Silva told CNN that the tourism ministry learned of the couple's location from police, who received a report from a clinic in the town of Angoteros after sending out a nationwide alert about the missing couple.
Every year, each hospital must report its revenues from inpatient and outpatient (clinic) operations, net of discounts by insurers, and also report its related expenses.
His report also criticised serious problems at the clinic, jointly run by the hospital and the Haringey primary care trust, where there was a lack of staff and poor case management.
Criticisms were contained in a confidential report into Dr Al-Zayyat and the St Ann's clinic where she worked, but a number were not passed on to the serious case review.