Dr. Harold Irwin Nachimson passed away at his home in Las Colinas in the company of his beloved family on June 25, 2018, just five days before his 90th birthday and only a few months after retiring from a 55-year medical career. Born in Brooklyn, New York, on June 30, 1928, Dr. Nachimson spent the next nine decades creating a rich tapestry of a life composed of threads of scholarship, service, devotion to those he loved, and faith. A recipient of both medical (M.D.) and law (J.D.) degrees, as well as a trained professional mediator, his passion for acquiring and sharing knowledge was equaled only by his sense of duty to community and country, which he served on land, on sea and in the air. Harold Nachimson's interest in medicine was sparked early, in part by the loss of an older sister from rheumatic fever. As a senior at Brooklyn's Lafayette High School, he received a statewide Biological Science Award. This was the inception of what is affectionately referred to as the "Nachimson medical gene," an allusion to the many family members in the health professions. He went on to receive a B.S. in biology from Long Island University in 1950; a master's degree in radiobiology and endocrinology from Rice Institute (now Rice University) in 1954; and an M.D. from the University of Texas Southwestern Medical School in 1963. His outreach extending beyond traditional health-care venues, Dr. Nachimson served as a health officer for the U.S. Bureau of Engraving and Printing (the U.S. Mint) in Fort Worth; and conducted pilot physicals for the Federal Aviation Administration. While helming a family medical practice, he also served as chief of staff of Irving Community Hospital, health officer for the City of Irving, and president of the Dallas chapter of the American Academy of Family Practice, and was named an honorary Irving fireman for training their paramedics. Dr. Nachimson's expertise in aviation was acquired while in the U.S. Navy in the mid-1950s and 1960s; his active duty included flying 14-hour patrols in P2V seaplanes along coastal China and the Philippines. His contributions at sea continued in the U.S. Navy Reserves and as ship's doctor for cruise lines. At an age when many begin retirement, avid interest in jurisprudence drew Dr. Nachimson back to academic pursuits, this time to earn a law degree. Later work as a mediator gave him the opportunity to put into action his deep respect for the traditions and perspectives of others, and his belief in the value of finding common ground among all. Though highly accomplished, he remained humble and grateful. He is survived by his wife of 64 years, Esther (Thurman) Nachimson, who he so loved, he married her twice, two weeks apart, in Brooklyn and Denison, Texas. Consequently, they celebrated two wedding anniversaries every year, claiming more than a century together. She was his first thought in the morning and his last as they drifted to sleep hand-in-hand. He is also survived by his son Dr. Joel Nachimson, daughter-in-law Alanna Gale, and their children Liberty and Greyson, of Conroe, Texas; daughter Beverly Nachimson of New York City; and nieces Jan Mercer, Jeanie Forsman and LouElla Thurman Dolloff. He was preceded in death by his parents, Abraham and Yetta Nachimson; and his son Dr. David Nachimson, who was father of his grandchildren Jeffrey, Natalie and Allison. Jeffrey's sons Jacob and Caleb are Dr. Nachimson's great-grandchildren. His legacy also encompasses a plethora of friends, neighbors, patients, colleagues, and a succession of informally "adopted" young people from around the world and across the street who have called the Nachimson house "home." Like Will Rogers, who famously saw something redeeming in every man, Dr. Nachimson was open and inviting to newcomers, even in times that predated access to Google vetting. He was the patriarch of a family where there is always room at the inn, whether one needs a holiday meal for a night or a bed for a year. And if one more chair at the table wasn't enough, there was always room for another table. He was also a boundless source of support and encouragement for others' pursuits and aspirations. "He said the only way to become a doctor is one step at a time," shares one young man he mentored. "He believed in me and that was very impactful." One other defining characteristic was his playful sense of humor. "He always made me smile," says granddaughter Liberty Nachimson. "He would use Scottish accents and do the famous iron claw. There are so many small and big moments with him to remember forever." "Even though he was very comedic, he was also extremely wise and smart, making sure I was doing well at school," says grandson Greyson Nachimson, a medal-winning swimmer. "He was always asking about my last meet, saying that I'm like Michael Phelps." Liberty and Greyson's mother, Alanna Gale, sums up the life well lived of her "father-in-love": "He was always loving and supportive and never afraid to show it a shining example of what a father should be, the rock of our family." Dr. Nachimson was a founding member of the Irving Jewish Fellowship. A private memorial celebration is being planned. In lieu of flowers, his family asks that donations be made to the Veterans of Foreign Wars, the Salvation Army, KERA, or any other charity of your choosing.