Your Trusted Choice for Colonoscopy Screening on Long Island
If you're 45 or older, now is the time to protect your health with a screening colonoscopy.
At East End Gastroenterology, we combine physician experience, proven quality indicators, advanced technology, and convenient scheduling to make colon cancer screening simple, safe, and stress-free.
✅ 10,000+ Colonoscopies Performed Since 2006
✅ 31% Adenoma Detection Rate (ADR)
✅ 11-Minute Average Withdrawal Time
✅ AAAASF-Accredited Endoscopy Center
✅ Weekend Colonoscopy Scheduling Available
✅ Most Insurance Plans Accepted
✅ Self-Pay Bundle Pricing Available
Schedule My Colonoscopy Consult at Manorville or Riverhead.
Why Choose Dr. Mark Coronel for Your Colonoscopy?
Choosing a gastroenterologist for your colon cancer screening is an important decision. Many adults want to know they’re choosing an experienced physician, a safe facility, and a practice with a strong reputation.
Since 2006, Dr. Mark Coronel has performed more than 10,000 colonoscopy procedures, helping adults across East Long Island achieve early detection and prevent colon cancer.
Colonoscopy Quality Indicators That Matter
Not all colonoscopies are the same. Quality metrics help assess how carefully and effectively a colonoscopy is performed.
Adenoma Detection Rate (ADR): 31%
ADR measures how often precancerous colon polyps are found during screening colonoscopy. Higher detection rates are associated with better outcomes in colon cancer prevention. The ASGE accepted average adenoma detection rate is 25%.
Average Withdrawal Time: 11 Minutes
Withdrawal time reflects the thoroughness of the colonoscopy. A thorough withdrawal can improve polyp detection. The ASGE accepted average withdrawal time is 6 minutes.
Why Colonoscopy Is the Gold Standard for Colon Cancer Screening
A colonoscopy remains the gold standard because it is the only screening test that can:
✅ Detect and Remove precancerous polyps during the same procedure
✅ Help prevent colon cancer before it develops
✅ Provide a complete evaluation of the colon
Other screening tests can detect potential problems, but only colonoscopy can both detect and remove polyps in a single exam. If you have a positive stool or blood test result, you’ll need a colonoscopy to confirm the result and remove any polyps that may be present.
When Should You Get Screened for Colon Cancer?
If you are 45 or older and at average risk for colon cancer, screening is recommended—even if you feel healthy.
Colon cancer often develops without symptoms, which is why early screening matters.
You may need screening earlier if you have:
- Family history of colon cancer
- Family history of colon polyps
- Rectal bleeding
- Changes in bowel habits
- Unexplained abdominal pain
- Unexplained weight loss
Advanced, Accredited Endoscopy Center on Long Island
Your colonoscopy is performed in our on-site endoscopy center, designed specifically for digestive health procedures.
Our facility features:
✅ State-of-the-art GI technology
✅ Experienced GI-focused clinical staff
✅ Comfortable outpatient environment
✅ AAAASF accreditation for safety and quality
Convenient Colonoscopy Scheduling in Manorville & Riverhead
We make screening easier with:
✅ Weekend colonoscopy appointments
✅ Two convenient East End Long Island locations
✅ Streamlined scheduling process
✅ Friendly scheduling staff
Our East Long Island Locations
Manorville, NY
Riverhead, NY
Click this link to view the contact information and driving directions for our locations.
Insurance Coverage & Self-Pay Colonoscopy Pricing
Most insurance plans cover 100% of the cost of a screening colonoscopy for eligible patients.
If you don’t have insurance or have a high deductible, ask about our self-pay bundled colonoscopy pricing.
We’re happy to answer any insurance questions. Please call us at 631-591-3000.
Self-Pay Bundle Includes
✅ GI Procedure
✅ Anesthesia
✅ Pathology
No surprise facility bills.
See Why Patients Trust East End Gastroenterology
We’re proud of the feedback we’ve received from patients across Long Island.
Read our reviews:
East End Gastroenterology online reviews
Meet Dr. Mark Coronel
Learn more about Dr. Coronel’s background, training, and experience:
