Robert John Koval, MD [Dr. Bob], 86, a devoted husband, loving father and proud grandfather, passed away peacefully June 30, 2020, at his home in Dallas, Texas, with his wife by his side until the end. He had been in hospice care for the last 3 years battling the last stages of Alzheimers disease.Dr. Koval was born in Blaine Lake, Saskatchewan, Ontario, Canada on June 5, 1934 to John and Julie Koval, immigrants from Russia finding freedom in Western Canada. He was raised as the son of a minister and the youngest child having 2 older sisters, Lillian, and Joyce. He never left his hometown until attending the University of Saskatchewan where he obtained a Degree in Pharmacy. As a Canadian Forces Reserve, he moved to Elliott Lake, Ontario where he met and married his wife of 60 years, Yvonne. They were married on June 25, 1960 and were inseparable. Bob later attended medical school at the University of Ottawa and moved to Minden, Ontario, to serve as the towns only doctor for the next 20 years. He was known as the Marcus Welby MD of his time, making house calls in the middle of the night and being constantly on call. It was his passion, along with golf. Many would be surprised to learn that his first love was illustration and drawing, and that he served as University cartoonist. He was also an avid reader and iconic movie watcher. On his days off, you would find him with a book.Bob and Yvonne had 1 daughter, Carolyne, and together, moved in 1981 to Dallas, Texas to advance his family practice. He didnt miss the cold winters, but he did miss hockey!Dr. Koval retired at the age of 80 with a life-long career dedicated to taking care of his cherished patients. He was a consummate professional that treated everyone with dignity and respect. He was kind, gentle, and wonderful listener. It was not rare for patients to sometimes just stop in to talk, being known for his dry humor and always leaving you with a smile. He was also open to all avenues of healing including a yearlong trip to China with his family to learn the ancient art of Acupuncture.Dr. Koval was not loud about his faith but he lived it in service to others, every day of his life. He was loved and respected by an immeasurable number of patients, friends, and family in both Canada and Texas.He was preceded in death by his parents and sisters, and is survived by his devoted wife Yvonne Koval, his loving daughter Carolyne Koval Davis, his son in law Matthew O. Davis, and their 4 children [his grandchildren], Mattey, Max, Molly and Madelyne.All services will be held privately and with immediate family only, dueto the Covid epidemic and the fragile health of his wife.Please leave the family condolences and share memories on this website.