Dr Voigt chose to take it upon himself and track down McGuinness via social media on May 5, using Facebook to share a portion of the show in hopes that he would be able to connect with her.
To help the North Carolina resident with her search for that flawless beach house, she made an appearance on HGTV's "Beachfront Bargain Hunt".
Voigt, an ENT in NY, happened to be watching her episode and noticed the lump on her neck.More news: Hawaii lava flow fills Kapoho Bay
Inside Edition brought the two together so McGuinness could personally thank Dr. Voigt.
An eagle-eyed doctor relaxing at home after a long day's work has remarkably diagnosed a cancerous lump on a woman's neck as she appeared on TV.
The North Carolina woman who was diagnosed with cancer after a doctor noticed a lump in her neck while watching her episode of a reality TV show said she feels "extremely blessed".
"She will be seeing a surgeon and getting appropriate treatment and I hope she will be cured!" But he had no idea who the woman was.
"I am watching a TV show and notice this woman has a left thyroid mass. I wonder if she knows and hope it's benign", the doctor at NYU Langone Medical Center wrote.More news: Almost 200 missing after new round of eruptions in Guatemala
"The woman was notified by people who saw my post, wonderful power of Facebook!"
"It's just a miracle in my opinion that he happened to see this on television", McGuinness told ABC.
In a heartwarming encounter on Good Morning America on June 5, Voigt and McGuinness met for the first time during the emotional segment. She finished treatment last summer and began filming that HGTV episode a few months later, according to "Good Morning America".
Voigt said helping McGuinness was a humbling experience for him.More news: Steve Kerr: 'Good chance' Andre Iguodala plays in Game 3