John Mulaney is seeking treatment for alcoholism and cocaine addiction after nearly 20 years of sobriety.The 38-year-old comedian checked into a rehab facility in Pennsylvania earlier this month and will attend a 60-day program, The New York Post’s Page Six reported on Monday, December 21.The Chicago native has spoken openly about his past struggles with addiction, covering the personal topic in his Netflix stand-up specials New in Town, The Comeback Kid and Kid Gorgeous.