Find your path to Martin
1,012 people in our graph share verified history with Martin — schools, employers, funds. One of them is your warm intro.
René KuijtenunlockedMartin: together at Utrecht University (2012–2015)
Martin: together at Stanford University Graduate School of Business
×6Martin: together at Y Combinator
×2Martin: together at University of Twente
About
Martin Willemink is co-founder and CEO of Segmed, which provides structured, de-identified medical imaging data and multimodal datasets to support AI and healthcare research.
Co-founder at SegmedYC W20
Intro paths
YC
Martin went through Y Combinator (Winter 2020) — any YC alum in your network can reach them through the YC community.
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In turn, Martin can intro founders to Segmed's investors below.
Segmed's investors · 9
Alchemist AcceleratorSan Francisco · $30K checks · since 2023Blumberg CapitalMiami · $500K – $5M checks · since 2022ExpeditionsWarsaw · since 2022iGan PartnersToronto · $365K – $2.2M checks · since 2024Mighty CapitalSan Francisco · since 2022Nina CapitalBarcelona · $215K – $1.6M checks · since 2022NovaCapitalsince 2022South Quadsince 2022Y CombinatorSan Francisco · $500K checks · since 2020
Co-founders at Segmed
JW
Jie WuFounder
MJ
Marinus Johannes WilleminkExecutive Officer, Director
WA
Wojciech Adam KoszekExecutive Officer, Director
CH
Cailin HardellFounder
CK
Cailin KramerFounder
Experience
- Segmed, Inc.Co-Founder & Chief Scientific Officercurrent2025 — presentSan Diego, California, United States
- Segmed, Inc.Co-Founder & CEO2022 — 2025San Diego, California, United States
- Segmed, Inc.Co-Founder2019 — 2022Mountain View, California, United States
- European Society of RadiologyJunior Deputy Editor (European Radiology)current2019 — presentVienna, Austria
- Stanford University School of MedicineInstructor (Junior Faculty)2019 — 2022San Francisco Bay Area
- Stanford University School of MedicinePostdoctoral Researcher2017 — 2019San Francisco Bay Area
- ArterysConsultant2018 — 2019San Francisco Bay Area
- UMC UtrechtRadiology Resident2015 — 2017Utrecht Area, Netherlands
- UMC UtrechtPhD Student2012 — 2015Utrecht Area, Netherlands
- PhilipsSpeaker Bureau Lecturer2014 — 2016Eindhoven Area, Netherlands
- The Mount Sinai HospitalFulbright Scholar2014 — 2015New York, The United States
- Mastin DesignFounder & UI Designer2005 — 2009
Skills & more
Medicine25Medical Imaging26Graphic Design8Research25Public Relations3Photography2Life Sciences3English7Management1Clinical Research11Healthcare1Radiology1
+12 more
RSPSSScienceBiomedical EngineeringMedical DevicesComputed TomographyEntrepreneurshipStatisticsLeadershipBusiness DevelopmentMachine LearningData Analysis- SIIM - Hackathon 2022 Winner — Society for Imaging Informatics in Medicine (SIIM)
- Introduction to Marketing — The Wharton School
- Good Clinical Practice (GCP) — Stanford University
- Verified Peer Reviewer — Publons
- Fellow of the Society of Cardiovascular Computed Tomography (FSCCT) — Society of Cardiovascular Computed Tomography
From Martin's professional profile.
Frequently asked questions
- Who is Martin Willemink?
- Martin Willemink is co-founder and CEO of Segmed, which provides structured, de-identified medical imaging data and multimodal datasets to support AI and healthcare research.
- Where does Martin Willemink work?
- Martin Willemink is Co-founder of Segmed.
- What companies did Martin Willemink found?
- Martin Willemink founded Segmed.
- Where did Martin Willemink go to school?
- Martin Willemink studied at Y Combinator (W20); Stanford University Graduate School of Business (Stanford Ignite Winter 2019, Business Administration and Management); Utrecht University (Doctor of Philosophy (PhD), Medical Imaging).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
Stanford University Graduate School of Business mafia748
Also came through, then founded or led a company.
