Hi Raptors2015,
Yes, no need for an appointment. Walk-in lang & 1st come per served. Better be early like 6m although 7:30 ang open nila. You'll be given a # naman kaya you can leave and have breakfast across the street. Or you can bring your sandwiches & water while waiting. May benches naman. Mahal ang restaurants sa loob, sa canteen naman not so expensive pero mahal na din kasi di impressive taste.
After you've done everything, the medical staff will inform you if ok na or not and what are the needed docs (medical clearances/certf) required based from the results of the exams - urine, blood (for HIV), chest xray & physical exams. You'll be give a deadline but in case it won't be sufficient (for medications, work-out, etc...) you can call them for an extension.
Although completely no clothes, you will be wearing naman a gown. The physical exams is lying down naman so it's not awkward. The doctor will feel & look at your throat, chest, tummy, eyes, etc... Yun lang.
At first, the doctor will interview you of your medical condition: kung may hypertension, heart problems, anything ordinary, any operations, any conditions you may have... Right there, inform ka nya kung may findings ang urine, blood, high blood pressure, etc... You'll be informed of xray result another day by phone siguro if something wrong.
Drink at least 2.5 liters of water everyday, days before your planned medical schedule. If meron kang occassional tendencies of high blood pressure, etc..., you should know what to do for prep, etc... If meron mga previous operations, better have your lab tests, ultrasounds, etc... & medical clearances for doctors.
In case alam mo na may medical issues ka, now pa lang pagamot or pa-work-out ka na para you won't be needing any medical clearance.
I hope this helps...
