Understanding your Medicare coverage for colorectal cancer screening can feel overwhelming, but it doesn’t have to be. If you’re a Medicare beneficiary in the Inland Empire region, PromiseCare Medical Group is here to help you navigate your screening options and ensure you receive the preventive care you need at little to no cost.
This comprehensive guide explains everything you need to know about Medicare coverage for colon cancer screening, including which tests are covered, how often you can get screened, and what costs you can expect. Whether you’re turning 45 or you’re at high risk for colorectal cancer, understanding your Medicare benefits is the first step toward protecting your health.
Why Colon Cancer Screening Matters
Colorectal cancer is the second leading cause of cancer death in the United States, yet it’s also one of the most preventable cancers through regular screening. According to the American Cancer Society, an estimated 107,320 new cases of colon cancer and 46,950 new cases of rectal cancer will be diagnosed in 2025.
“Regular screening for colorectal cancer saves lives,” explains Dr. Edivina Gonzales, an internal medicine physician with PromiseCare Medical Group in Menifee. “Most colorectal cancers develop from precancerous polyps over many years. When we find and remove these polyps during screening, we can prevent cancer from ever developing.”
The U.S. Preventive Services Task Force (USPSTF) now recommends that adults begin regular colorectal cancer screening at age 45, down from the previous recommendation of age 50. This change reflects concerning trends showing increased colorectal cancer incidence in younger adults.
Complete Medicare Coverage for Screening Tests
Medicare Part B covers several types of colorectal cancer screening tests, and most are provided at no cost to you when performed by a provider who accepts Medicare assignment. Understanding which tests are covered and how often you can receive them helps you work with your primary care physician to choose the best screening strategy for your situation.
Colonoscopy Screening
Colonoscopy remains the gold standard for colorectal cancer screening because it allows your gastroenterologist to examine your entire colon and rectum while simultaneously removing any polyps found during the procedure. This dual capability makes colonoscopy both a screening and preventive tool.
Medicare Coverage Details:
- Frequency for average-risk patients: Once every 120 months (10 years)
- Frequency for high-risk patients: Once every 24 months (2 years)
- Your cost: $0 if your provider accepts Medicare assignment
- Important note: If polyps or other tissue are removed during the colonoscopy, you’ll pay 15% of the Medicare-approved amount for your provider’s services
Dr. Patrick Gonzales, an internal medicine specialist with PromiseCare Medical Group, emphasizes the importance of understanding the high-risk criteria: “Medicare considers you at high risk if you have a personal history of adenomatous polyps, colorectal cancer, or inflammatory bowel disease like Crohn’s disease or ulcerative colitis. A family history of hereditary conditions like Lynch syndrome or familial adenomatous polyposis also qualifies you for more frequent screening.”
PromiseCare Medical Group works with experienced gastroenterology practices throughout the Inland Empire, including Southland Gastroenterology Medical Group with Dr. Sreenivasa Nakka, United Medical Doctors Gastroenterology, and Dr. Milan Chakrabarty, ensuring seamless referrals for colonoscopy procedures.
Fecal Immunochemical Test (FIT)
The fecal immunochemical test is a convenient, at-home screening option that detects hidden blood in your stool, which can be an early sign of colorectal cancer or polyps.
Medicare Coverage Details:
- Frequency: Once every 12 months
- Your cost: $0 if your provider accepts Medicare assignment
- How it works: You collect a small stool sample at home using a kit provided by your doctor and return it to a laboratory for analysis
“FIT testing is an excellent option for patients who prefer non-invasive screening or who may have medical conditions that make colonoscopy more challenging,” notes Dr. Tomas Araneta, an internal medicine physician practicing in Menifee with PromiseCare. “However, it’s important to understand that if your FIT test comes back positive, you’ll need a follow-up colonoscopy to investigate the cause.”
Medicare covers follow-up colonoscopies after a positive FIT result as screening tests, meaning you pay nothing for the procedure.
Multitarget Stool DNA Test (Cologuard and Cologuard Plus)
Cologuard and the newer Cologuard Plus test represent advanced stool-based screening technology that combines DNA marker detection with a fecal immunochemical test. These tests can detect both precancerous polyps and cancer by identifying abnormal DNA shed by colorectal lesions.
