Bernie Madoff's cause of death was kidney disease and hypertension, according to his death certificate.
The 82-year-old died on April 14 inside Butner prison in North Carolina.
He had been sentenced to 150 years in July 2009, and served his entire sentence at the prison, with fellow inmates including Israeli spy Jonathan Pollard and mob boss Carmine Persico.
Madoff's death certificate, obtained by TMZ, also gives his profession - describing him as working in 'real estate/broker'.
Insurance Loans Mortgage Attorney Credit Lawyer
Bernie Madoff is seen in March 2009, leaving court. He was sentenced to 150 years
Madoff, seen in 2003, died on April 14 at the age of 82
He had requested compassionate release, given his poor health, but was denied.
His body was cremated inside the prison.
Madoff robbed victims 37,000 victims in 136 countries of $64.8 billion, taking one's money to pay off the other, for two decades before finally being arrested in 2008 after his two adult sons turned him in.
He never showed any remorse, and described his victims as 'greedy', according to New York Magazine.
Many of his victims came from the Jewish community where Madoff had been a major philanthropist.
Bernie and Ruth Madoff in Palm Beach, Florida, before his 2008 arrest. Madoff died aged 82 in prison on WednesdayInsurance Loans Mortgage Attorney Credit Lawyer
His wife, Ruth, 79, is living is Connecticut but has been seen recently in Palm Beach, Florida, where Bernie's younger brother Peter also lives with his wife Marion.
His adult sons Mark and Andrew turned him in to the authorities after he confessed to them that the investment firm he was running was a Ponzi scheme and 'one big lie'.
Mark stopped speaking to him and hanged himself in 2010, on the second anniversary of his father's arrest.
He was so ashamed of his father that he couldn't live with the guilt of his crimes anymore.
Andrew died from lymphoma in 2014.
He had beaten cancer once but it returned in 2011, after Bernie's arrest. He blamed his father for his