CNS pipeline · person
Spencer R. Berthelsen, MD
Director of Ionis Pharmaceuticals since May 2002. An internist, he practiced at the Kelsey-Seybold Clinic in Houston until 2017, where he held senior leadership roles including Medical Director and Managing Director, and has served as Clinical Professor of Medicine at Baylor College of Medicine and UT Health Science Center.
- 1 company
Current roles
- Ionis Pharmaceuticals, Inc.Director · Board2002–present
Appears with
People sharing a company with Spencer.
- Allene M. Diaz · Ionis Pharmaceuticals, Inc.
- Brett P. Monia · Ionis Pharmaceuticals, Inc.
- Brian Birchler · Ionis Pharmaceuticals, Inc.
- C. Frank Bennett · Ionis Pharmaceuticals, Inc.
- Elizabeth L. Hougen · Ionis Pharmaceuticals, Inc.
- Eric E. Swayze · Ionis Pharmaceuticals, Inc.
- Eugene Schneider · Ionis Pharmaceuticals, Inc.
- Holly Kordasiewicz · Ionis Pharmaceuticals, Inc.
- Joan E. Herman · Ionis Pharmaceuticals, Inc.
- Joseph Klein, III · Ionis Pharmaceuticals, Inc.
- Joseph Loscalzo · Ionis Pharmaceuticals, Inc.
- Joseph T. Baroldi · Ionis Pharmaceuticals, Inc.
- Kyle Jenne · Ionis Pharmaceuticals, Inc.
- Ludwig Hantson · Ionis Pharmaceuticals, Inc.
- Michael Hayden · Ionis Pharmaceuticals, Inc.
- Michael Yang · Ionis Pharmaceuticals, Inc.
- Patrick R. O'Neil · Ionis Pharmaceuticals, Inc.
- Peter N. Reikes · Ionis Pharmaceuticals, Inc.
- Shannon L. Devers · Ionis Pharmaceuticals, Inc.
- Stanley T. Crooke · Ionis Pharmaceuticals, Inc.
People and affiliation data assembled from public company disclosures, SEC filings, and conference materials — every record source-cited under psychiatrist-authored guardrails.