Duncan Tsen

Active 2d ago

Bio: 10,000 Hours of Play

California • INFP

Active 10h ago

Bio: Founder of 1callclosers.com -- 4 kids, an awesome wife, and I like hitting the iron every now and then. Let's get after it!

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@duncan-tsen-8469

I help sales professionals and SME owners build scalable, compounding businesses in regenerative medicine

Active 1d ago

Joined Jan 8, 2026