While attending medical school, he aspired to become a revered, old-fashioned and much-likable Marcus Welby-type doctor. When caring for his patients, Dr. Walker embraces the Goldilocks principle of health care, which involves developing customized treatment plans for e Being part of his patient's lives is highly rewarding for Dr. Walker, who holds dear to his heart several highlights in his career: a child running down the hallway toward him to deliver a hug, a daughter thanking him for caring for a parent and an elderly patient smili