The 61-year-old former talk show host's rep, Jonathan Franks, tweeted out a statement on Thursday, revealing that Williams had been admitted to a hospital after an apparent strenuous workout.
"Anyone who knows Montel knows that he is an exercise enthusiast. Yesterday, he overdid it, and has been admitted to the hospital out of an abundance of caution," Franks wrote. "He is doing well and anticipates being discharged soon."
The statement concluded: "The Williams family will be forever grateful for the quick response from [New York City Fire Department] and the excellent care he has received."
A father of four, Williams was diagnosed with multiple sclerosis, which affects the central nervous system, in 1999. According to the Mayo Clinic, symptoms of the disease include vision loss, pain, fatigue and impaired coordination.
In 2016, the TV personality made headlines when was detained by German Customs for possession of marijuana, despite having a prescription for the drug, which is said to help with his MS.
LAS VEGAS, NV - JUNE 17: Television personality and host Montel Williams attends the Raising the Stakes Celebrity Charity Poker Tournament benefiting the One Step Closer Foundation at Planet Hollywood Resort & Casino on June 17, 2016 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)
NOVI, MI - SEPTEMBER 24: TV Personality Montel Williams attends the world premiere of Anchor Bay Entertainment and Norman Koza Productions' 'Golden Shoes' at Emagine Novi on September 24, 2015 in Novi, Michigan. (Photo by Loreen Sarkis/Getty Images)
LONDON, UNITED KINGDOM - JUNE 26: Television personality Montel Williams Visits The Iranian Embassy, London where he attempted to meet with the Iranian Chief of Mission to talk about Amir Hekmati, an American hostage held by Iran on June 26, 2015 in London, England. (Photo by Alex B. Huckle/Getty Images)
LAS VEGAS, NV - JUNE 19: Television personality and host Montel Williams attends the Raising the Stakes for Cerebral Palsy Celebrity Poker Tournament at Planet Hollywood Resort & Casino hosted by the One Step Closer Foundation to raise funds and awareness for people with cerebral palsy on June 19, 2015 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)
NEW YORK, NY - APRIL 29: Montel Williams attends the 9th Annual HealthCorps' Gala at Cipriani Wall Street on April 29, 2015 in New York City. (Photo by Nomi Ellenson/FilmMagic)
ARLINGTON, TX - APRIL 19: Tara Fowler (L) and Montel Williams attend the 50th Academy of Country Music Awards at AT&T Stadium on April 19, 2015 in Arlington, Texas. (Photo by Michael Buckner/ACM2015/Getty Images for dcp)
DALLAS, TX - APRIL 17: Co-hosts Nancy O'Dell (L) and Montel Williams speak onstage during the ACM Lifting Lives Gala at the Omni Hotel on April 17, 2015 in Dallas, Texas. (Photo by Jason Merritt/ACM2015/Getty Images for dcp)
NEW YORK, NY - DECEMBER 15: Montel Williams attends 'American Sniper' New York Premiere at Frederick P. Rose Hall, Jazz at Lincoln Center on December 15, 2014 in New York City. (Photo by Chance Yeh/FilmMagic)
UNITED STATES - OCTOBER 1: Montel Williams, media personality and former Marine, testifies at a House Foreign Affairs Subcommittee on the Western Hemisphere hearing on Marine Sgt. Andrew Tahmooressi who is imprisoned in Mexico, October 1, 2014. Sgt. Tahmooressi, who suffers from PTSD, has been held in Mexico since being arrested in March for carrying guns across the border. (Photo By Tom Williams/CQ Roll Call)
NEW YORK, NY - MAY 13: TV personality Montel Williams (R) and Tara Fowler attend Museum Of Modern Art's 2014 Party In The Garden at Museum of Modern Art on May 13, 2014 in New York City. (Photo by Desiree Navarro/WireImage)
NEW YORK, NY - JUNE 25: Montel Williams attends 'Orange Is The New Black' New York Premiere at The New York Botanical Garden on June 25, 2013 in New York City. (Photo by Gary Gershoff/WireImage)
PARK CITY, UT - JANUARY 19: Montel Williams attends CORZO, 13th Sign Pictures, MPIC Events & Wishclouds Celebrity Charity Poker Tournament at The Everest Mansion powered by Saygus Vphone LTE on January 19, 2013 in Park City, Utah. (Photo by Robin Marchant/Getty Images)
NEW YORK, NY - JUNE 13: Montel Williams attends the Brooks Brothers Event Honoring Dignity U Wear & Suits For Soldiers With Maidenform on June 13, 2012 in New York City. (Photo by Craig Barritt/Getty Images for Brooks Brothers)
NEW YORK, NY - OCTOBER 15: Tara Fowler and Montel Williams attend the 'Escape Plan' premiere at Regal E-Walk on October 15, 2013 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)