Referral naman talaga nakukuha doctor, I don't know anyone who just googles their choice of doctor.
this may surprise you but there are people who call or go to a hospital's info desk and ask if there's a specialist available for the day

like "meron po urologist available today?"

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HMO patients only see accredited doctors right?

they can't choose who sees them

those are not referrals diba?