Best Healthcare IT Companies in Japan
The 141 best Healthcare IT companies in Japan in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: AI Medical Service.
Healthcare IT in Japan is moving faster than its funding numbers suggest, and this directory ranks 141 companies in the space by disclosed equity raised and recent funding momentum. Total disclosed capital across the cohort sits at $506M, with Rehab for Japan leading at $14M, Medmain close behind at $13M, and Godot at $11M rounding out the top tier. No unicorns yet, but the trajectory is pointed upward: the global Healthcare IT market is forecast to reach $344B by 2030 at a 14.1% CAGR, driven by government digitization mandates and accelerating mHealth adoption. Japan's regulatory push toward interoperable electronic health records is pulling domestic capital in the same direction, with Mitsubishi UFJ Capital, Beyond Next Ventures, and SBI Investment among the most active backers here.
So what does traction actually look like on the ground? Median app install growth of roughly +16% year-on-year across 53 healthcare apps tells you consumer behavior is shifting, even if headline funding rounds stay modest. I'd watch the AI diagnostics and imaging segment closely: Cardio Intelligence and Medmain are both operating in that lane. Picking the right consulting partner matters more as the field gets crowded, and cybersecurity obligations are fast becoming a baseline requirement rather than an afterthought for any company you'd want in your shortlist.
- Building Intelligent Healthcare Systems The Role of AI, EHRs, and Adva
- Healthcare IT Market: Top trends transforming the industry dynamics th
Our analysis of 248 Healthcare IT companies
$18.1b in tracked funding; 87% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Healthcare IT companies in Japan
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | AI Medical Service AI-powered endoscopic software to detect early-stage gastrointestinal cancers | $122M | 49 mo ago | Series C | 40 | 智裕 多田 CEO and Representative Director | Apple iCloud MailGoogle WorkspacePHP+25 | 38 patents AI-powered analysis and assistance for endoscopic and diagnostic medical imaging | — |
| 2 | CureApp Developer of therapeutic mobile applications for various medical conditions | $101M | 46 mo ago | Series G | 69 | Kohta Satake Md Mph Founder | Amazon Web ServicesCloudflareAmazon S3+13 | 58 patents Digital health platform for monitoring cancer symptoms and hypertension risk. | — |
| 3 | Linc'well Provider of a clinic management platform for medical practices | $69M | 54 mo ago | Series C | 30 | Ryosuke Yamamoto Co-Founder & Co-CEO | STUDIOApple iCloud MailGoogle Workspace+15 | — | — |
| 4 | Information Technology Medical Online platform for patient charts, billing, and video chatting with patients | $67M | 32 mo ago | Series C | 70 | Yusuke Sugomori Co-Founder & CTO | NotionSuper BuilderTurbopack+20 | — | — |
| 5 | TXP Medical Digital emergency department management and coordination tool | $16M | 19 mo ago | Series C | 20 | Tomohiro Sonoh CEO | ContentfulNode.jsFirebase+15 | — | — |
| 6 | Rehab for JAPAN Provider of online and in-person rehabilitation services and data analytics for elderly care | $14M | 2 mo ago | Series D | 57 | Ryo Okubo CEO | SentryApple iCloud MailGoogle Workspace+20 | — | — |
| 7 | Medmain Provider of AI-based analysis software for pathology image diagnosis | $13M | 13 mo ago | Series A | — | Osamu Iizuka Founder & CEO | Node.jsYouTubeNext.js+14 | — | — |
| 8 | Godot Provider of behavioral science and AI-based hyper-personalization engine | $11M | 12 mo ago | Series A | 7 | Ken Moriyama Co-Founder & CEO | — | 11 patents Patents concentrated in computing, sensing & instrumentation | 1 award |
