Executive Committee
President: Mark Ranzinger, MD
Dr. Mark Ranzinger is a board certified surgeon,specializing in minimally invasive surgery, and currently practicing in Goshen, Indiana. Though Dr. Ranzinger has many honors to his credit, has published several articles in peer-reviewed journals, and has participated in a number of lectureships, the aspect of his medical service that he values the most, and speaks of most often is his service as medical director of two mission hospitals in Africa (Seventh-day Adventist Hospital, Ife-Ife, Nigeria; and Mugonero Hospital, Mugonero, Rwanda). What many do not know about Dr. Ranzinger, is that his undergraduate degree was in theology. Thus he has, since the beginning of his training, had a deep and abiding interest in combining the practice of medicine with the preaching of the gospel. His enthusiasm for medical-evangelism (both foreign and domestic) is indeed infectious, and he hopes to pass it on to every Seventh-day Adventist health professional. Dr. Ranzinger considers himself blessed to be married to Ruth. The couple has three children - Andrew, Aubrey, and Elliot.
Secretary: Edwin Nebblett, MD
Dr. Edwin Nebblett currently practices family medicine, serving two small clinics in Catron county, New Mexico. His passion for sharing the principles of good health is surpassed only by his desire to live and share the practical gospel. Dr. Nebblett and his family regularly speak at churches and campmeetings, helping families to embrace Jesus Christ as an ever-present help in life’s challenges. Edwin is married to Maria; the couple have four young-adult children whose joy it is to engage in ministry with their parents.
Treasurer: Todd Guthrie, MD, PC
Dr. Todd Guthrie is a board certified orthopedic surgeon, practicing in Mt. Shasta, California.
Dr. Guthrie sees AMEN as a catalyst to further facilitate the bringing together of the everlasting gospel of Revelation 14:6–12 and the Adventist health message. He firmly believes that medical missionary evangelism will open hearts in preparation for and in conjunction with the outpouring of God’s Spirit in the final days of earth’s history. Dr. Guthrie currently chairs the AMEN Media project subcommittee.
Dr. Guthrie, his wife, Patti, and their four children have been involved for years in ministry in their local church, and abroad. The Guthrie family especially enjoys doing music ministry together.
Board Members
Timothy Arakawa, MD
Dr. Tim Arakawa is an Internal Medicine resident at Kettering Medical Center in Kettering, OH. Dr. Arakawa has a strong interest in lifestyle medicine and its relationship to our unique health message. His special focus lies in training a new generation of doctors who will understand and embrace their crucial role in these last days of Earth’s history. Dr. Arakawa is also involved with other ministries such as GYC and AudioVerse. He is happily married to Sunny who works as a nurse in an ambulatory surgery center. Tim and Sunny are enjoying parenthood, having welcomed little Enoch into the world in September 2011!
Chester Clark, DDS
Dr. Clark specializes in applying the Adventist health message, including its spiritual component in his state of the art, biological dental practice in rural Arkansas. The Clark family has been used by God to help establish new churches and Ouachita Hills Academy and College. Dr. Clark is also actively involved in his community, serving as City Alderman for 18 years and as the mayor of Amity since 1999. In his spare time Dr. Clark and his wife Harriet enjoy their four children, three grandchildren, and nearly a hundred twenty students and staff at Ouachita Hills, in gardening, walking, aviation and studying God's word.
Timothy Howe, MD
Dr. Howe practices internal medicine in Brunswick, ME where he serves as Medical Director of Wellness and of Diabetes Education at Parkview Adventist Medical Center. His 10 day outpatient programs have helped hundreds to learn and apply biblical health principles. Dr. Howe is happily married to Lyn. The couple has had the joy of raising three sons.
Philip Mills, MD
Phil Mills, MD is a board certified dermatologist, but his passion for evangelistic work was kindled years before his medical training when, as a 14 year old, he read Ellen White's book, Evangelism. This passion was focused into a calling during his college years through reading the book Medical Ministry. Throughout his time as a clinician, Dr. Mills has always found his greatest joy in soul winning. For him, nothing else compares. One of the founders of AMEN, Dr. Mills is convinced that God is using this organization to catalyze a revival of medical missionary work that will impact outreach on every level - family, church, clinic, and community. He prays for the descent of the Holy Spirit upon medical evangelists all over the world to empower them to do their part in the finishing of the gospel commission.
The parents of three young adult children, Phil and his wife Sherry currently live in Blue Ridge, GA.
Carlos Moretta, DDS
Dr. Carlos Moretta started out in the dental hygiene field in 1992 in his home state of Michigan while taking prerequisite courses for Dental School. After completing his training as a Doctor of Dental Surgery in 2001 at Loma Linda University he worked briefly in private practice and was a part-time faculty member at Loma Linda University School of Dentistry. In 2009, Dr. Moretta completed post-graduate training in Oral and Maxillofacial Surgery at Loma Linda University as well. He is married to Dafne Moretta, MD who is preparing to begin her residency in internal medicine at Kettering, OH, where the couple will shortly transition.
