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H1

YC W20

New York City, US · Founded 2017 · 500 employees · 16 known investors

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H1 operates an AI-driven platform that integrates healthcare data to identify and match doctors for clinical trials, patient care, medical affairs, and referrals. The company serves pharmaceutical companies, healthcare providers, and other organizations that need to connect with appropriate medical expertise.

Also known as H1 Insights, Inc.

AI & Machine LearningDigital HealthHealthtechHealth TechHealthcareUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (W20)

H1 was founded in 2017 by Ariel Katz and Ian Sax.

AKAriel Katz
Ariel KatzFounderAriel Katz previously founded and exited Researchconnection.com. He is now founder of H1, an AI platform that matches medical professionals with clinical trials, patient care, and other healthcare initiatives.30 Under 30 2022
ISIan Sax
Ian SaxFounder
DB
Devin BasingerVice President Business Innovation
LA
Lauren AhrensSenior Director, Talent Acquisition
IM
Ismail MohammedRecruiter
HF
Hannah FerrarisRecruiter
ZF
Zachary FeuersteinVice President of Productformer
DPDon Pinkus
Don PinkusCPOformerFounder/CTO at Blockspring
DS
David seidenfrauVice President - Engineeringformer
DS
David StreetProduct Engineering Managerformer
DA
Dan AntonelliHead of Peopleformer
PM
Philip McClureRecruiterformer

Investors · 16

Communitas Capital Partnerslisted by Communitas Capital PartnersNew York

How we know: Communitas Capital Partners's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us

Dorm Roomlisted by Dorm RoomBrooklyn · $90K – $500K
Glynn Capital Managementlisted by Glynn Capital ManagementMenlo Park

How we know: Glynn Capital Management's portfolio page · Not right? Tell us

HealthX Ventureslisted by HealthX VenturesMadison

How we know: HealthX Ventures's portfolio page · Not right? Tell us

IVP (Institutional Venture Partners)listed by IVP (Institutional Venture Partners)San Francisco · $15M – $75M

How we know: IVP (Institutional Venture Partners)'s portfolio page · a partner's Signal profile · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Lux Capitallisted by Lux CapitalNew York · $100K – $100M

How we know: Lux Capital's portfolio page · Y Combinator's founder network · Not right? Tell us

Menlo Ventureslisted by Menlo VenturesSan Francisco · $1M – $20M

How we know: Menlo Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

TRANSFORMATION CAPITALlisted by TRANSFORMATION CAPITALBoston

How we know: TRANSFORMATION CAPITAL's portfolio page · Y Combinator's founder network · Not right? Tell us

Underscore VClisted by Underscore VCBoston

How we know: Underscore VC's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Altimeter CapitalreportedMenlo Park · $1M – $25M

How we know: Y Combinator's founder network · Not right? Tell us

Core Venture CapitalreportedLos Angeles · $1M – $5M

How we know: open dataset · 5k.vc investor directory · Not right? Tell us

CVS Health VenturesreportedWoonsocket

How we know: Y Combinator's founder network · Not right? Tell us

Flex Capital PartnersreportedSan Francisco · $500K – $2M

How we know: Y Combinator's founder network · Not right? Tell us

Liquid VenturesreportedSan Francisco · $250K – $5M

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 8

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MednetMednet is a platform where physicians share clinical knowledge and answer peer-reviewed questions across 23 medical specialties. The platform connects over 45,000 verified physicians to improve medical decision-making through collective expertise.
LunaBillLunaBill provides AI automation software for hospital billing teams to manage denied claims and patient revenue cycles. The system replaces manual phone-based claim status inquiries with automated retrieval, serving health systems and RCM companies.
FutureClinicFutureClinic provides direct messaging access to licensed U.S. doctors for ongoing personal healthcare at a fixed monthly subscription price, with AI-assisted intake to reduce administrative burden and ensure unbiased medical advice. The platform connects patients with doctors across 40+ specialties in 28 states and Washington, D.C.
OupOxford University Press (OUP) provides dictionary data, language datasets, and lexical content in over 60 languages to power digital literacy tools, educational software, gaming platforms, and media experiences. The company works across reading apps, word games, quiz shows, and broadcast media to expand access to language learning and comprehension.
IQVIAIQVIA is a healthcare data and technology company that supports life sciences organizations in research, clinical development, and commercialization of medicines and medical solutions.
Definitive HealthcareDefinitive Healthcare delivers market intelligence and data analytics on healthcare organizations, clinicians, and consumers, serving life sciences companies, healthcare providers, and other industries that interact with healthcare. The company provides data consolidation, analytics services, and digital advertising activation capabilities to help customers make informed decisions in the healthcare market.

Companies working in the same space as H1.

Acquisitions · 1

Early investors' stakes continue via these deals
Ribbon Health

Ribbon Health was a healthcare data platform providing APIs with accurate information on providers, insurance plans, costs, and quality of care to power care navigation and provider directories. Acquired by H1.

Legal entities · 1

corporate structure
H1 Insights, Inc.

In the news

H1 Raises Series Ch1.co · Nov 2021

Frequently asked questions

What does H1 do?
H1 operates an AI-driven platform that integrates healthcare data to identify and match doctors for clinical trials, patient care, medical affairs, and referrals. The company serves pharmaceutical companies, healthcare providers, and other organizations that need to connect with appropriate medical expertise.
Who founded H1?
H1 was founded by Ariel Katz, Ian Sax in 2017.
Who are H1's investors?
H1's investors include BoxGroup, Communitas Capital Partners, Dorm Room, Glynn Capital Management, HealthX Ventures, IVP (Institutional Venture Partners), Lux Capital, Menlo Ventures and 8 more.
Where is H1 headquartered?
H1 is headquartered in New York City, US.