Corporate Board Profile
Tech Score: 0/100
| Filing Date | Source Excerpt |
|---|---|
| 2018-04-11 | Dr. Berthelsen has served as a Director of Ionis since May 2002. Since 1980, he has practiced Internal Medicine with the Kelsey Seybold Clinic... The Board believes Dr. Berthelsen is uniquely suited to serve on the Board because of his experience advising a large multi-specialty group practice and 37 years of experience as a practicing physician. |
| 2019-04-26 | Dr. Berthelsen has served as a Director of Ionis since May 2002. Since 1980, he has practiced Internal Medicine with the Kelsey Seybold Clinic, a 400-physician medical group based in the Texas Medical Center in Houston. |
| 2023-04-20 | Dr. Berthelsen practiced Internal Medicine with the Kelsey Seybold Clinic, a 400-physician medical group based in the Texas Medical Center in Houston, until March 2017. Dr. Berthelsen began at Kelsey Seybold in 1980 and served in various senior leadership positions throughout his nearly four-decade career at the clinic, including Chairman of the Department of Internal Medicine, Medical Director and Managing Director. |
Data sourced from SEC filings. Last updated: 2025-10-11