Clemens Schirmer is a Neurology physician affiliated with Geisinger Medical Center. OpenAlex indexes 374 publications with 8,724 citations (h-index 42); ClinicalTrials.gov lists 1 registered study matched to this name. By OpenAlex citation count, this profile ranks in the top 10% of Neurological Surgery profiles in the findmyKOL directory.
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
- Assessing the WAVE Extra Soft Coil in Intracranial Aneurysms and Comparing Imaging Modalities
Sponsor: Penumbra Inc.
Overall officialCompletedNCT04106583
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.
Industry payments
22 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
22 companies with payments on record in CMS Open Payments (2021 onward), matched to this physician's NPI. The itemized breakdown by company, amount and year is part of the full profile. Why? →
Similar KOLs
Other experts from the same institution or the same specialty.
Kenneth Altman, MD
Geisinger Medical Center
Shikhar Agarwal, MD, MPH
Geisinger Medical Center
Edward Monaco, MD, PhD
Geisinger Medical Center
Christen Mowad, MD
Geisinger 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.”