Hi mama! I don't have personal experience with OBs specifically at ACE Medical Pateros, but a few of us moms usually check kung may good reviews online or ask sa Facebook groups for Pateros/Las Piñas area, maraming moms there share their OB experiences! Maybe try posting sa local community pages din or ask your friends kung sino ang trusted OB nila nearby, kasi personal recommendations talaga ang best source for this.
Aw, hindi ako naka-experience sa ACE Medical Pateros eh, but a few of my mum friends go there for their checkups at okay naman daw ang setup! I'd suggest asking in the ACE Pateros Facebook page or calling them directly, they can probably recommend which OBs are accepting new patients, or mag-survey ka sa moms in your area kung sino ang fave nila doon.