Mario Schlosser

Angel investor

Stages: Seed, Series A
Cheque size: $50k to $1m
Based in: United States
Focus: Insurance tech, AI, Care delivery

Mario Schlosser is a technology entrepreneur who co-founded Oscar Health in 2012, a consumer focused health insurance company. He led Oscar as chief executive from its founding, later served as chief technology officer, and supports other health technology ventures.

Oscar Health co-founder investing in payer technology and AI that lowers the cost of care.

Notable investments

Oscar Health
Insurtech startups

Firm website LinkedIn

The journey

How Mario Schlosser got here, step by step.

2012
Co-founded Oscar Health
Schlosser co-founded Oscar Health in New York, aiming to simplify the consumer health insurance experience.
2012 to 2023
Served as chief executive of Oscar
He led Oscar from founding through growth to more than a million members across several plan types.
2021
Oscar Health goes public
Oscar completed its initial public offering, one of the largest listings in insurance technology.
2024
President of technology and chief technology officer
Schlosser moved to lead technology strategy at Oscar as president of technology and chief technology officer.
2025
Adviser to the chief executive
He moved into an advisory role supporting Oscar's leadership across its business lines.
2020s
Board and advisory roles
Schlosser has taken board and advisory positions, including with Duolingo, applying his technology leadership experience.