Who We Are, We Remember

Dr. Mia Lee is a retired internist and a former hospitalist who now serves as the medical director of a free clinic where she has volunteered for over a decade. She keeps her medical license and board certification active to continue participating in medical mission trips with her church and GMMA. She was a founding member of KAMHC, now known as GMMA. She values serving alongside Christian medical professionals committed to compassionate care and faithful service. She continues to find great encouragement in seeing GMMA students grow in their faith and professional paths. Dr. Lee lives in Seattle with her husband, Jason. They have two married adult children and two granddaughters. Their daughter Jessica and her husband are missionaries serving with Pioneers in Orlando, Florida.

Dr. Sang Hoon Ahn is a medical oncologist at the University of Southern California (USC). He serves as the Director of the Postgraduate and Young Professionals Ministry of GMMA (Global Medical Missions Alliance). Dr. Ahn’s vision is to raise the next generation of health professionals who live out a Christ-centered, missional life in their workplaces, communities, and to the ends of the earth.

Dr. Eunice Lee is an orthodontist who has practiced in the Denver area since 1999. She earned her B.S. in Biology from MIT, her dental degree from Harvard School of Dental Medicine, a master’s in public health from Harvard School of Public Health and completed her orthodontic specialty training at Saint Louis University. Dr. Lee has participated in mission trips to Mexico, Cambodia, Honduras, and China. She currently serves on the GMMA Board as Treasurer, actively joins mission trips with students and professionals, and faithfully supports GMMA alongside her husband, Dr. Chuck Lee, the Central South Regional Director.

Kelly Choi joined GMMA in 2015 at the request of her husband, David Choi (GMMA Mission Director), to support administrative needs and conference coordination. Over the past ten years, she has witnessed God’s faithfulness in strengthening GMMA’s multigenerational medical mission family. She currently assists with mission trip preparation, coordinates the monthly GMMA National Day of Prayer, and oversees the monthly GMMA newsletter.

Joy Kim is a dedicated GMMA staff member who has served faithfully for since 2015, grateful to witness God’s presence in the ministry and to work alongside prayerful, Christ-centered leaders. She also teaches 7th-grade girls in the Junior High ministry at Bethel Korean Church in Irvine, California, where she loves guiding young hearts toward Christ. In addition, Joy trains 28 group leaders in Bible Study Fellowship (BSF), helping them grow in their walk with God. She treasures God’s Word and is thankful for the renewed heart He has given her to know Him more through Scripture.

Dr. Michelle Pae Lee is a board-certified anesthesiologist with over 24 years of clinical experience, currently practicing at Kaiser Permanente in Southern California. She is deeply committed to excellence in patient care and passionate about integrating faith, mentorship, and service into her professional and personal life. Beyond her medical career, Dr. Lee devotes much of her time to medical missions, Christian education, and mentoring the next generation to serve in God’s Kingdom.

Dr. David C. Choi, GMMA Mission Director and West Coast Director, is an Elder at Sa Rang Community Church. He earned his medical degree from Rush Medical College in Chicago and a bachelor’s degree in computer engineering from the University of Illinois at Urbana-Champaign. After a distinguished career as an Oncologist and Hematologist, Dr. Choi retired from Kaiser Permanente. He now devotes his time to mentoring and leading medical professionals and students in missions through GMMA.

Dr. Paul Jo earned his B.A. in Biology from the University of Texas at Austin in1986, followed by his M.D. from the University of Texas Southwestern Medical School. He completed Internal Medicine internship at UT Southwestern and Parkland Hospital, then pursued Urology residency at the University of Tennessee in Memphis from 1991 to 1997. Dr. Jo has been in a private urology practice in Florida since 1997 and currently serves as the GMMA Regional Director for the East Coast region.

Dr. Charles Lee is a retired, board-certified internal medicine physician who currently serves as the Central South Regional Director for GMMA. A graduate of the University of Michigan and Oral Roberts University School of Medicine, he began his medical mission journey in 1987 as an intern at the Baptist Mission Clinic in Macau. Since then, he has participated in medical and church-planting projects in Cambodia, Thailand, Honduras, and Mexico. Dr. Lee and his wife resides in Lakewood, Colorado and enjoys playing pickleball and mountain biking.

InYoung Kim, MD, PhD, is a double board-certified dermatologist and micrographic dermatologic surgeon in Chicago. She earned her MD and PhD from the University of Chicago and completed her dermatology residency at Case Western Reserve University. Trained in integrative dermatology and certified as a holistic health coach, she incorporates innovative, evidence-based, and whole-person approaches to care. With a PhD in Immunology focused on the gastrointestinal immune system, she emphasizes the vital link between gut and skin health. A dedicated philanthropist, Dr. Kim invests her time in medical missions and mentoring through the Global Medical Mission Alliance. She lives in Chicago with her husband and son.

Dr. Tae Kyoung Kim is a Professor of Radiology at the University of Toronto and a Staff Radiologist at Toronto General Hospital, specializing in abdominal imaging. A recognized expert in hepatobiliary and pancreatic imaging, he has authored more than 280 peer-reviewed publications advancing tumor diagnosis and understanding. In addition to his academic and clinical work, Dr. Kim is active in faith-based and humanitarian service. He is an elder at Milal Church and serves as a director for several charitable organizations, including Love Toronto, NAFEC Canada, Happy Together, Christian Vision for Unity, and GMMA. He has also participated in medical mission trips to Haiti, North Korea, Bolivia, the Dominican Republic, and Ethiopia.

Dr. Mary Roh is a retired pediatrician who serves GMMA as the Director of Education and the Director of the biennial GMMA National Medical Missions Conference. She also serves as the Academic Affairs Director for JIMCC, a teaching program for North Korean medical students in Jilin, China. Dr. Roh is devoted to equipping the next generation to live a Christ-centered missional life. She is blessed with three grown children and four grandchildren.

Nak Yong Choi is a Korean American creative and animation director based in Los Angeles, known for blending heartfelt storytelling with innovative visual design. As an executive board member and creative director for GMMA (Global Medical Missions Alliance), he leads design and media initiatives, mentors creatives, and documents mission work that provides free healthcare around the world. Nak also serves as Chief Creative Officer of UnicornPerform and the National StartUP League. His industry experience includes directing for Netflix and Disney, pioneering XR projects at Walt Disney Studios, and offering story consulting for League of Legends: Arcane Season 1. On weekends, he volunteers at Seesaw Café, a nonprofit supporting adults with developmental disabilities. Born in Seoul and raised in Hawaii, Nak brings warmth, purpose, and vision to every story he creates.

Donghoon Choi founded Cconma, Inc. in 2005 and Cconma USA in 2009 and currently oversees operations in both Korea and the United States. A graduate of KAIST with a degree in Computer Science, he began his career at Samsung SDS. At Cconma, he leads a story-driven e-commerce vision that honors the passion and craftsmanship of producers. Most recently, in November 2024, he founded the nonprofit organization Kingdom Planet, through which he supports Christian individuals and organizations, including GMMA, in navigating digital transformation and advancing the mission of evangelizing the digital world.