Dr. Moretta has always been a missionary. In his first year of dental school alone, he went on 8 missionary trips including trips to Mexico and Brazil. Since then, he has gone on medical missionary trips to the Dominican Republic and also Bangladesh(which is his most recent project). He believes strongly in the church effort in the 10/40 window and has a passion to be a part of the generation that spreads the gospel worldwide and ushers in the the Lord's kingdom. AMEN holds these interests as foundation and that's why getting involved was a natural fit for him. In addition, Dr. Moretta has been active in getting young doctors and future doctors to plug into this ministry on the campus of Loma Linda University and plans to continue this work at Kettering.
Neil Nedley, MD
Neil Nedley, M.D., is a full-time practicing physician in Internal Medicine with emphases in Cardiology, Gastroenterology, Preventive Medicine, Mental Health, and the difficult-to-diagnose patient. Dr. Nedley is a highly acclaimed speaker and author. His seminars & publications focus on the relationship between nutrition, lifestyle, and health. His latest book, Depression—The Way Out explains his twenty week cure (no dependence on drugs or counseling) that has helped many feel great while achieving optimal mental performance. Dr. Nedley has a passion for soul winning. He has been instrumental in the baptism of 6 patients and one employee. Dr. Nedley hopes AMEN will help physicians and dentists increase their emphasis on combining acute medical work with lifestyle medicine for the purpose of saving souls. Dr. Nedley, his wife Erica, and their four sons are currently in transition to northern California, where he has taken on the role of president of the Weimar Center for Health and Education.
Brian Schwartz, MD
Dr. Brian Schwartz is an interventional cardiologist, practicing in Kettering, OH. As a medical student, he struggled with his faith, nearly coming to the point of giving up. He was reclaimed through a deeper understanding of the meaning of Christ's sacrifice and its implications for his personal life. Having recovered, Dr. Schwartz still struggled for years with the nagging conviction that medicine was supposed to be more than just a job. He longed to make his medical work a healing ministry. His association with AMEN has helped his integration of Christian spirituality into his practice to become more intentional and to feel more natural. His joy is to share with his patients the message that has so touched his heart.
Dr. Schwartz serves as the editor of The Medical Evangelist, AMEN's journal. He and his wife, Internist Lyndi Schwartz, MD are a powerful ministry team in the Dayton, OH area.
Raja Tooma, MD
Dr. Raja Tooma is board certified in Family Medicine. She currently practices in Fontana, California and serves as Medical Director/President of United FamilyCare. Dr. Tooma has a passion for Christ and for sharing His love with her patients! She is also dedicated to overseas missions. Dr. Tooma joined the AMEN board in 2006. She was inspired by AMEN's first conference held in San Diego in 2005. Since that time she has been praying with almost all her patients! God has worked many miracles through Dr. Tooma's willingness to follow His leading not only in her personal life but in her professional life as well.
Lisa Walke, MD
Dr. Lisa Walke is board certified in Internal Medicine and Geriatric Medicine. She is an Associate Professor at the Yale University School of Medicine and Associate Chief of Geriatrics for Yale New Haven Hospital. Dr. Walke developed an interest in medical missionary work during her fourth year at the Mount Sinai School of Medicine but she did not act upon her interest until an appeal was made during the 2006 AMEN conference. As a result of her participation in AMEN, Dr. Walke has participated in short term missions to SDA Hospital, Ile-Ife, Nigeria and Hospital Adventista, Valle de Angeles, Honduras. She was also instrumental in organizing a medical mission trip to La Romana, Dominican Republic for Yale medical, nursing, and public health students. Having been inspired during several AMEN conference sessions to combine medical and gospel ministry, she has begun partnering with her pastor to conduct outreach efforts in Connecticut. Dr. Walke believes God will continue to use AMEN to empower and equip health care professionals to present a message of health and healing at home and abroad.
Stephen Waterbrook, MD
A 2004 graduate of Loma Linda University School of Medicine, Dr. Waterbrook completed his General Surgery Residency at Northeastern Ohio Universities College of Medicine in Akron. He is a Fellow of the American College of Surgeons and is certified by the American Board of Surgery. Dr. Waterbrook serves as a Clinical Assistant Professor of Surgery for Wright State University School of Medicine as well as on the Physician Hospital Alliance Group Benefits Board of Directors, at Good Neighbor House and on the Kettering Health Network Cancer Committee. But beyond these professional and personal activities lies a passion to make "each work of healing an occasion for implanting divine principles in the mind and soul" of every patient. Ministry of Healing, p. 20.
General Conference Advisor: Mark Finley, MA
Pastor Mark Finley has been involved in Christian ministry for more than 35 years—preaching, teaching, offering spiritual growth workshops and presenting healthful lifestyle lectures. He currently serves as a special assistant to the president of the General Conference of Seventh-day Adventists. Finley has had a passion for medical evangelism since the beginning of his ministry. He often partners with physicians who conduct health lectures as a part of his evangelistic meetings. Pastor Finley says of AMEN, “The New Testament presents a Jesus who is interested in the physical, mental, spiritual and emotional aspects of life. AMEN offers physicians and dentists an innovative opportunity to follow in the footsteps of the master.” Pastor Finley serves as General Conference Advisor to AMEN's board of directors. He is married to Ernestine, his partner in life and ministry; the couple has three adult children.