| 9 | Araya Brain Imaging Neuroimaging technology and services | $9M | 80 mo ago | Series B | 76 | Ryota Kanai CEO | Cart FunctionalityWordPressApple iCloud Mail+30 | 5 patents AI-based personalized brain imaging analysis for predicting individual health characteristics | 2 job openings · 1 launch |
| 10 | MediPhone Provider of medical translator services and software for healthcare organizations | $8M | 47 mo ago | Series A | 69 | Mayumi Sawada CEO | WordPressMySQLPHP+21 | — | — |
| 11 | LPixel Image analysis tools using artificial intelligence | $7M | 115 mo ago | Series A | 35 | Kamada Tomy CEO | WordPressApple iCloud MailGoogle Workspace+18 | — | — |
| 12 | Holoeyes Provider of technology for 3D VR visualizations of the human body for medical examination | $6M | 12 mo ago | Acquired | 7 | — | WordPressMySQLPHP+19 | 5 patents Medical VR data creation and server platform for clinical visualization | — |
| 13 | Yuimedi Provider of medical data analysis platform to enhance the healthcare system | $6M | 4 mo ago | Seed | 11 | Emily Grimes CEO | — | 5 patents Data conversion, generation, and medical analytics platforms for healthcare information processing | — |
| 14 | AMI Corporation Provider of stethoscope for heart disease diagnosis | $5M | 13 mo ago | Series C | 34 | Shinpei Ogawa CEO | ContentfulNode.jsFirebase+15 | — | — |
| 15 | mediVR Provider of VR-based rehabilitation device for patients with mobility issues | $5M | 15 mo ago | Series B | — | Masahiko Hara Founder & CEO | WordPressMySQLPHP+10 | 41 patents VR-enabled rehabilitation and cognitive assessment devices for medical therapy | — |
| 16 | Medley Online portal for disease-specific medical information and medical jobs | $4M | 110 mo ago | Public | 101 | — | GSAPAmazon Web ServicesSplide+14 | — | — |
| 17 | Simplex Quantum Provider of AI-based device for measuring ECG of patients | $4M | 42 mo ago | Series A | 7 | Ryu Saito Chief Executive Officer | — | 27 patents Software and hardware for data processing, authentication, and medical information systems | — |
| 18 | Emium Corporation Provider of cloud-based platform for managing and optimizing digital advertising campaigns | $4M | 14 mo ago | Seed | 3 | — | — | 3 patents Embedded AI-driven data processing and control systems for medical devices | — |
| 19 | Corporate-m Provider of AI-based software for the analysis of brain images | $4M | 21 mo ago | Series A | — | Susumu Mori Founder | Node.jsGSAPVue.js+9 | — | — |
| 20 | Jmees Digital AI-based surgery support system for providers | $4M | 31 mo ago | Series B | 13 | Osamu Takeshita Co-Founder | WordPressMySQLPHP+22 | 7 patents AI-driven surgical assistance tools and medical image analysis platforms | — |
| 21 | Cardio Intelligence AI-based medical devices for diagnosis and treatment of heart diseases | $3M | 3 mo ago | Series B | — | Yuichi Tamura CEO | WordPressMySQLPHP+14 | 31 patents AI-driven electrocardiogram signal analysis and diagnostic decision support software | — |
| 22 | CogSmart AI-based brain health assessment and analysis tool for providers | $3M | 53 mo ago | Series A | — | Akira Higuchi CEO | — | 7 patents Patents concentrated in computing, sensing & instrumentation | — |
| 23 | 3Sunny Provider of website development and SEO services for medicare issues | $3M | 63 mo ago | Seed | — | Yukihiko Enomoto Co-Founder & COO | — | — | — |
| 24 | Pocket Therapist Provider of a platform that offers information on health management and collaboration health | $3M | 43 mo ago | Series B | — | Naoto Fukutani CEO | WordPressMySQLPHP+23 | — | — |
| 25 | Boston Medical Sciences AI-powered colorectal cancer screening system | $3M | 16 mo ago | Series A | — | Masaki Okamoto CEO & President | WordPressMySQLPHP+11 | — | — |
| 26 | Remohab Online telemedicine platform for rehabilitation | $2M | 77 mo ago | Seed | — | Tatsunori Taniguchi Founder & CEO | — | — | — |
