Samuel Klempner is an Oncology physician. OpenAlex indexes 883 publications with 12,383 citations (h-index 52); 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 fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
11800 Wilshire Blvd
Los Angeles, CA 900256602
Telephone
310-231-2167Provider last certified this registry record 11 Feb 2026.
Clinical trials
- Zimberelimab + Domvanalimab in Gastroesophageal Adenocarcinoma
Sponsor: Massachusetts General Hospital
- Ivonescimab in Comb. With FOLFOX in Advanced HER2 Neg. GEA
Sponsor: Massachusetts General Hospital
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
26 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- AstraZeneca UK LimitedProgram year20256 payments$13,198openpaymentsdata.cms.gov ↗
- AstraZeneca Pharmaceuticals LPProgram year20257 payments$10,930openpaymentsdata.cms.gov ↗
- Astellas Pharma Europe LtdProgram year20255 payments
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Gastric Cancer, Version 2.2025, NCCN Clinical Practice Guidelines In Oncology
Journal of the National Comprehensive Cancer Network
2025 - Zolbetuximab in Gastric or Gastroesophageal Junction Adenocarcinoma
New England Journal of Medicine
2024 - Esophageal and Esophagogastric Junction Cancers, Version 2.2023, NCCN Clinical Practice Guidelines in Oncology
Journal of the National Comprehensive Cancer Network
2023
Similar KOLs
Other experts from the same institution or the same specialty.
Freddie Bray
Centre National de la Recherche Scientifique
Jacques Ferlay
Centre international de recherche sur le cancer
Hermann Brenner
German Cancer Research Center
Isabelle Soerjomataram
Centre international de recherche sur le cancer
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.”