalms 137:4: How shall we sing the LORD'S song in a strange land?

Gerald L. Roussie
15 Stonepath Cr.
Stittsville, ON  K2S 1S4

Lee Wiggins, DDS

Lee resides with his wife, Edwina, in Carmichael, California where he is a general dentist. He has been involved with short term foreign missions for 20 years now. He trained at the University of California in San Francisco and did a General Practice residency at Keesler AFB in Biloxi, Mississippi. He has been in practice for 27 years and has been on missions to the Philippines, Mexico, Columbia, Ghana, China, India, and Cambodia during the last 13 years. He has concentrated most of his efforts recently in Cambodia.

Dr. Lee Wiggins, BA, BS, DDS
3501 Walnut Avenue
Carmichael, CA 95608

Dan Wiklund MD, DTM&H
Phone: 253-350-8769

Dan lives in the Puget Sound area of the Northwest and is board certified in Internal Medicine and Dermatology and has a diploma in Tropical Medicine and Hygiene (London). He has received awards as Teacher of the Year (Univ. of Washington Medical School) and Alumnus of the Year (Pacific Lutheran University). He has been on multiple mission outreaches with HTI and currently is leading teams into West Africa. He has also been on missions to Tibet, China, Mongolia, Philippines and India. Dan currently is in private practice in Puyallup, WA. and is a Clinical Professor of Medicine at the University of Washington Medical School. Dr. Wiklund believes that the Great Commission is a command and sharing our love and skills with a world in hurt is a personal obligation.

Dr. Dan Wiklund, MD
PO Box 731769
Puyallup, Wa. 98373
phone 253-350-8769

Roger Youmans, MD, FACS.

Dr. Youmans attended the University of Kansas as a Summerfield Scholar graduating Phi Beta Kappa after three years of study. He attended the University of Kansas Medical School and while a resident in surgery responded to an urgent call in 1961 to work in a bush hospital in war-torn Congo for six months. When he returned to the U.S., he completed his surgical training then studied French and Tropical Medicine in Belgium and was commissioned by the Methodist Church as a missionary to Congo. During four different periods of work in Africa he opened a mission hospital, served as chief of staff of the Kinshasa General Hospital in Congo, worked two years in the Manna Mission Hospital, and two years with the Africa Christian Mission in Ghana. He has led many short term medical mission teams in Africa.  When Dr. Youmans returned to the U.S., he served as assistant professor of surgery at the Kansas University Medical Center, head of international medicine and associate professor of surgery at Oral Roberts Medical School, and associate professor of surgery at the University of Oklahoma Medical School. Dr. Youmans also had a private surgical practice, hosted a Christian television program, has written on the integration of faith and medicine and is a sought after speaker. He currently serves on the Board of Directors of Health Teams International, Blessings International and United Front Against Riverblindness.  He is now retired, and with his wife, Beverly, live in Princeton, N.J.  His memoirs on the Congo are now available at

Dr. Roger Youmans, MD, FACS
371 Sayre
Princeton, NJ 08540

Dale & Mary Ann Louis 

Dale Louis is a 1966 dental graduate of the University of Minnesota, Vietnam Veteran 1966-67, and was in private practice for 30 years in Boulder, CO. Since retirement Dale has been on over 50 dental overseas mission trips. Mary Ann is a retired high school German teacher and now serves as Dale's all purpose dental assistant. She is currently enrolled in a Distance Learning study course through Fuller Seminary in Pasadena, CA. Dale and Mary Ann have worked with 8 different Christian mission groups. Dale and Mary Ann split their time between homes in Bonita Springs, FL, Breckenridge, CO and dental missions.

James K. Okamoto, MD
Phone: 808-677-8222

Board Certified in Family Medicine since 1995, and volunteering for medical service overseas since medical school, Dr. Okamoto has taught medical students and doctors in Uzbekistan, Morocco, and Afghanistan, and has done relief work in Sudan since 1999. Disaster relief includes leading teams in the Rwandan refugee camps, Kosovar refugee camps, and post tsunami relief in Sri Lanka. He also served on Mercy Ships in Guinea, West Africa and the Dominican Republic. In addition to his work at Ka Wai Ola Family Medical Clinic, he serves on the Board of Directors for Health Teams International (serving in Cameroon, Tibet, and Myanmar) and also on the Board of Medical Teams Worldwide (working in Haiti, Nicaragua, Sudan, and Kenya).

