Mr Obi’s appointment was announced on Monday.
According to the presidency, his appointment takes immediate effect.
He was the Governor of Anambra State for two terms, between 2006 and 2014.
President Jonathan also approved the confirmation of Mr Mounir Gwarzo as Director General of the Securities and Exchange Commission.
Mr Gwarzo, who has been acting as Director-General of the Commission, was appointed to the Board of the Securities and Exchange Commission as Executive Commissioner in January, 2013.
President Goodluck Ebele Jonathan also relieved the Executive Secretary/Chief Executive Officer of the National Health Insurance Scheme (NHIS), Dr. Femi Thomas, of his appointment with immediate effect and approved the appointment of Mr Olufemi Akingbade, as Acting Executive Secretary/Chief Executive Officer of the NHIS.
Mr Akingbade, who hails from Ekiti State and holds a Bachelors Degree in Computer Science as well as a Masters in Business Administration, was the General Manager, ICT in the NHIS until his new appointment.