Staff at the Punjab Cardiology Institute in Lahore was found positive for the coronavirus.
Another 10 staff members tested positive for the virus, bringing the tally to 11.
A patient is believed to have contracted the virus because they had come into contact with an infected member of staff.
Three doctors and seven staff nurses tested positive for the virus.
The administration has suspended small and routine procedures and focuses on emergency ward care only.
CEO Professor Saqib Sheik says the virus will be checked on by all staff at the hospital.
Punjab has registered more than 3,000 cases of coronavirus so far.