Since August, Krier has spent every Tuesday as a case management volunteer at BHCHP, accompanying patients to medical appointments and on all sorts of errands — to government offices, banks and pharmacies.

Editor’s Note: The following was submitted by Boston Health Care for the Homeless Program.

It’s 9 a.m. on a recent Tuesday, and Mimi Krier has just arrived at Boston Health Care for the Homeless Program in the city’s South End. As usual, she’s hauling a large, black nylon bag filled with neatly folded donated clothes she regularly collects from friends and family. Krier checks in with the nonprofit’s case managers to get her morning assignment.

Today, she’ll be accompanying three patients to the Social Security office to get new cards. Theirs have been stolen, a common occurrence when you live on the streets or in a shelter. Before she gathers the patients into the waiting white van, she drops by the room of one of her favorite patients, Mary, to say “hi” and to deliver a pair of athletic shorts she’s set aside for her. They hug, and Krier, a petite woman with salt and pepper hair and a quick smile, is off.

Since August, Krier has spent every Tuesday as a case management volunteer at BHCHP, accompanying patients to medical appointments and on all sorts of errands — to government offices, banks and pharmacies. But she’s so much more than an escort: she’s a helper with onerous paperwork, a dispenser of chocolate when spirits slump, a problem-solver and most importantly, a sympathetic ear.

“She’s the best,” says Jeff, who has been a patient at BHCHP’s 24/7 medical respite facility, the Barbara McInnis House, for 3 1/2 months for a variety of medical conditions, including a heart arrhythmia. “Mimi is hands-on, goes above and beyond her duties. I see her concern for us. She does this work from her heart.”

“I feel called to do this,” said Krier, who has lived in Sherborn for 25 years, raising three children with her husband Bob, who works from home on Tuesdays to take care of their bulldog, Baxter. “It has been so humbling and enjoyable to get to know these patients. I am amazed at how open they are and how many of them tell me their stories.”

In the van, a couple of patients take out their phones to share photos of their loved ones with Krier. One of them, Sean, who is recovering from the amputation of his left leg, tears up as he shares the story of his wife’s death.

Krier and her family have always cared deeply about homelessness. For years, they have supported a New York City-based homeless nonprofit, The Breadline, and one year she ran the New York Marathon to raise funds for it. They have cooked and served meals for homeless families and done numerous clothing drives. In the past couple of years, as Krier learned more about the opioid overdose crisis, which has disproportionately affected homeless individuals, she felt compelled to do more. She found out about BHCHP through a friend from her church, St. Theresa/MPB Parish, researched the nonprofit, and decided to volunteer.

Krier fell in love with BHCHP’s mission, which is to compassionately care for homeless men, women and children wherever they find themselves: on the streets, under bridges, in shelters and in hospitals. The 33-year-old nonprofit provides behavioral and medical health care to more than 11,000 patients each year at 45 sites, including Massachusetts General Hospital, Boston Medical Center, the Pine Street Inn, St. Francis House, Rosie’s Place and Bridge Over Troubled Water.

The Barbara McInnis House, where Krier works, is one of the organization’s two medical respite facilities, for patients who are too sick to live on the streets or in shelters, but not ill enough to require hospitalization.

“I am so inspired by the BHCHP staff — from the doctors to the nurses, the case managers to the social workers, the security guards to the van drivers and the administrative staff who make the whole place tick,” said Krier.

By the end of her shift, Krier has completed a successful run to Social Security, helped several patients fill out applications for drug treatment programs, and delivered clothes to four others.

“Every interaction offers a great opportunity to connect,” said Krier.

It’s been another terrific day and by 4:45 p.m., Krier is on the commuter train, heading back to Sherborn.

For more information about Boston Health Care for the Homeless, visit, www.bhchp.org. To learn about volunteer opportunities, email volunteer@bhchp.org.