In behalf of my presence, I would like to authorized Mr. BEN JAN N. BASILISCO,. To process and claim my Request.Too busy to go to the PhilHealth office? Learn how to make an authorization letter so your representative can transact with PhilHealth on your behalf. The document contains two sample authorization letters for PhilHealth. Authorization Letter from the member (original) and 2 Valid signature and photo bearing. I, Princess Natalie Rubianes, am writing this letter to authorize Maria Teresa Castañeda to act on my behalf regarding my PhilHealth-related transactions. I, Princess Natalie Rubianes, am writing this letter to authorize Maria Teresa Castañeda to act on my behalf regarding my PhilHealth-related transactions. All information required in this form are necessary. PhilHealth Claim Form 1 Guidelines "". View.