Marc was born in New York City February 6th, 1952, the eldest of four children to Alexander
 
 Steinberg and Jane Nickerson Steinberg, both progressive, hard working individuals. His father
 
 patented the first yogurt processing device in the US in 1946 and his mother was the first food
 
 editor for the New York Times. In 1956, the family relocated to Lakeland, Florida, across the
 
 street from the Skillman family. Alexander started his yogurt plant, eventually selling his patent
 
 and recipe to Dannon, and Jane was the food editor for the Florida Sun for nearly 40 years and
 
 author of “Jane Nickerson’s Florida Cookbook.” Marc spoke fondly of childhood memories
 
 working with horses and playing in wild Florida with neighborhood friends and his siblings. He
 
 later married his neighbor, Debra (Deb) Skillman Steinberg, in 1976.
 
 
 Marc attended Georgetown University. During a long drive home from college, DC to Florida,
 
 he had an unquenchable thirst, stopped nearly constantly to urinate and was then diagnosed
 
 with Type 1 Diabetes. This lifelong, 24-7 autoimmune disease sparked his interest in the
 
 medical field. His professional journey as a physician and pediatrician included developmental
 
 pediatrics and emergency medicine in North Carolina. Upon moving to Montana in 1993, he
 
 worked for the Indian Health Service in Lame Deer, MT, then practiced rural family medicine in
 
 White Sulphur Springs, MT until 2008. Marc's career path serving low-income and rural
 
 communities was driven by his belief that health care was a fundamental human right. Patients
 
 praised his personable bedside manner and clinical accuracy, however his most proud
 
 professional achievement came later from his work as an innovator and trainer in motivational
 
 interviewing for healthcare providers through Johnson and Johnson’s Diabetes Institute (JJDI)
 
 and his private consulting practice. The culmination of this work was in the publishing of his (and
 
 Bill Miller’s) book in 2016, “Motivational Interviewing In Diabetes Care.”
 
 
 Marc and Deb had a life full of interesting endeavors: born from Marc’s adventurous visions,
 
 achieved through plenty of hard work and with Deb’s unending patience and eye for
 
 organization and productivity. They enjoyed having an English mastiff (or 2) over the past 25
 
 years, their cabin in Sula where Marc proudly wired electricity to a beautiful new work shed, and
 
 trying their legs at skiing even after their grandkids left them in a trail of cold smoke. Family
 
 adventures included canoeing the Nantahala River and Falls in North Carolina (yes, the canoe
 
 flipped), winter camping with the wild horses at Grayson Highlands State Park, many horseback
 
 rides in Montana, and running the Sky Lodge Bed and Breakfast in WSS. Marc had memorable
 
 trips biking and kayaking in North Carolina, hiking and camping on Mount Edith, and long
 
 distance running with Don Babcock and Keith Alltucker in White Sulphur Springs. He remained
 
 an avid runner well into his 60s.
 
 
 Marc became “Poppop” when his first grandchild Mattie Jane was born in 2000, then joined by
 
 her siblings and cousins. He was doctor Poppop at times, a phone call away day or night with
 
 reassuring expert advice when a grandchild was sick or needed a quick fix up with a stitch or
 
 wound glue. Above all, he loved to make his grandchildren smile with silly jokes, a signature line
 
 (with moss on his head), “Has anyone seen my hair?” Over the years, he and Deb enjoyed
 
 many birthday parties, hikes, and family get-togethers. They traveled with their grandchildren to
 
 the desert in Utah, NYC, San Francisco, Florida, the Oregon Coast, and Seattle.
 
 
 Marc was diagnosed with advanced Alzheimer’s dementia in 2020. Although devastating, his
 
 diagnosis paved the way in new expressions through art. With the creative guidance of his wife
 
 and life partner, Deb, he spent many hours painting and creating art which brought him a new
 
 sense of adventure and joy. His good friend Beth Ammons worked with him in creating poetry,
 
 his artist statement, his involvement in Memory Cafe at the Missoula Public Library, and his
 
 library art tour. He loved visiting his art on display and with old friends in White Sulphur Springs
 
 in March 2022. Marc greatly enjoyed sharing writings at a living memorial October 14th, 2020,
 
 an intimate family gathering. Activities he enjoyed until the end of his life included therapeutic
 
 horses, guitar lessons with Chris Woodman, singing, listening to music, watching favorite
 
 concerts on dvd (volume up high!) with his good friend Steve Zellmer, and visits with friends,
 
 loved ones and dogs.
 
 
 Marc is survived by his loving, artistic wife of 46 years, Deb; son Peter; daughter Claire (Ben
 
 Tuholske); grandchildren Mattie, Shelby, Jackson Joshua, Eli, and Efraim; sister Alexandra
 
 Kaghan (Ted Macaluso), nephew Mark; brother Rick (Pam), niece Jamie; brother Josiah; half
 
 siblings Gerald (Kathy) and Evelyne Steinberg; and his beloved dogs Titan “Big Man” and
 
 Piglet.
 
 
 The family wishes to thank Missoula Aging Services for guidance and resources in navigating
 
 the dementia journey and Hestia Home Advantage for their support and exceptional presence
 
 during palliative and end of life care. Thank you to the friends and family who sent their love
 
 from afar and those that helped us locally during Marc’s final weeks and days.
 
 
 Donations in Marc’s honor can be made to Missoula Aging Services, Memory Cafe at the Missoula Public
 
 Library, Montana Youth Diabetes Alliance, Trotting Horse Therapeutic Riding, or Montana
 
 Alzheimer’s Association.
 
 
 Marc’s paintings will be on public display at the Livingston Public Library July 7th-August 7th.
 
 
 Arrangements were coordinated by Garden City Funeral Home.
 
 
 Condolences can be shared among family and friends at https://www.gardencityfh.com/obituary-
 
 listing