# Tadashi Masuoka

> Tadashi Masuoka is a seed investor at Nippontect Systems (Tokyo) backing Medical and Health Care. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Nippontect Systems](https://shizune.co/investors/profile/nippontect-systems)
- Location: Tokyo, Japan
- Total investments: 1
- Last investment: Nov 2017
- Lead investor: 0%
- Last updated: Aug 2026
- Facebook: https://web.facebook.com/tadashi.masuoka

Tadashi Masuoka is a seed investor at Nippontect Systems in Tokyo focused on Medical and Health Care. Tadashi Masuoka - President and Founder @ nippontect systems

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 1 | 100% |
| Health Care | 1 | 100% |
| Home Health Care | 1 | 100% |
| Nursing and Residential Care | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Plusmedi | Plusmedi is the developer of MyHospital, a medical care and management app offering personal health record (PHR) solutions. The app aims to help users by reducing the time they spend at the hospital or doctor's office. MyHospital also includes features like bill payment, medication management, and online paperwork. |  | Seed | Nov 24, 2017 |  |

1 of 1 investments shown.

## Co-investors
- [aSTART](https://shizune.co/investors/profile/%EF%BD%81start) — VC Fund, 1 deal together
- [SMBC Venture Capital](https://shizune.co/investors/profile/smbc-venture-capital) — VC Fund, 1 deal together
- [Vector](https://shizune.co/investors/profile/vector-inc-) — VC Fund, 1 deal together

## About Nippontect Systems

VC Fund · Tokyo, Japan

Nippon Tect Systems is an ICT company focused on the dementia medical field.

2 contacts available at Nippontect Systems.

| Name | Title | Profile |
| --- | --- | --- |
| Tadashi Masuoka | President and Founder | https://shizune.co/investors/profile/masuoka-gen |
| Susumu Yagishi | President & CEO | https://shizune.co/investors/profile/susumu-yagishi |

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### Similar stage
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### Similar country
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## Featured in investor lists
- [Medical Angel Investors in Japan](https://shizune.co/investors/medical-angel-investors-japan)
- [Health Care Angel Investors in Japan](https://shizune.co/investors/health-care-angel-investors-japan)
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- [B2B Angel Investors in Japan](https://shizune.co/investors/b2b-angel-investors-japan)

## FAQ

### What does Tadashi Masuoka invest in?

Tadashi Masuoka invests primarily in Medical, Health Care and Home Health Care startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Tadashi Masuoka last invest?

The most recent investment recorded for Tadashi Masuoka closed in Nov 2017. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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