She was attending to patients in her clinic at Raffles Place on Nov 14 when two people rushed in.
Someone was injured across the street outside UOB Plaza and required medical assistance, they told her.
Dr Jacqueline Yam, 39, thought that it was just a mild cut.
She grabbed her gloves and bandages, and rushed to the scene.
The medical director of AcuMed Medical Group said: "When I arrived, I saw the victim bleeding profusely from one arm.
"He was conscious but losing a lot of blood, and he was in a lot of pain."
Dr Yam tied a tourniquet around his arm to stop the bleeding, and only left after an ambulance arrived.
She later found out that the victim, Mr Kang Tie Tie, was stabbed during a robbery.
For her act of public-spiritedness, Dr Yam was given a certificate of appreciation in a ceremony at Central Police Division yesterday.
Also commended were bank analyst Wilson Benedict Lim, 27, and auditor Mohamed Nazir Abdul Rahiman, 28.
The men helped to detain the 39-year-old suspect till police arrived.
Cash and cheques amounting to $800,000 were recovered. The suspect was charged the next day with armed robbery.
The victim has been discharged from hospital.
Dr Yam, who is married with three children aged five to 10, praised other passers-by who gave first aid before she arrived.
They were applying pressure to the wounds on the victim's abdomen.
She said: "Despite limited resources, they were helping with everything they had in their bags, such as tissues or towels."
Mr Nazir had tackled the man and pinned him down with an armlock.
Two weeks ago, his company, accounting firm KPMG, also recognised his bravery by giving him a certificate and a cash reward of $500.
He was also made an ambassador of the firm.
Mr Nazir said: "It's a great honour to get this award, but I'm also quite embarrassed by all the attention."
For Mr Lim, he was on his way back to his office after lunch when he saw the victim chasing the attacker.
He gave chase, and helped Mr Nazir by pinning down the suspect's legs.
Mr Lim said: "I feel very honoured and privileged to receive the award. It's also great to finally see the faces of the people who helped that day."
This article was first published on Dec 12, 2014.
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