Editorial Policy
Last updated: April 20, 2026
Our approach
CancerDrs is a data aggregator, not a clinical advisor. We publish factual information sourced from federal public data sets and recognized authorities, and add explanatory content that cites primary sources. Every page that states a specific figure, designation, or statistic links to the authoritative source.
Our primary data sources
- ClinicalTrials.gov — U.S. National Library of Medicine registry of clinical trials. Refreshed weekly.
- NPI Registry (CMS) — Federal registry of licensed U.S. healthcare providers. Refreshed quarterly.
- CMS Provider Data — Hospital-level quality metrics published by the Centers for Medicare & Medicaid Services.
- National Cancer Institute — List of NCI-Designated Cancer Centers.
- SEER — National Cancer Institute's Surveillance, Epidemiology, and End Results Program for cancer incidence and survival statistics.
How we label content
- Data pages (directory, trial listings, cancer center pages): Last-checked date shown on every page. Source links cited.
- Guide pages (patient guides, explainers): Every factual claim links to a primary source. Reviewer bylines shown where applicable.
- Survivor stories: Submitted by real patients or caregivers, with bylines. Not medical advice.
- Sponsored placements: Clearly marked as "Sponsored," "Featured," or equivalent. Sponsorship never influences factual data.
What we avoid
- Subjective rankings of doctors or hospitals (we use objective designations like NCI designation or CMS star ratings, with citation).
- Medical advice or treatment recommendations.
- Claims we cannot cite to a primary source.
- Manufacturer or sponsor claims presented as independent fact.
Corrections
If you see an error, email [email protected]. We publish corrections and update "last checked" dates when we make substantive changes.
AI use
Some educational content on this Site is drafted with the assistance of AI writing tools and reviewed against primary sources before publication. All factual claims must be sourced; we do not publish speculative or unverified claims.