How much does colonoscopy, diagnostic cost in California?
CPT 45378 — the fair price, every hospital's price, and the Medicare benchmark for California.
Estimates only. Educational estimates from public Medicare
benchmarks and hospital-published prices — not a guarantee, and not legal, medical, or financial advice.
45378 Colonoscopy, diagnostic
Ask to pay
$1,823
About 2.0× what Medicare pays — most hospitals accept a self-pay rate in this range.
Typical
$1,734
Medicare $912
Ask $1,823
$93 lowboxed = typical rangehigh $14,614
What Medicare paysⓘ
$912
Typical price near you
$1,734
Cash / self-pay price
$2,080
Prices near you — 88 facilities, lowest first
| Facility | Type | Price | vs Medicare | Quality |
|---|---|---|---|---|
| Adventist Health Bakersfield (Bakersfield) lowest ⚠ likely error | Hospital | $93cash | 0.1× | — |
| Adventist Health Glendale (Glendale) ⚠ likely error | Hospital | $99cash | 0.1× | ★★★★★ |
| Adventist Health White Memorial (Los Angeles) ⚠ likely error | Hospital | $119cash | 0.1× | — |
| Clovis Community Medical Center (Clovis) | Hospital | $398negotiated | 0.4× | — |
| Community Regional Medical Center (Fresno) | Hospital | $398negotiated | 0.4× | — |
| Providence Little Company of Mary Torrance (Torrance) | Hospital | $498cash | 0.5× | ★★★★★ |
| Providence Saint Joseph Medical Center (Burbank) | Hospital | $511cash | 0.6× | — |
| Eisenhower Medical Center (Rancho Mirage) | Hospital | $592cash | 0.6× | ★★★★★ |
| Los Angeles General Medical Center (Los Angeles) | Hospital | $603negotiated | 0.7× | ★★★★★ |
| Harbor-UCLA Medical Center (Torrance) | Hospital | $603negotiated | 0.7× | — |
| Providence Holy Cross Medical Center (Mission Hills) | Hospital | $611cash | 0.7× | — |
| Providence Cedars-Sinai Tarzana Medical Center (Tarzana) | Hospital | $678cash | 0.7× | ★★★★★ |
| Scripps Mercy Hospital Chula Vista (Chula Vista) | Hospital | $749cash | 0.8× | — |
| Scripps Mercy Hospital San Diego (San Diego) | Hospital | $749cash | 0.8× | ★★★★★ |
| Scripps Green Hospital (La Jolla) | Hospital | $749cash | 0.8× | ★★★★★ |
| Scripps Memorial Hospital Encinitas (Encinitas) | Hospital | $749cash | 0.8× | ★★★★★ |
| Scripps Memorial Hospital La Jolla (La Jolla) | Hospital | $749cash | 0.8× | ★★★★★ |
| Providence St. Jude Medical Center (Fullerton) | Hospital | $1,045cash | 1.1× | ★★★★★ |
| Dignity Glendale Memorial Hospital (Glendale) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity St. John's Regional Medical Center (Oxnard) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity Bakersfield Memorial Hospital (Bakersfield) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity St. Bernardine Medical Center (San Bernardino) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity Mercy Medical Center Redding (Redding) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity St. Mary Medical Center (Long Beach) | Hospital | $1,158negotiated | 1.3× | — |
| Dignity Northridge Hospital Medical Center (Northridge) | Hospital | $1,158negotiated | 1.3× | ★★★★★ |
| Dignity California Hospital Medical Center (Los Angeles) | Hospital | $1,158negotiated | 1.3× | — |
| Tri-City Medical Center (Oceanside) | Hospital | $1,196negotiated | 1.3× | — |
| Dignity Mercy General Hospital (Sacramento) | Hospital | $1,198negotiated | 1.3× | ★★★★★ |
| Providence Mission Hospital (Mission Viejo) | Hospital | $1,204cash | 1.3× | ★★★★★ |
| UCLA Santa Monica Medical Center (Santa Monica) | Hospital | $1,274negotiated | 1.4× | ★★★★★ |
| Dignity St. Joseph's Medical Center (Stockton) | Hospital | $1,294negotiated | 1.4× | — |
| Providence St. Joseph Hospital (Orange) | Hospital | $1,297cash | 1.4× | ★★★★★ |
| Providence St. Mary Medical Center (Apple Valley) | Hospital | $1,300cash | 1.4× | — |
| Dignity Mercy San Juan Medical Center (Carmichael) | Hospital | $1,318negotiated | 1.4× | — |
| Dignity Sequoia Hospital (Redwood City) | Hospital | $1,337negotiated | 1.5× | ★★★★★ |