| 27 | Antaa Provider of second opinion platform for doctors | $2M | 73 mo ago | Seed | — | Shun Nakayama CEO | — | — | — |
| 28 | iMed Technologies Developer of AI-based video analysis technology for surgery support | $2M | 68 mo ago | Seed | 5 | Motohisa Kaneko Co-Founder | WordPressMySQLPHP+20 | — | — |
| 29 | Precal Provider of online prescription management software | $2M | 18 mo ago | Seed | 6 | — | WixSentryBootstrap+13 | — | — |
| 30 | Starsphere Clinical data integration solutions | $1M | 115 mo ago | Series A | 3 | Steve van Maanen Founder & CEO | — | — | — |
| 31 | Susmed An app which takes user data, puts it through an algorithm, and then provides advice for fixing patient's… | $880K | 111 mo ago | Public | 34 | Taro Ueno CEO | WordPressMySQLPHP+16 | 26 patents Digital therapeutic platforms for mental health and sleep disorder management | — |
| 32 | HealtheeOne Cloud based platform for recording medical consultation | $800K | 115 mo ago | Seed | 5 | Masakazu Koyanagi Founder & Ceo | — | — | — |
| 33 | Spiker Company offers monitoring devices for cardiac and vascular disorders | $595K | 35 mo ago | Seed | — | Ayako Kasai CEO | — | — | — |
| 34 | Time Prediction Provider of digital iPSC technology to predict and avoid intractable diseases | $538K | 18 mo ago | Seed | — | Tomoko Tada CEO & President | — | — | — |
| 35 | Do.Sukasu Provider of VR-based solutions for visual cognitive disabilities | $406K | 8 mo ago | Seed | — | Kazuki Kasai CEO | — | 2 patents 3D spatial cognition assessment and training hardware/software systems | — |
| 36 | Korbato Health AI based platform offering solutions for early detection and prevention of cardiovascular disease | $286K | 24 mo ago | Seed | — | Ryuichiro Yagi CEO | — | — | — |
Top 12 Healthcare IT companies in Japan
#1
Series D · Chiyoda City, Tokyo · founded 2016 · 57 employees$14.2Mraised▾
Provider of online and in-person rehabilitation services and data analytics for elderly care. It offers software for healthcare providers, online rehabilitation support, and data analysis services to improve care. The company aims to enhance the quality of life for the elderly through technology, focusing on making rehabilitation more accessible and enjoyable. Its services utilize data-driven approaches to create personalized care plans and contribute to a sustainable elderly care system. They also develop and offer a SaaS platform for scientific care.
- Feb 2024Series D$6.7M
- Feb 2023Series D$6.7M
- Aug 2018Seed$900.9K
#2
Seed · Minato City, Tokyo · founded 2020 · 11 employees$5.7Mraised▾
Provider of medical data analysis platform to enhance the healthcare system. It offers a platform to support analytical research using medical data and prescription decisions by doctors and provides consulting on medical data, and operation services. It specialize in data cleansing and standardization using the OMOP Common Data Model, enabling the comparison and integration of medical data across systems and institutions.
- Feb 2026Seed$2.6M
- Jul 2024Seed$2.5M
- Jul 2024Venture Debt—
- Nov 2022Seed$3.2M
#3
Series B · Minato City, Tokyo · founded 2019$3.2Mraised▾
AI-based medical devices for diagnosis and treatment of heart diseases. The company has developed an automated analysis system that assists healthcare professionals in clinical decision support and treatment. The device diagnoses the heart conditions by analyzing the ECG waveforms and creating a model using deep learning techniques.
- Mar 2026Series B—
- Nov 2025Series B—
- Mar 2024Series A—
- Aug 2022Series A$3.2M
#4
Series A · Minato City, Tokyo · founded 2018$13.3Mraised▾
Provider of AI-based analysis software for pathology image diagnosis. Pidport an AI-based software allows the user's to instantly screen pathological tissues and cells. The pathological image data and case information can be managed and stored on the cloud server.
