It's rare to find a doctor these days who makes house calls. But what about a doctor whose house calls take him thousands of miles away to one of the poorest parts of the world, and doesn't even get paid?

Meet Dr. Likith Reddy, an oral and maxillofacial surgeon at the University of Cincinnati Medical Center. Dr. Reddy has a practice in the United States, but once a year he travels to his hometown of Hyderabad, India, to do what few surgeons would: offer his services for free to the indigent and the underserved.

"If you go once and you help people, I think it's kind of addictive; you feel like going back and helping again and again. It gives you this good feeling that you just want to keep doing it. And I hope that never goes away."

We asked Dr. Reddy about two of the patients he operated on in the show — 22-year-old Suresh Bassagani and 18-month-old Sania Anju — to find out how they are doing:

"Suresh's outcome is pretty good but he still needs one more surgery," says Dr. Reddy, "because his eye is still a little bit behind than what we want it to be ... He is not opening his eye completely ... and so he requires a little bit more grafting of this area of the bone so his eye will project out a little more forward."

"She [Sania] is going to look great. She is all done. That is a one-time surgery and she should be great for the rest of her life."

One of the most intriguing parts of the show were the crude instruments Dr. Reddy and his childhood friend, Dr. Srinivas Gosla Reddy, use at the GSR Institute. One tool looks more like something a carpenter would use rather than a surgeon.

"It's called a Gigli saw and in the U.S. it's used for amputations and stuff like that. I have not seen that being used, to be honest, in neurosurgery in the United States ... that was the first time even I'd seen it."

Performing no-cost surgeries to patients who otherwise would not get them is something Dr. Reddy would like to spend more time doing. He is even considering serving with Doctors Without Borders for a few months because India, he says, is not the only country where people are in desperate need of expert surgeons.

"Who knows, maybe 10 years down the road they'll say, 'Hey, because of you my life changed.' That's what I want to hear. That would be the most satisfying thing."