I can only think of a few instructors around the Phili area:
I think Cebu West teaches Modern Arnis around that area.
Also Manong Dawud Muhammad teaches Sayoc-Kali and Modern Arnis in that area as well.
You may want to check out the FIT (Filipino Indonesian Thai) Martial Arts Academy in Frazer, PA (just outside of West Chester). The Silat Instructor is a "Jagabaya" under the late Pak Herman Suwanda in Mande Muda Silat and holds high rank in Sunda Silat under Pak Ban Ban Suwanda.
In addition, Bahala Na Eskrima, Serrada, Balintawak and Lameco is also played there along with authentic Muay Thai under Grandmaster Toddy of the MTIA. Definitely good stuff: www.fitkickboxing.com