Hi I have not used them but a quick google from a phill based pc brought back this.
http://www.chartisinsurance.com/_295_191304.html
http://www.worldnomads.com/?gclid=CO...FUMIHAodiyWmHQ
http://www.bluecross.com.ph/
Im pretty sure AIG have offices here in phill as do other big insurers.
Hope this helps a litle
