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PricedCare

Colonoscopy (diagnostic) in Riverside, CA costs $769 to $5,364. Here's every hospital's price.

12 hospitals in the Riverside-San Bernardino-Ontario, CA metro area publish a cash price for colonoscopy (diagnostic) (CPT 45378). We read their files every month so you don't have to.

Across the Riverside-San Bernardino-Ontario, CA metro area, 12 hospitals list a cash price for colonoscopy (diagnostic) (CPT 45378). The lowest is $769 at San Gorgonio Memorial Hospital, the median is $1,925 and the highest is $5,364 at Menifee Global Medical Center. The most expensive hospital lists 7.0 times the cheapest for the same code.

The Riverside, CA median of $1,925 is 28% above the national median of $1,500 across 304 US hospitals with a cash price for this code.

13 of these hospitals also publish the rates they negotiated with insurers, from $295 to $32,312. With insurance you pay a share of the negotiated rate, which is sometimes higher than the cash price; you may ask for the cash price instead.

The files behind these prices are dated between February 2026 and September 2026. 21 other hospitals in the metro area have no readable price for this code: some publish no file, some block automated reading, some leave the code out. They are listed below so you can call them.

$769
lowest cash price in Riverside, CA
San Gorgonio Memorial Hospital · 63 mi
$1,156 below the median
$1,925
median cash price
12 hospitals
7.0×
highest ÷ lowest
same procedure, same metro
12/34
hospitals with a cash price
21 don't · see who

Sorted by cash price

Hospital facility fee only
1
San Gorgonio Memorial Hospital

Banning · 63 mi · File May 2026

$769
list $3,843
2
Chino Valley Medical Center

Chino · 95 mi · File Sep 2026

$1,190
list $5,443 · lowest of 3 lines
3
Desert Valley Hospital

Victorville · 66 mi · File Sep 2026

$1,190
list $3,639 · lowest of 3 lines
4
Montclair Hospital Medical Center

Montclair · 95 mi · File Sep 2026

$1,190
list $5,443 · lowest of 4 lines
5
Providence St Mary Medical Center

Apple Valley · 57 mi · File Apr 2026

$1,300
list $2,708 · lowest of 10 lines
6
Loma Linda University Medical Center-Murrieta

Murrieta · 87 mi · File Sep 2026

$1,925
list $4,277 · lowest of 2 lines
7
Kaiser Foundation Hospital Fontana/Ontario

Fontana · 81 mi · File Apr 2026

$2,080
list $4,000
8
Loma Linda University Children's Hospital

Loma Linda · 73 mi · File Sep 2026

$2,482
list $5,516 · lowest of 2 lines
9
Loma Linda University Medical Center

Loma Linda · 73 mi · File Sep 2026

$2,750
list $6,112 · lowest of 2 lines
10
Riverside University Health System-Medical Center

Moreno Valley · 75 mi · File Mar 2026

$5,350
list $5,350 · lowest of 3 lines
11
Hemet Global Medical Center

Hemet · 72 mi · File Jun 2026

$5,364
list $5,364 · lowest of 2 lines
12
Menifee Global Medical Center

Sun City · 82 mi · File May 2026

$5,364
list $5,364 · lowest of 2 lines
1

What's in the price

The hospital facility fee for CPT 45378. The doctor, anesthesia and lab work usually bill separately.

2

Cash vs. insured

Cash is what you pay without insurance. With insurance you pay a share of the negotiated rate, which can be higher than cash. You may ask for the cash price.

3

What to say on the phone

"I'd like the self-pay price for CPT 45378, in writing, and whether it covers facility, physician and anesthesia."

About colonoscopy (diagnostic)

A colonoscopy is an examination of the large intestine with a flexible camera passed through the rectum. The diagnostic version, CPT 45378, is the base procedure: the doctor looks, and if nothing needs to be removed or sampled, this is the code the hospital bills. Most people are sedated and go home the same day.

What the price covers

The hospital's price for 45378 is the facility fee: the endoscopy suite, nursing, the scope and its cleaning, recovery time and disposable supplies. It usually does not include the gastroenterologist's professional fee, the anesthesia provider, or pathology if a sample is taken. Those are billed separately, often by different companies, and can add several hundred dollars to what you see here.

If polyps are found and removed, the code changes to 45385 (polyp removal) or 45380 (biopsy), and the price changes with it. A hospital's cash price for 45378 is the best starting point, not a guarantee of the final bill.

Screening versus diagnostic

A screening colonoscopy for someone with no symptoms is preventive care, which most insurance plans cover without cost-sharing. A diagnostic colonoscopy, done because of symptoms or a positive stool test, is not. The same procedure, the same room, a different code and a different bill. If you are insured, ask before the appointment which one will be billed.

Why prices vary so much

The spread between hospitals is often five to ten times for this code. Academic medical centers and large systems tend to list higher gross charges and higher negotiated rates; community hospitals and hospital-owned outpatient centers tend to be cheaper. Location matters less than ownership and system size. Freestanding ambulatory surgery centers, which are not in these files, are often cheaper still.

Questions to ask before you book

  • Is this the self-pay price for CPT 45378, in writing?
  • Does it include the physician, anesthesia and pathology, or are those separate?
  • If a polyp is removed, what does the price become?
  • Is there a prompt-pay or financial-assistance discount on top of the cash price?

Hospitals in Riverside, CA without a price for this procedure

Listed so you know who to call. The reason is what we found on their website.

Questions people ask