As disease raced through her body, Ruby suffered unrelenting pain for years. Her hands and feet burned with neuropathy. High blood pressure made her dizzy. She wound up more than once in a hospital emergency room, where doctors hooked her up to an IV to send insulin into her bloodstream, lowering dangerously high blood sugar levels. She didn’t know she had diabetes. Unfortunately for Ruby, who cleans businesses for a living, the diagnosis didn’t come with a way to pay for the medications she needed — one alone cost nearly $500 a month. (Ruby is an undocumented immigrant from Mexico, so The Star is identifying her only by her first name.) She’s the patient John Yost had in mind when he decided to open a charitable pharmacy in Kansas City, Kansas, for people who can’t afford their prescriptions. At Pharmacy of Grace, prescription medications are offered at reduced prices to low-income, uninsured or underinsured patients, while breaking down language barriers that sometimes stand in...