| Ronald Reagan UCLA Medical Center (Los Angeles) | Hospital | $1,355negotiated | 1.5× | ★★★★★ |
| Sharp Memorial Hospital (San Diego) | Hospital | $1,414cash | 1.6× | ★★★★★ |
| Natividad Medical Center (Salinas) | Hospital | $1,467cash | 1.6× | — |
| Providence Santa Rosa Memorial Hospital (Santa Rosa) | Hospital | $1,613cash | 1.8× | — |
| Providence Queen of the Valley Medical Center (Napa) | Hospital | $1,613cash | 1.8× | — |
| UCI Health – Los Alamitos (Los Alamitos) | Hospital | $1,734negotiated | 1.9× | — |
| UCI Health – Fountain Valley (Fountain Valley) | Hospital | $1,734negotiated | 1.9× | — |
| UCI Health – Lakewood (Lakewood) | Hospital | $1,734negotiated | 1.9× | — |
| UCI Medical Center (Orange) | Hospital | $1,734negotiated | 1.9× | ★★★★★ |
| UCI Health – Placentia Linda (Placentia) | Hospital | $1,734negotiated | 1.9× | — |
| Loma Linda University Medical Center – Murrieta (Murrieta) | Hospital | $1,925cash | 2.1× | — |
| Desert Regional Medical Center (Palm Springs) | Hospital | $2,066negotiated | 2.3× | — |
| Kaiser Permanente Fontana Medical Center (Fontana) | Hospital | $2,080cash | 2.3× | — |
| Kaiser Permanente San Diego Zion Medical Center (San Diego) | Hospital | $2,080cash | 2.3× | ★★★★★ |
| Kaiser Permanente Los Angeles Medical Center (Los Angeles) | Hospital | $2,080cash | 2.3× | ★★★★★ |
| JFK Memorial Hospital (Indio) | Hospital | $2,148negotiated | 2.4× | — |
| UC Davis Medical Center (Sacramento) | Hospital | $2,322cash | 2.5× | ★★★★★ |
| Keck Hospital of USC (Los Angeles) | Hospital | $2,392negotiated | 2.6× | ★★★★★ |
| Sharp Grossmont Hospital (La Mesa) | Hospital | $2,537cash | 2.8× | ★★★★★ |
| Sharp Chula Vista Medical Center (Chula Vista) | Hospital | $2,537cash | 2.8× | — |
| Sharp Coronado Hospital (Coronado) | Hospital | $2,537cash | 2.8× | ★★★★★ |
| Stanford Health Care Tri-Valley (Pleasanton) | Hospital | $2,664cash | 2.9× | — |
| UCSF Medical Center (San Francisco) | Hospital | $2,721negotiated | 3.0× | ★★★★★ |
| Loma Linda University Medical Center (Loma Linda) | Hospital | $2,750cash | 3.0× | ★★★★★ |
| Sutter Santa Rosa Regional Hospital (Santa Rosa) | Hospital | $2,888negotiated | 3.2× | — |
| Sutter Roseville Medical Center (Roseville) | Hospital | $2,910negotiated | 3.2× | ★★★★★ |
| Sutter Memorial Medical Center (Modesto) | Hospital | $2,910negotiated | 3.2× | — |
| Sutter Mills-Peninsula Medical Center (Burlingame) | Hospital | $2,997negotiated | 3.3× | ★★★★★ |
| Sutter CPMC Van Ness Campus (San Francisco) | Hospital | $2,997negotiated | 3.3× | — |
| Highland Hospital – Alameda Health System (Oakland) | Hospital | $3,000cash | 3.3× | — |
| Sutter Alta Bates Summit Medical Center (Oakland) | Hospital | $3,012negotiated | 3.3× | — |
| Kaweah Health Medical Center (Visalia) | Hospital | $3,039cash | 3.3× | — |
| Sutter Medical Center Sacramento (Sacramento) | Hospital | $3,054negotiated | 3.3× | ★★★★★ |
| Sutter Eden Medical Center (Castro Valley) | Hospital | $3,054negotiated | 3.3× | — |
| Stanford Health Care (Stanford) | Hospital | $3,432cash | 3.8× | ★★★★★ |
| Pomona Valley Hospital Medical Center (Pomona) | Hospital | $3,656negotiated | 4.0× | ★★★★★ |
| Kaiser Permanente San Francisco Medical Center (San Francisco) | Hospital | $3,679cash | 4.0× | ★★★★★ |
| Kaiser Permanente Fresno Medical Center (Fresno) | Hospital | $3,679cash | 4.0× | — |
| Kaiser Permanente Sacramento Medical Center (Sacramento) | Hospital | $3,679cash | 4.0× | ★★★★★ |
| Riverside Community Hospital (Riverside) | Hospital | $3,684negotiated | 4.0× | — |
| Cedars-Sinai Medical Center (Los Angeles) | Hospital | $3,965cash | 4.3× | ★★★★★ |
| UC San Diego Health - Hillcrest & Jacobs Medical Center (San Diego) | Hospital | $4,408cash | 4.8× | — |
| Good Samaritan Hospital (San Jose) | Hospital | $5,002negotiated | 5.5× | — |
| Dignity Dominican Hospital (Santa Cruz) | Hospital | $5,269negotiated | 5.8× | — |
