'Married to Medicine' Sneak Peek: Mariah and Toya Thrown Down at Birthday Bash (Exclusive Video)

Married to Medicine Cast - H 2013
Derek Blanks/Bravo

Married to Medicine Cast - H 2013

Yet another party turns into a drama-filled disaster on Married to Medicine.

The Hollywood Reporter has an exclusive clip from Sunday's episode, which revolves around Mariah Huq's husband's birthday party.

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Tensions begin to flair even before the party kicks off. While Kari Wells is setting up for the festivities, Mariah is nowhere to be found -- and finally shows up two hours late.

Later, Mariah and Toya Bush-Harris get into a physical altercation after Toya reveals a secret from Mariah's past; she also irks Mariah by talking about her mother. The fight then turns physical, leaving guests in shock, drinks thrown and a purse in the pool.

STORY: Bravo's 'Married to Medicine' Scores Biggest Premiere Since 'Bethenny'

Married to Medicine has become a hit for Bravo, with the most recent episode drawing 1.8 million total viewers and 1.2 million adults 18-49, up 31 percent and 60 percent, respectively, from the previous episode. That also marked the highest-rated episode of the season so far in the demo, and together with The Real Housewives of Atlanta reunion episode, boosted Bravo to the No. 1 cable network in primetime for the night.

Married to Medicine airs at 9 p.m. Sundays on Bravo.