If you are not covered by a public health insurance, it is highly
recommended that you are covered by a private insurance. Most private
health insurance policies don't pay family doctors' fees or for
medication that isn't provided in a hospital. Often, there will also be
an 'excess' of around EUR75 more than the cost of treatment. Most will,
however, pay for 100 per cent of specialists' fees and hospital
treatment in the best Portuguese hospitals.
The cost of comprehensive private insurance with a Portuguese
company varies considerably and can be very expensive, although young
families can expect comprehensive coverage at competitive rates.
it would be quite unfair to list all these international health insurance providers without mention to AXA-PPP Healthcare:
http://www.axappphealthcare.co.uk