| Riverside University Health System Medical Center (Moreno Valley) | Hospital | $5,350cash | 5.9× | — |
| Hoag Memorial Hospital Presbyterian (Newport Beach) | Hospital | $5,487negotiated | 6.0× | ★★★★★ |
| MemorialCare Orange Coast Medical Center (Fountain Valley) gross charge | Hospital | $6,134cash | 6.7× | — |
| MemorialCare Long Beach Medical Center (Long Beach) gross charge | Hospital | $6,134cash | 6.7× | ★★★★★ |
| MemorialCare Saddleback Medical Center (Laguna Hills) gross charge | Hospital | $6,134cash | 6.7× | ★★★★★ |
| Rady Children's Hospital (San Diego) gross charge | Hospital | $6,862negotiated | 7.5× | — |
| Los Robles Health System (Thousand Oaks) gross charge | Hospital | $7,968negotiated | 8.7× | — |
| John Muir Health Walnut Creek Medical Center (Walnut Creek) gross charge | Hospital | $10,359cash | 11.4× | ★★★★★ |
| John Muir Health Concord Medical Center (Concord) gross charge | Hospital | $14,614cash | 16.0× | — |
Prices from each hospital's public machine-readable file; imaging & surgery-center prices are published self-pay rates (often the cheapest option). vs Medicare is how many times the Medicare rate each facility charges. 10 unusually low/high prices excluded from the typical price as likely data errors.
💬 What to say — negotiation scripts
- For 45378 (Colonoscopy, diagnostic), Medicare's benchmark rate is $911.71. A fair self-pay target for this line is $1,823.42. If I was charged more than that, please reduce it toward this benchmark.
- Your own published cash / self-pay price for 45378 is $2,080.00, and negotiated rates at nearby facilities run $1,158.42–$3,032.25. Please apply a rate in that range to my bill rather than the gross charge.
- Please send a fully itemized bill listing every CPT/HCPCS/DRG code and its individual charge, so I can review each line against published rates.
- Separately, what is your financial assistance / charity care policy, and am I eligible? Please send me the application and the income thresholds.
See colonoscopy, diagnostic prices in another area
What should 45378 cost in California?
For colonoscopy, diagnostic (CPT 45378) in California, a fair self-pay price is around $1,734, with hospitals ranging from $1,158 to $3,032 across 88 facilities. Medicare's benchmark rate is $912, the floor to negotiate toward. The card above lists each hospital's price, cheapest first, with CMS quality stars.
Frequently asked questions
How much does colonoscopy, diagnostic cost in California?
A fair self-pay price for colonoscopy, diagnostic (CPT 45378) in California is around $1,734, with hospital prices ranging from $1,158 to $3,032 across 88 facilities. These are estimates from hospital-published prices, not a guarantee.
What is the Medicare rate for CPT 45378?
Medicare pays about $912 for colonoscopy, diagnostic (CPT 45378). That's the negotiation floor — a fair cash-pay target is roughly 1.5–2× it, well below typical gross charges.
Can I negotiate the price of colonoscopy, diagnostic?
Yes. Under the federal Hospital Price Transparency rule hospitals must publish these rates, so you can ask to pay the cash or negotiated rate instead of the gross charge. Paste your bill on the home page for a ready-to-send appeal letter and the exact numbers to cite.
Got a bill for this?
If you were charged more than the fair price, you can usually negotiate it down. Paste your itemized bill to get a personalized appeal letter, the exact numbers to cite, an AI negotiation coach, and a charity-care eligibility check — free.
Compare other procedures in California
Screening mammogram, bilateralDiagnostic mammogram, unilateralDiagnostic mammogram, bilateralDEXA bone density scanScreening colonoscopy (average risk)Chest X-ray, 2 viewsChest X-ray, 1 viewLumbar spine X-ray, 3+ views
Prices last refreshed September 2026 from each hospital's official CMS machine-readable file. Medicare rate: CY2025 OPPS/PFS/CLFS. Estimates only — not a guarantee.