EXTEN Team
Ryland Mauck-Duff, BSN, RN CEO
Brent Russell, MD Medical Director
Brent Russell, MD Medical Director
Raised in Cabot, Vermont, a small town known for its cheese, Ryland was home schooled by free-thinking parents who saw no need for running water. He became an entrepreneur at the ripe old age of 13, launching a statewide skiing publication. Ryland attended Idaho State University, graduating as a member of the nursing honor society Sigma T
Raised in Cabot, Vermont, a small town known for its cheese, Ryland was home schooled by free-thinking parents who saw no need for running water. He became an entrepreneur at the ripe old age of 13, launching a statewide skiing publication. Ryland attended Idaho State University, graduating as a member of the nursing honor society Sigma Theta Tau. After working as an emergency nurse at St Luke’s Wood River Medical Center, Ryland returned to his entrepreneurial roots, founding Elevated Hydration with Dr. Brent Russell. They built a niche medical business in Ketchum, Idaho, providing IV hydration and vitamin therapy. As the business grew they looked to expand to other regions of Idaho and rebranded as Exten IV. As CEO Exten, Ryland is excited to bring the benefits of IV therapy to communities throughout Idaho.
Brent Russell, MD Medical Director
Brent Russell, MD Medical Director
Brent Russell, MD Medical Director
Born in Chattanooga, Tennessee, Brent first went skiing in the Rocky Mountains at age 14 and became a hopeless addict. In 1997 he graduated from med school and moved to Portland, Oregon for his Emergency Medicine residency. He then worked for over a decade at Providence St Vincent Hospital, the busiest emergency department in Oregon. But
Born in Chattanooga, Tennessee, Brent first went skiing in the Rocky Mountains at age 14 and became a hopeless addict. In 1997 he graduated from med school and moved to Portland, Oregon for his Emergency Medicine residency. He then worked for over a decade at Providence St Vincent Hospital, the busiest emergency department in Oregon. But the Rocky Mountains continued to call him and he moved to the Sun Valley area in 2011. He is a dad, skier, kiteboarder, mountain biker, Dj and author, publishing two books since moving to Idaho and occasionally writing a guest column in the Idaho Mountain Express. He is passionate about helping people become the healthiest, happiest human beings they can be.
Susan Lahart, BSN, RN
Brent Russell, MD Medical Director
Susan Lahart, BSN, RN
Susan has been a nurse for 29 years, working in critical care for most of her career. She began her training at 16 as a nursing aide in Manitoba, Canada. Susan and her husband have two teenage children and a dog, keeping her busy outside of work.
Shaheen Jamal, BSN, RN
Mariejhun (MJ) Guemo, RN
Susan Lahart, BSN, RN
Born in the Fiji Islands, Shaheen moved to the US with her mother and older sister to pursue the American dream. She attended Boise State University and College of Western Idaho for her nursing degree, graduating with honors. Shaheen has worked in emergency nursing for 7 years. She loves traveling and trying new things that life has to of
Born in the Fiji Islands, Shaheen moved to the US with her mother and older sister to pursue the American dream. She attended Boise State University and College of Western Idaho for her nursing degree, graduating with honors. Shaheen has worked in emergency nursing for 7 years. She loves traveling and trying new things that life has to offer. Family is an essential part of everything she does, taking care of her mother and helping out with her sister’s three beautiful kids.
Amber Edlin, RN
Mariejhun (MJ) Guemo, RN
Mariejhun (MJ) Guemo, RN
Amber grew up in a small town in southern Indiana. She has been a nurse for 11 years in mental health and in emergency medicine. She takes great pride in her IV skills. Amber made the move to Idaho in 2020 and loves living here! She lives with her daughter and their dog. She enjoys escaping to the mountains with her family, reading, and h
Amber grew up in a small town in southern Indiana. She has been a nurse for 11 years in mental health and in emergency medicine. She takes great pride in her IV skills. Amber made the move to Idaho in 2020 and loves living here! She lives with her daughter and their dog. She enjoys escaping to the mountains with her family, reading, and helping the community through her church and volunteer opportunities.
Mariejhun (MJ) Guemo, RN
Mariejhun (MJ) Guemo, RN
Mariejhun (MJ) Guemo, RN
MJ was born in the Philippines and then lived in Northern California. As a nurse for over a decade, she has experience in several fields, but finds that the ER is where her heart belongs. From a military family and then as an active duty member, she’s experienced many cultures and has lived in Germany and Japan. She loves traveling, spend
MJ was born in the Philippines and then lived in Northern California. As a nurse for over a decade, she has experience in several fields, but finds that the ER is where her heart belongs. From a military family and then as an active duty member, she’s experienced many cultures and has lived in Germany and Japan. She loves traveling, spending time with her family and cooking. She is excited to be a part of the Exten IV team.
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