# Top 5 Medical Angel Investors in Brazil in June 2026

## Kees Koolen
- Type: Angel
- Location: Amsterdam, Noord-Holland, The Netherlands
- Relevant deals: 3
- Stages: Seed, Series A, Angel
- Focus: Travel, Software, E-Commerce

Kees Koolen is the Founder, Chairman and CEO of Koolen Industries. Previously Kees was COO, CEO and Chairman of booking.com. Kees was advisor to Uber from 2012-2017 concerning international rollout.

## Kevin Efrusy
- Type: Angel
- Location: Palo Alto, California, United States
- Relevant deals: 2
- Stages: Series B, Series A, Series C
- Focus: Software, E-Commerce, FinTech

Kevin Efrusy is the Co-Founder of The Efrusy Family Foundation and a Partner at Accel. Prior to that, he was the CEO and board member, and co-founder of IronPlanet. He attended Stanford University Graduate School of Business and Stanford University.

## Mario Letelier
- Type: Angel
- Location: São Paulo, Sao Paulo, Brazil
- Relevant deals: 1
- Stages: Pre-Seed, Seed, Series A
- Focus: Software, Information Technology, Health Care

Mario Letelier is the General Partner at DOMO Invest.

## Paulo Veras
- Type: Angel
- Location: São Paulo, Sao Paulo, Brazil
- Relevant deals: 1
- Stages: Seed, Pre-Seed, Series A
- Focus: Financial Services, B2B, B2C

Paulo Veras

## Marcelo Claure
- Type: Angel
- Location: Overland Park, Kansas, United States
- Relevant deals: 1
- Stages: Seed, Series B
- Focus: Information Technology, FinTech, Software

Marcelo Claure  is the Partner and Co-Chair at Brightstar Capital Partners. Previously he served as the CEO of Sprint. He serves as the Group Vice Chairman of Shein. Marcelo Claure attended Bentley University.