Colonoscopy, diagnostic at Greenwich Hospital. CPT 45378.
What Greenwich Hospital publishes for this service, straight from its standard-charges file, last updated September 19, 2026.
Outpatient / ER
$1,276cash price (self-pay)
$2,455list price
$254–$2,209range insurers pay
| Insurance plan | Negotiated rate |
|---|---|
| Medicare Advantage - Aetna | All Plans | $254 |
| Medicare Advantage - UHC | All Plans | $318 |
| Medicare Advantage - Empire Blue Cross | All Plans | $318 |
| HIP / Emblem Health | All Plans | $344 |
| Medicare Advantage - Wellcare | All Plans | $352 |
| Medicare Advantage - CtCare | All Plans | $401 |
| GHI / Emblem Health | All Plans | $417 |
| Optum | All Plans | $589 |
| Oscar Health | All Plans | $659 |
| Harvard Pilgrim | All Plans | $854 |
| UHC | All Plans | $869 |
| Aetna | All Plans | $907 |
| GreatWest | All Plans | $1,006 |
| Oxford | All Plans | $1,075 |
| Cigna | All Plans | $1,110 |
| Empire Blue Cross | All Plans | $1,139 |
| Advanced Medical Pricing Solutions (AMPS) | All Plans | $1,203 |
| ClaimDOC | All Plans | $1,203 |
| Champus | All Plans | $1,203 |
| Create Alliance | All Plans | $1,227 |
| MagnaCare | All Plans | $1,476 |
| MultiPlan | All Plans | $1,595 |
| FirstHealth | All Plans | $2,086 |
| Three Rivers Provider Network (TRPN) | All Plans | $2,209 |
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