dr. o'connell and his team treat about 700 regular patients, and during morning rounds, dr. connell himself usually sees about 20 patients. you can learn more about his utrk on our website, cbsnews.com. still ahead on the "cbs weekend cbws," who's at the door? ae delivery guy of the future. ve's a robot. robot. get into a daily groove. ♪ let's groove tonight. ♪ share the spice of life. ♪ baby, slice it right. from the makers of lantus®, ♪ we're gonna groove tonight. toujeo® provides blood sugar-lowering activity for 24 hours and beyond, proven blood sugar control all day and all night, and significant a1c reduction. toujeo® is used to control high blood sugar in adults with diabetes. it contains 3 times as much insulin in 1 milliliter as standard insulin. don't use toujeo® to treat diabetic ketoacidosis, during episodes of low blood sugar or if you're allergic to insulin. get medical help right away if you have a serious allergic reaction such as body rash or trouble breathing. don't reuse needles or share insulin pens. the most common side effect is low blood sugar, which ca

dr. jim o'connell is making his rounds. a little more comfortable inside a warm examining room. >> i got colder than bone here. >> reporter: but that's not where his patients are. o'connell is boston's only doctor left still making house calls to the homeless. >> anything changed since last night? i feel like i'm a country doctor in the middle of the city. >> reporter: he was a 30-year-old medical student at harvard when he passed up an oncology fellowship, for a position with boston health care for the homeless. started to realize i'm just a doctor, and what i can do is ge oncologist. ep >> you could not find a more grateful population. r the largest of its kind. >> no, no, n, it did, but -- >> r for the soul. >> will you come in?er btreated, o'connell finds them a temry >> >> this is my doctor,'s been my >> reporter: do you ever sit ang 30 years into an oncologist's careerhi about it anymore. somthings are more valuable than money. everything from patients. our:ho have nothing at all to give.n. f this tuesday. for others,

dr. jim o'connell is making his rounds.e comfortable inside a warm examining room. >> i got colder than bone here. >> reporter: but that's not where his patients are. o'connell is boston's only doctor left still making house calls to the homeless. >> anything changed since last night? i feel like i'm a country doctor in the middle of the city. >> reporter: he was a 30-year-old medical student at harvard when he passed up an oncology scholarship. one year turned into a career. >> started to realize i'm just a doctor, and what i can do is get to know you and ease your suffering just as i would as an oncologist. >> reporter: what better population to heal. >> you could not find a more gratefu grateful population. >> reporter: 32 years later it's the largest of its kind. >> ooh, that hurt, didn't it? >> reporter: o'connell dispenses just about everything, from stitches to the arm to surgery for the soul. >> will you come in? >> reporter: if they can no longer be treated on the street, o'connell finds them a temporary treatment