People · Operator
Named in public records as an officer, director or promoter · active 2019–2025 · Medical Devices, Other Health Care, Other Technology, Investment Vehicle
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Digital Diagnostics Inc. | — | Medical Devices | Series C | $139.0M | $1.2B | 2020 |
| KeyCare, Inc. | — | Other Health Care | Series B | $54.4M | $142.6M | 2025 |
| Daupler, Inc. | — | Other Technology | Series A | $17.3M | $49.1M | 2023 |
| Surglogs, Inc. | — | Other Technology | Series A | $15.4M | $163.0M | 2019 |
| Hummingbird Healthcare Spv, Llc | — | Investment Vehicle | Seed | $1.2M | $7.5M | 2023 |
| Hummingbird Healthcare Spv 2, Llc | — | Investment Vehicle | Seed | $1.1M | $4.7M | 2024 |
John Bertrand at the center, the companies they're named on, and every other operator named alongside them — an interlock map of shared founding teams, boards and funds. Name-matched, so treat as a research lead.
People named alongside John Bertrand on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| John Flannery | 2 | 2 |
| Mark Bakken | 1 | 24 |
| William Frist | 1 | 10 |
| William R. Cowen | 1 | 6 |
| WILLIAM H. FRIST | 1 | 6 |
| Drew Oetting | 1 | 4 |
| Ali Satvat | 1 | 4 |
| Sebastian Caliri | 1 | 4 |
| Patrik Backman | 1 | 3 |
| Benjamin Clark | 1 | 3 |
| Andrej Kiska | 1 | 3 |
| John P. Bertrand | 1 | 2 |
| Stephen Weiss | 1 | 2 |
| Lyle Berkowitz | 1 | 2 |
| Darcy P. Howe | 1 | 1 |
| Lance P. Anderson | 1 | 1 |
| Seth Rainford | 1 | 1 |
| Howard Leach | 1 | 1 |
| Michael Abramoff | 1 | 1 |
| George Barrett | 1 | 1 |
People are matched by normalized name across records; a common name may merge distinct individuals. Treat as a research lead, the same way modeled valuations are directional, not quoted.