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Medmain is a technology company.
Medmain develops and operates PidPort, an AI-powered cloud-based system for digital pathology. This platform serves as a robust repository for pathological images, employing artificial intelligence to analyze specimens and deliver accurate, rapid diagnostic support. PidPort enhances efficiency and accessibility for medical professionals by streamlining the sharing of diagnostic results and cases.
Osamu Iizuka founded Medmain in January 2018. His vision stemmed from observing the significant burden on medical practitioners in pathology and the potential for technology to mitigate these challenges. Iizuka established the company, convinced that AI-driven digital tools could transform diagnoses, making medical services more efficient and broadly accessible.
Medmain primarily serves medical practitioners and healthcare professionals worldwide, providing advanced digital pathology tools. The company’s mission is to leverage technology to support healthcare, cultivating a future where medical services are universally accessible, anytime and anywhere. They achieve this through ongoing enhancement of their AI analytical systems for improved outcomes.
Medmain has raised $23.5M across 5 funding rounds.
Medmain has raised $23.5M in total across 5 funding rounds.
Medmain Inc. is a Japanese medtech startup founded in 2018, headquartered in Fukuoka with offices in Tokyo and the US, specializing in AI-driven pathology solutions to enhance healthcare accessibility worldwide.[1][2][3] The company develops PidPort, a cloud-based AI system for pathological image diagnosis using deep learning for precise screening, telepathology, and cloud storage of specimens, alongside Medteria, a cloud service for medical students.[1][2] It serves hospitals, physicians, pathologists, and medical students, addressing challenges like slow diagnosis workflows, limited remote access, and storage issues in pathology by enabling faster, objective AI-assisted analysis and global collaboration.[1][2][3] With revenue under $5 million and recent growth including US market entry via accelerators and implementations in Vietnam, Medmain shows momentum through international expansion and investments like from Plug and Play.[1][2][4]
Medmain was founded on January 11, 2018, by CEO Osamu Iizuka, a Kyushu University School of Medicine graduate with expertise in machine learning, deep learning, and web development.[3] After working as a web engineer in a startup and winning first place at a Silicon Valley pitch competition, Iizuka teamed up with a few Kyushu University members—including engineers and pathologists from diverse nationalities—to launch the company.[2][3] The idea emerged from combining medical pathology knowledge with AI to digitize and accelerate image diagnosis, starting with PidPort to support practitioners globally.[1][2][3] Early traction included product development focused on deep learning for pathology, leading to certifications like ISMS (ISO/IEC 27001:2022) in 2024 and selections for programs like the US Market Gateway Accelerator in 2023.[1][3]
Medmain stands out in digital pathology through these key strengths:
Medmain rides the digital pathology and AI-in-healthcare wave, transforming traditional microscope-based diagnosis into cloud-AI hybrids amid rising demand for faster, remote-capable tools post-COVID.[1][2][5] Timing aligns with global medtech growth, including Asia's digital health push and US expansion opportunities, as seen in their 2023 accelerator selection and Vietnam hospital implementation.[1][2] Market forces like pathologist shortages, aging populations in Japan, and regulatory approvals for AI diagnostics favor them, while investments from firms like Plug and Play fuel scaling.[4] They influence the ecosystem by partnering with practitioners worldwide, standardizing AI-assisted pathology, and participating in events like the Asian Society of Digital Pathology Congress, democratizing access in underserved regions.[2]
Medmain is poised for accelerated global rollout of PidPort, targeting more US and ASEAN markets with recent Vietnam success and US presence signaling momentum.[1][2] Trends like AI regulatory harmonization, telehealth expansion, and multimodal diagnostics will shape their path, potentially integrating with broader EHR systems. Their influence may evolve from niche innovator to key enabler of accessible pathology, amplifying impact as AI maturity grows—building on their mission to deliver medical services anywhere, anytime through technology.[3]
Medmain has raised $23.5M in total across 5 funding rounds.
Medmain's investors include Yukako Yokota, Naoko Okumoto, Alireza Masrour, Bow Capital, Buckley Ventures, DVx Ventures, Eunoia Capital Partners, Goodwater Capital, i/o Ventures, Launch Capital, Liquid 2 Ventures, Niu Ventures.
Medmain has raised $23.5M across 5 funding rounds. Most recently, it raised $3.3M Other Equity in May 2025.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| May 8, 2025 | $3.3M Other Equity | Yukako Yokota | Naoko Okumoto, Alireza Masrour |
| May 1, 2025 | $3.0M Series U | Bow Capital, Buckley Ventures, DVx Ventures, Eunoia Capital Partners, Goodwater Capital, i/o Ventures, Launch Capital, Liquid 2 Ventures, Niu Ventures, Oak HC/FT, Plug & Play Ventures, Vera Equity, Brandon Krieg, Immad Akhund, Jay Vijayan | |
| Apr 1, 2024 | $5.0M Series A | Pioneer Fund, Taro Fukuyama, Keisuke Fukada, Migaroholdings, Nikon, PSP | |
| Jul 25, 2022 | $2.2M Other Equity | PSP | |
| Aug 1, 2020 | $10.0M Series A |