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Tech Doctor

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Turns the data collected from wearable devices into insights

Tokyo, JapanFounded 2019Health Tech & Medtech
Valuation $50–100M Last recorded · 2025
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Tech Doctor and the history behind them.

About Tech Doctor

Established in June 2019, Tech Doctor is a Tokyo-based company operating at the intersection of healthcare and technology. The firm focuses on transforming daily data from wearable devices into actionable medical insights, a field it refers to as "data-based medicine". The company's core offering is its 'SelfBase' platform, which integrates, visualizes, and analyzes continuous, long-term data from various wearables and medical equipment. This platform is designed to assist in the development of digital biomarkers—objective indicators derived from digital devices that show disease presence or treatment effects.

The business model targets several client types within the healthcare ecosystem. For the food industry, SelfBase is used to verify and quantify the effectiveness of new or existing products for marketing purposes. In the realm of clinical research, the company provides comprehensive support, from study design and device procurement to data analysis from a medical perspective. This includes collaboration with clinical research organizations and offering supervisory support from academic experts. Tech Doctor's services are positioned to support decentralized clinical trials (DCT) and the broader adoption of online medical care. Since its founding, the company has secured $13.1 million in funding through multiple rounds, including a Seed Round in May 2021 and a Series A in June 2022, backed by investors such as JAFCO Group, Daiwa Corporate Investment, and Ono Digital Health Investment.

The leadership team includes President Kazumichi Minato and advisors with deep medical expertise, such as Dr. Mio Shinohara and Professor Manabu Minami. Dr. Shinohara has a three-decade career in veterinary medicine, holding a PhD in molecular oncology and specializing in integrating conventional treatments with holistic approaches like nutrition and herbal medicine. Professor Manabu Minami is a distinguished radiologist with extensive experience in oncologic and systemic diseases, having started his residency in 1983 and holding a professorship at the University of Tsukuba since 2004.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2019
Headquarters
Tokyo, Japan
Employees
4
Open positions
None listed
Dealroom signal
59.0/100
Industry
Health
Sub-industry
Health Platform
Sector
Health Tech & Medtech, Biotechnology, Biomarkers, Health Diagnostics, Wearable
Technology
IoT InternetOfThings
Business model
SaaS
Client focus
b2b

Funding history

6 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
EARLY VC✓Equity / VC May 2025 $9.2M $37M Nippon Venture Capital · Future Venture Capital · Daiwa Corporate Investment · Mitsui Sumitomo Insurance Venture Capital ↗
LATE VCEquity / VC May 2022 $3.8M $15M Undisclosed —
Showing the latest 2 of 6 recorded eventsBook a demo for the full funding history →

Growth signals

Tech Doctor website traffic

Latest recorded traffic for Tech Doctor is 6.5K monthly website visits, down 3% over the last three months. Tech Doctor's team grew 0% over the past year.

Latest monthly visits6.5K 3-month web change-3% 1-year team growth0%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

9 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A9 investors entered at this stage

  • Nippon Venture Capital
  • Future Venture Capital
  • Daiwa Corporate Investment
  • Mitsui Sumitomo Insurance Venture Capital
  • Ono Digital health Investment
  • Lion
  • JAFCO
  • Yamaguchi Capital
  • Resona Capital
Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇯🇵 Japan100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Tech Doctor on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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