Hi mama! Congrats sa pregnancy! So from what I know, yes kailangan mo magregister/magbukas ng record sa Mandaluyong City Medical Center kahit nagpacheck-up ka sa private, they'll want their own documentation para sa delivery, pero bring your prenatal records para makita nila ang history mo. Hindi ko sure ng exact maternity package nila ngayon kasi nag-adjust prices, pero best talaga calling them directly (they're usually helpful!) or asking din sa friends na manganak na doon, honestly, a few of us in our moms group found na mas sulit mag-ultrasound sa private clinics around Mandaluyong kaya kung budget conscious ka, you can do prenatal checks there and deliver sa MCMC, that's totally okay!