# Charles N. Martin

> Charles N. Martin is a funding round investor at Martin Ventures backing Health Care. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Martin Ventures](https://shizune.co/investors/profile/martin-ventures)
- Total investments: 4
- Last investment: Nov 2020
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/charles-n-martin-sr-pmp-83a3782

Charles N. Martin is a funding round investor at Martin Ventures focused on Health Care and Enterprise Software. Charlie has been praised as one of the most successful serial CEOs in hospital management. His successes include building de novo hospitals, acquiring and improving for-profit and not-for-profit hospitals and leading sustained periods of rapid growth in revenues, earnings, EPS and shareholder value as Chairman and CEO of numerous hospitalcompanies. His additional experience as an entrepreneur and investor in diverse healthcare sectors include ambulatory surgery centers, imaging centers, and cancer centers, among others.Charlie served as Chairman and CEO of Vanguard Health Systems since the company's inception in 1997. Under his leadership, Vanguard grew to become a Fortune 500 company. Vanguard was acquired by Blackstone Group in 2004 for approximately $1.75 billion. Prior to forming Vanguard, he served as Chairman, President and CEO of OrNda HealthCorp. Under his leadership, OrNda grew from revenue of $450 million to $3 billion in four years to become the nation's third-largest investor-owned hospital management company. His career includes serving as President, Director and COO of HealthTrust Inc., as well as Executive Vice President and Director of Hospital Corporation of America (HCA) and COO and Director of General Care Corp.Charlie has served on numerous Boards of Directors, including 10 healthcare companies. He previously served on the board of Council Capital portfolio company NotifyMD. He received a BS from Southern Adventist University.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 2 | 50% |
| Enterprise Software | 2 | 50% |
| Events | 1 | 25% |
| Sports | 1 | 25% |
| eSports | 1 | 25% |

14 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Funding Round | 2 | 50% |
| Seed | 1 | 25% |
| Series C | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Artera | Well Health provides a communication platform that connects patients to healthcare organizations through text, email, phone, and live chat. WELL is a communication tool that allows front offices to have two-way text conversations with patients, using existing office phone numbers. The platform is designed from the ground up to make patientcommunications more intuitive across the enterprise. Well Health's mission is to make going to the doctor as easy as meeting up with a close friend. | $45M | Series C | Nov 24, 2020 |  |
| Hearo.Live - Multiplayer TV | Hearo is the first virtual venue with a live audience. Our MultiplayerTV platform turns passive media into a buzzing, live event, and empowers a new class of creator-connector, the media leader. Hearo is Multiplayer TV. Bring your TV/streaming audience into your own venue, and turn your passive broadcast into a buzzing live social event.From epic live parties to intimate hangouts Hearo is your virtual couch, classroom, theater or stadium.Super Watch Partes. Laugh, talk, and cheer with friends while watching YouTube, Netflix, ESPN, and more in full-screen HD, like you're on a big cozy couch together.#TVisObsolete #MultiplayerTV #WeAreLive | $1.8M |  | Feb 07, 2020 |  |
| Hearo.Live - Multiplayer TV | Hearo is the first virtual venue with a live audience. Our MultiplayerTV platform turns passive media into a buzzing, live event, and empowers a new class of creator-connector, the media leader. Hearo is Multiplayer TV. Bring your TV/streaming audience into your own venue, and turn your passive broadcast into a buzzing live social event.From epic live parties to intimate hangouts Hearo is your virtual couch, classroom, theater or stadium.Super Watch Partes. Laugh, talk, and cheer with friends while watching YouTube, Netflix, ESPN, and more in full-screen HD, like you're on a big cozy couch together.#TVisObsolete #MultiplayerTV #WeAreLive | $1.8M | Seed | Feb 07, 2020 |  |
| HealthStream | HealthStream provides internet-based learning and research solutions to meet the training, information, and education. HealthStream (NASDAQ: HSTM) is dedicated to improving patient outcomes through the development of healthcare organizations' greatest asset: their people. Our unified suite of solutions is contracted by healthcare organizationsin the U.S. for workforce development, training and learning management, talent management,credentialing, provider enrollment, performance assessment, and managing simulation-based education programs. Their patient experience/research solutions provide valuable insight to healthcare providers to meet CAHPS requirements, improve the patient experience, engage their workforce and enhance physician alignment. Based in Nashville, Tennessee, HealthStream has additional offices in Laurel, Maryland; Brentwood, Tennessee; Pensacola, Florida, Jericho, New York, and San Diego, California. | $11.3M |  | May 02, 1999 |  |

4 of 4 investments shown.

## Co-investors
- [500 Global](https://shizune.co/investors/profile/500-startups) — VC Fund, 1 deal together
- [FCA Venture Partners](https://shizune.co/investors/profile/fca-venture-partners) — VC Fund, 1 deal together
- [Freestyle Capital](https://shizune.co/investors/profile/freestyle-capital) — VC Fund, 1 deal together
- [Health Velocity Capital](https://shizune.co/investors/profile/health-velocity-capital) — VC Fund, 1 deal together
- [Jackson Square Ventures](https://shizune.co/investors/profile/jsv) — VC Fund, 1 deal together
- [Lead Edge Capital](https://shizune.co/investors/profile/lead-edge-capital) — VC Fund, 1 deal together

## About Martin Ventures

VC Fund · Nashville, United States

Martin Ventures provides capital, operational support and mentoring to assist entrepreneurs who want to be catalysts for change. Focusing primarily on health care and technology initiatives, Martin Ventures’ unique approach allows the leadership of our portfolio companies to more acutely focus on the optimal execution of their vision and strategywhile quickly scaling and growing their businesses into successful, profitable organizations.

5 contacts available at Martin Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Charles N. Martin | Founder,CEO, Chairman and Managing Director | https://shizune.co/investors/profile/charles-n-martin |
| Adrienne Thompson | Senior Vice President Finance | https://shizune.co/investors/profile/adrienne-thompson |
| Devin Carty | Chief Executive Officer | https://shizune.co/investors/profile/devin-carty |
| Jordan Lipson | Principal | https://shizune.co/investors/profile/jordan-lipson |
| Stephen Collins | Venture Partner | https://shizune.co/investors/profile/stephen-collins |

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## FAQ

### What does Charles N. Martin invest in?

Charles N. Martin invests primarily in Health Care, Enterprise Software and Events startups, most often at Funding Round and Seed stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Charles N. Martin last invest?

The most recent investment recorded for Charles N. Martin closed in Nov 2020. Shizune tracks 4 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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