About ScopeRank
ScopeRank helps patients find high-quality colonoscopy providers by surfacing the metrics that actually matter for colorectal cancer detection.
1Why These Metrics
Adenoma Detection Rate (ADR)
The percentage of colonoscopies where at least one adenoma (precancerous polyp) is found. ADR is the single strongest predictor of a provider's ability to prevent colorectal cancer.
Weight: 40 points
Cecal Intubation Rate (CIR)
The percentage of exams where the scope reaches the cecum (end of the colon). Incomplete exams miss portions of the colon entirely.
Weight: 25 points
Withdrawal Time
Average time spent examining the colon during scope withdrawal. Longer withdrawal times are associated with higher adenoma detection.
Weight: 20 points
Annual Volume
Number of colonoscopies performed per year. Higher volume providers tend to have greater technical proficiency and lower complication rates.
Weight: 15 points
2Who Can Perform Colonoscopies
Colonoscopies are performed by board-certified physicians in several specialties:
- GIGastroenterologists — The most common specialists. Complete dedicated GI fellowships focused on endoscopy.
- CSColorectal Surgeons — Surgical specialists who also perform high volumes of diagnostic and therapeutic colonoscopies.
- GSGeneral Surgeons — May perform colonoscopies, particularly in rural areas with limited specialist access.
3Scoring Method
Each provider is given a composite score from 0–100 based on four metrics, weighted by their clinical significance:
Where norm(v, min, max) = clamp((v − min) / (max − min), 0, 1)
4Data Sources & Transparency
Provider listings come from the CMS National Plan & Provider Enumeration System (NPPES) NPI registry, which is the authoritative public database of US healthcare providers.
Quality metrics are self-reported by providers. We do not independently verify these figures. Verified badges will be awarded when metrics are corroborated by institutional or payer data.
Providers: submit your quality metrics to appear in rankings.