A 49-year-old Norwalk doctor who billed Medicaid for nearly $5 million for visits that never occurred pleaded guilty Monday to health care fraud and money laundering offenses.

Authorities said Ramil Mansourov, a doctor who operated out of Family Health Urgent Care, transferred some of the stolen funds to a bank account in Switzerland and then moved $1.3 million from the Swiss bank account to at least three of his own domestic bank accounts.