The Define Ventures Mafia
13 people came through Define Ventures and went on to found or lead other companies.
Brook ByersFund AdvisorFounded Insite Vision +1Frank WilliamsVenture PartnerFounded Advisory +1Longsha LiuAI Fellow @ Define VenturesFounded Cornell +1Toby CosgroveHealthcare AdvisorFounded Cleveland ClinicBruce BroussardVenture PartnerFounded UsoncologyCarolyn MagillVenture PartnerFounded Remedy PartnersA.G. BreitensteinHealthcare AdvisorFounded FolxSeth CohenCommercial AdvisorFounded Ooda HealthQuinn WangAI Fellow Fall ‘25 CohortFounded Quadrant EyeMartin BittnerAI FellowFounded Redouble AIPeter ChienAI FellowFounded Kaigo HealthLukas KlaiberAI FellowFounded Kaigo HealthYujie Wang (王宇杰)AI FellowFounded Vocadian
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Frequently asked questions
- What is the Define Ventures mafia?
- The Define Ventures mafia is the network of 13 people who came through Define Ventures and went on to found or lead other companies, including Insite Vision, Advisory, Cornell, Cleveland Clinic, Usoncology.
- Who is in the Define Ventures mafia?
- Notable members include Brook Byers (Insite Vision), Frank Williams (Advisory), Longsha Liu (Cornell), Toby Cosgrove (Cleveland Clinic), Bruce Broussard (Usoncology), Carolyn Magill (Remedy Partners), A.G. Breitenstein (Folx), Seth Cohen (Ooda Health), among 13 tracked members.
- What companies did Define Ventures alumni found?
- Companies founded by Define Ventures alumni include Insite Vision, Advisory, Cornell, Cleveland Clinic, Usoncology, Remedy Partners, Folx, Ooda Health, Quadrant Eye, Redouble AI.