In 2005 he received Special Recognition for Outstanding Commitment to Medical Staff Excellence at Evergreen Healthcare, and in 2006 he received The (U.S.) President’s Volunteer Service Award for his volunteer work with Medical Teams International.

Tim Hiura, MDTimothy S. Hiura, M.D.
Phone: 808-677-8222

He is a graduate of University California, San Diego for his undergraduate degree and graduated from University of California, Davis School of Medicine. He then completed his three year residency at University of Hawaii, Family medicine Residency program. He was practicing at Haleiwa Family Health Center since 2006 and is now transitioning to Ka Wai Ola Family Medical Clinic. He has a heart for people and creating a comfortable environment for his patients. He also looks forward to volunteering a portion of his time to helping the poor and needy people around the world. Tim and his wife Tara, a registered nurse, have been on medical missions to Africa, Nepal and Haiti.

Joseph Nawrocki, M.DJoseph Nawrocki, M.D.

Dr. Nawrocki practices family medicine and emergency medicine in Arlington, Texas. He has led many outreaches bringing medical care and the Gospel to less fortunate in many developing countries. He often does a half dozen or more medical outreaches yearly through his organization Rocks Medical Outreach. Rock's Medical Outreach (RMO) dispenses love, compassion, and hope to the less fortunate through providing quality medical care, medicines, and medical supplies in the US and developing nations without charge. RMO strives to connect and assist with other organizations to combine resources toward the common theme of helping the uncared-for in the world. In the course of reaching out, RMO and other like organizations, hope to improve and change each life one person at a time, to aid and encourage each person in becoming improved productive members of their individual society.

Joseph Nawrocki, M.DDaphne Thomas MD, FACEP
Phone: 703-598-4069

Daphne Thomas, MD, FACEP, is a board certified emergency physician and a founding partner of Commonwealth Emergency Physicians, in the Northern Virginia / Washington, DC area. Daphne was born in India, grew up in Oman, where her parents were physicians and were used mightily by God to bring the gospel to many. At 16 she came to the US to go to Oral Roberts University, earning a degree in BioMedical Chemistry and then on to the Oral Roberts Medical School on a healing team scholarship. She completed her medical degree from the Medical College of Ohio in Toledo, OH. Her post graduate training included an Internal Medicine internship at The Georgetown University Hospitals in Washington, DC and residency in Emergency Medicine at The Johns Hopkins Hospitals in Baltimore, MD. Daphne has a passion for medical missions and has led many medical trips to countries like Cambodia, Laos, India, Tanzania, Ghana, Nicaragua, Columbia with trips planned to the Dominican Republic, India and Nepal. Daphne believes we are called to be the salt and light in our spheres of influence and to take God’s healing touch to the remote ends of the earth. Daphne has two daughters, the older of which has a rare neurologic disorder called Rett Syndrome. Some of her interests include church activities, travel for fun, interior design, reading and cooking. Dr. Thomas was invited to be on the Board of HTI in 2014, after the death of her father, Dr. Inderjeet David who was on the HTI board for several years.

John NgohJohn Ngoh

Associate Director for Africa at Health Teams International, Inc., volunteer at Victory Christian Center and Founder and President at Missions for Christ International Ministries. Studied Theology/Missions at Oral Roberts University, Wichita State University, and Cameroon College of Arts Science and Technology.

Elizabeth Martens

Elizabeth is the mother of two grown children and a California native currently living in Southern California. A graduate of West Los Angeles College in Culver City California with an Associate of Science in Dental Hygiene, Elizabeth practices as a Registered Dental Hygienist in multiple offices with a special emphasis in Pediatric and Holistic Dentistry. With a passion for Christ and serving the most needy people groups in the world Elizabeth has served with Heath Teams International since 2006 and has joined teams on short term missions to Benin, Uganda, Columbia, and Myanmar.

Gary MobergGary A. Moberg, D.D.S., MA (Theological Studies)
Phone: 651-426-3868

Gary graduated from the University of Michigan School of Dentistry in 1976. He and his wife, Lyndell, currently live in the Minneapolis/St. Paul, MN area after retiring from his private dental practice in Upper Michigan. They have been making short term mission trips since 1989. Upon his completion of an MA degree from Bethel Seminary, they have been pursuing more opportunities overseas to share the gospel of Jesus Christ with those who have never heard, while bringing dental care to those in need. Gary and Lyndell have four children and seven grandchildren.