Ali Parsa believes the mobile phone might be the most important medical piece of equipment we have and wants to use it to change the face of healthcare.
"If you have a little question you can type it in," he says, showing off his app, Babylon Health.
"We'll have a doctor respond to your question in minutes."
Babylon Health is a subscription service which you access via a smartphone app.
For a monthly subscription of £4.99 ($7.55/€7.99) customers can get unlimited medical consultations by text and video. Once you've had an online exchange, a doctor can send a prescription to your nearest pharmacy and arrange a referral for a follow-up consultation.
"If you had something wrong and wanted to see a doctor you used to take half a day off and go to the surgery," Dr Parsa says.
"Today you can make an appointment in seconds, see a doctor in minutes and get an answer straight away."
Already, 250,000 people are using Babylon Health in the United Kingdom and Ireland either as direct subscribers or through a private medical insurance policy.
Real world or mobile?
But can seeing a doctor on your phone compete with visiting one in person?