Jan Claassen is a Neurology physician affiliated with Columbia University Irving Medical Center. OpenAlex indexes 560 publications with 35,405 citations (h-index 90); ClinicalTrials.gov lists 2 registered studies matched to this name.
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingClinical trials
- Recovery of Consciousness Following Intracerebral Hemorrhage
Sponsor: Columbia University
Overall officialRecruitingNCT03990558 - Impact of Tachycardia on Outcome After Subarachnoid Hemorrhage (SAH)
Sponsor: Columbia University
Overall officialTerminatedNCT01585311
Registered studies on ClinicalTrials.gov where the overall official or a site investigator name-matches this physician, confirmed against known institution/geography. Latest few shown; the full list is part of the full profile.
NIH funding
3 NIH research awards on record, funded 2019–2026 per NIH RePORTER. The latest:
- SPRINT- Sleep to Predict Recovery In uNconscious patients with acute brain injury
Columbia University Health Sciences
FY2026$661,867R01NS145481 - RECONFIG - REcovery of CONsciousness Following Intracerebral hemorrhaGe
Columbia University Health Sciences
FY2023$616,022R01NS106014 - RECONFIG - REcovery of CONsciousness Following Intracerebral hemorrhaGe
Columbia University Health Sciences
FY2022$593,514R01NS106014
Awards in the NIH RePORTER records where a principal investigator name matches this physician at an organization in their practice state. Latest award years shown; each row links to the project record on RePORTER.
Similar KOLs
Other experts from the same institution or the same specialty.
Stanley Fahn, MD
Columbia University Irving Medical Center
Rebecca Hahn, MD
Columbia University Irving Medical Center
Susheel Kodali, MD
Columbia University Irving Medical Center
Ronald Wapner, MD
Columbia University Irving Medical Center
A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments — shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”