Steve JurvetsonMaster of Business Administration (MBA)Founded Future Ventures +1Theresia GouwMBAFounded EarlyTony XuMBAFounded DoorDashDavid VélezMBAFounded Nubank +1IanMaster of Business Administration (M.B.A.)Founded Apex Technology +3Matt RouifStanford Ignite (Summer Institute for Entrepreneurship)Founded Photoroom +3
+ 741 more
Utrecht University mafia36
Also came through, then founded or led a company.
Lukas DerksenCertificateFounded Sidlee +3Vanessa LiuInternational LawFounded Sugarwork +1Joris StraatmanBAFounded Juli +1Maarten EngelenArtificial IntelligenceFounded HiberGiulio CantoroSummer SchoolFounded Blink Last MileEmiel van LiereMasterFounded Quest
+ 29 more
University of Groningen mafia34
Also came through, then founded or led a company.
Remco van ZantenMsCFounded Zalando +2Ronald BrusDoctor of Medicine (MD)Founded Mytomorrows +1Ed Samulski, PhDPostdoctoral ResearchFounded Liquidia Technologies +1Koen ThijssenBScFounded Insify Small business insurance +1Herman KienhuisMScFounded Curiosity VCGjalt HuismanDoctor of Philosophy - PhDFounded Embold Therapeutics
+ 27 more
University of Twente mafia23
Also came through, then founded or led a company.
Sheji HoBachelor of Science (B.Sc.)Founded Hd +1William SteenbergenBSc - Magna Cum LaudeFounded Federato +1Wouter JonkMSc (ir)Founded SET VenturesLisanne BlauwInternshipFounded River BioMedicsPeter HulshofM.Sc. / B.Sc.Founded GradyentAnand ChowdharyHonors ProgramFounded FirstQuadrant
+ 16 more
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesCollin WallaceGeneral Partner at Lobby CapitalVictor SantosVictor Scout at One Way Ventures
+ 1,994 more
Also attended Utrecht University187
René KuijtenInvestor at LSP (Life Sciences Partners)Alina GouninaInvestor at Moonfire VenturesAlex PortoInvestor at Riverwood CapitalBas JongtienLegal Counsel at DOB EquityMatthijs BlokhuisDirecteur at NoaberRoel DekkersInvestment manager at Noaber
+ 181 more
Also attended University of Groningen204
Ragnar JongenInvestor at DN CapitalJelle Van de PutteFund Administrator at Capricorn Venture PartnersLaura LentzExecutive Assistant at Castle Island VenturesChristophe de MontillePartner at Beyond Capital VenturesPeter HaasjesHead of Investments at NoaberMarlene van LooProgramma manager at Noaber
+ 198 more
Also attended University of Twente63
Alain le LouxGENERAL PARTNER at Cottonwood Technology FundDaan BoekhoudtInvestment Analyst at Cottonwood Technology FundLucas VassaloInvestor at Riverwood CapitalWouter JonkCo-Founder & Partner at SET VenturesJanne JuholaPartner, Innovestor Venture Capital at Innovestor VenturesSheji HoInvestor at FEBE Ventures
+ 57 more
Shared employers
Also worked at Segmed, Inc.3
Also worked at Stanford University School of Medicine205
Josephine ChenInvestor at Sequoia CapitalJeffrey FinerVenture Partner at Third Rock VenturesFrancisco GimenezInvestment Team at 8VCLan JiangPartner at Lux CapitalJeffrey DeFlavio, MDEntrepreneur in Residence at AlleyCorpLily RaakaStrategist at Plum Alley Investments
+ 199 more
Also worked at Arterys2
Also worked at Philips263
Paul van OoikInvestment associate at NoaberLidwi van OsProgram & Office Support Officer at NoaberDaniel GrafGeneral Partner at redalpineRuben OsnabruggePartner & Chief Medical Officer at 415 CapitalNeelam DhawanTech Industry Trailblazer at SenseAI VenturesJoel CraterGeneral Partner at Cultivation Capital
+ 257 more