- May 2025Series A$3.3M
- Apr 2024Series A$5.5M
#5
Series A · Kobe, Hyogo · founded 2022 · 7 employees$10.7Mraised▾
Provider of behavioral science and AI-based hyper-personalization engine. It offers a platform for digital cognitive behavioral therapy that enable clients to improve citizen engagement and people's behavioral patterns.
- May 2025Series A$7.6M
- May 2025Conventional Debt—
- Jun 2023Series A$3.1M
#6
Acquired · Tokyo, Tokyo · founded 2016 · 7 employees$6.4Mraised▾
Provider of technology for 3D VR visualizations of the human body for medical examination. Applications include medical training and 3D reports for better examination.
- Jun 2025Series B$32M
- Aug 2023Series B$2.7M
- Feb 2022Series B—
- Apr 2019Series B$2.2M
#7
Series C · Minamata, Kumamoto · founded 2015 · 34 employees$4.9Mraised▾
Provider of stethoscope for heart disease diagnosis. The company is developing remote auscultation compatible video chat system that utilizes the technology of sending heart sounds separately to audible and visible data.
- May 2025Series C—
- Mar 2025Series C—
- Dec 2024Series C—
- May 2020Series A$4.9M
#8
Series C · Bunkyo, Tokyo · founded 2017 · 20 employees$16.3Mraised▾
Digital emergency department management and coordination tool. The company has developed products like NEXT Stage ER which has been built for EHR management and patient information recording. Another product NEXT Stage ER cloud has been built with the cloud-based storage system. Features of the products include hospital data management, data-based decision-making, and more.
- Oct 2024Series C$16.3M
- Apr 2022Series B—
#9
Series B · Toyonaka, Osaka · founded 2017$4.5Mraised▾
Provider of VR-based rehabilitation device for patients with mobility issues. It offers a device that helps patients with mobility impairment and body posture to recover through post-operative care. It provides different body movement exercises and games to help patients with walking and standing.
- Mar 2025Series B—
- Jul 2021Series B$4.5M
#10
Seed · Shinjuku, Yamanashi · founded 2020 · 3 employees$4Mraised▾
Provider of cloud-based platform for managing and optimizing digital advertising campaigns. The platform offers tools for campaign creation, performance tracking, and reporting. It enables users to analyze data and adjust strategies to improve advertising effectiveness. The platform supports various advertising channels and formats.
- Mar 2025Seed$4M
#11
Series A · Chuo-ku, Kyushu · founded 2023$2.7Mraised▾
AI-powered colorectal cancer screening system. The company offers colorectal cancer screening virtual endoscopy system enabling healthcare providers to detect and treat colorectal cancer in its early stages.
- Feb 2025Series A$6.1M
- Oct 2024Seed—
- Oct 2023Seed$2.7M
#12
Series C · Chiyoda City, Tokyo · founded 2015 · 70 employees$67.1Mraised▾
Information Technology Medical provides healthcare information. The company offers an app for services such as health information, disease management, insurers making, consultation recommendation, etc. The app allows doctors to manage patient charts, billing, and video chatting with patients.
- Oct 2023Venture Debt—
- Oct 2023Series C$27.2M
- Apr 2018Series A$10.1M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Healthcare IT coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Digital Health is moving in Japan
A read on the academic research around Digital Health — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 528 Japan-affiliated papers.
- The University of Tokyo32
- Korea University29
- Kyoto University25
- Keio University20
- Asia University17
- Remote patient monitoring1→8
- Health informatics6→32
- Public health2→17
- Mental health1→10
- Health administration3→11
- Informatics1→8
- Health care1→55
- Public health3→47
- Health informatics6→46
- Health administration2→38
- Nursing research3→27
Where digital health is researched across Japan
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing digital health patents in Japan
Japan digital health patent filing is accelerating — 84 filings from 45 assignees (2016–2025), led by Symax, Mitsubishi Electric, Delta Kogyo; annual filings 4→12.
- Symax19
- Mitsubishi Electric9
- Delta Kogyo7
- Toyota7
- Unebe6
- Seiko Epson6
- Eisai R&D MAN5
- SONY4
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.