Medicare Coverage Details:
- Frequency: Once every 3 years for adults ages 45-85
- Your cost: $0 if your provider accepts Medicare assignment
- How it works: You collect an entire stool sample at home and mail it to a laboratory for comprehensive analysis
- Effective date: Medicare began covering Cologuard Plus on October 3, 2024
Cologuard testing detects 92% of all colorectal cancers and 94% of stage I and II cancers, making it a highly effective non-invasive screening option. Like FIT testing, a positive Cologuard result requires a follow-up colonoscopy, which Medicare covers at no cost to you.
CT Colonography (Virtual Colonoscopy)
Starting January 1, 2025, Medicare expanded coverage to include CT colonography, a new screening option that uses advanced imaging technology to create detailed pictures of your colon and rectum without requiring sedation or a colonoscope.
Medicare Coverage Details:
- Frequency for average-risk patients: Once every 60 months (5 years)
- Frequency for high-risk patients: Once every 24 months
- Alternative frequency: Once every 48 months after a previous flexible sigmoidoscopy or colonoscopy
- Your cost: $0 if your provider accepts Medicare assignment
- Requirements: Must be age 45 or older and ordered in writing by your doctor, physician assistant, nurse practitioner, or clinical nurse specialist
“CT colonography represents an important advancement in colorectal cancer screening accessibility,” explains Dr. John Schoonmaker, a family practice physician with PromiseCare Medical Group in Menifee. “This test requires the same bowel preparation as traditional colonoscopy, but it doesn’t require anesthesia and takes only a few minutes to complete. If we find polyps or other abnormalities, we’ll still need to schedule a traditional colonoscopy for removal, but this option works well for patients who cannot tolerate sedation or who prefer a less invasive initial screening.”
Blood-Based Biomarker Tests
Medicare now covers blood-based biomarker screening tests for colorectal cancer, offering the most convenient screening option available.
Medicare Coverage Details:
- Frequency: Once every 3 years (when available)
- Your cost: $0 if your provider accepts Medicare assignment
- How it works: A simple blood draw that analyzes specific biomarkers associated with colorectal cancer
- Important note: These tests detect cancer but may not detect precancerous polyps as effectively as other screening methods
If a blood-based biomarker test returns a positive result, Medicare covers a follow-up colonoscopy as a screening test at no cost to you.
Flexible Sigmoidoscopy
Flexible sigmoidoscopy examines the rectum and lower portion of the colon using a flexible tube with a camera.
Medicare Coverage Details:
- Frequency: Once every 48 months for most people age 45 or older
- Alternative frequency: 120 months after a previous screening colonoscopy (for average-risk patients)
- Your cost: $0 if your provider accepts Medicare assignment
While flexible sigmoidoscopy can detect abnormalities in the lower colon, it examines only about 40% of the colon, which is why colonoscopy and other screening methods that examine the entire colon are generally preferred.
Understanding Screening vs. Diagnostic Procedures
One of the most important distinctions in Medicare coverage relates to the difference between screening and diagnostic procedures. This distinction affects your out-of-pocket costs.
Screening Procedures
- Performed when you have no symptoms and are at average or high risk based solely on age, family history, or previous findings
- Covered at 100% with no cost-sharing when your provider accepts Medicare assignment
- Scheduled at regular intervals based on your risk level
Diagnostic Procedures
- Performed when you have symptoms like rectal bleeding, persistent abdominal pain, unexplained weight loss, or changes in bowel habits
- Subject to standard Medicare Part B cost-sharing (coinsurance and deductible)
- Used to investigate specific symptoms or abnormal findings from previous tests
“Understanding this distinction is crucial,” emphasizes Dr. David Stanford, an internal medicine physician with PromiseCare Medical Group. “If you come in for a routine screening colonoscopy but also report symptoms like blood in your stool or persistent abdominal discomfort, the procedure may be billed as diagnostic rather than screening, which means you’ll have cost-sharing responsibilities.”
However, Medicare has implemented special rules for colonoscopies that start as screening procedures but become diagnostic when polyps are found and removed. In these cases, you’ll pay only 15% of the Medicare-approved amount for your provider’s services, with the percentage being phased in over several years.
Medicare Advantage Plan Coverage
If you’re enrolled in a Medicare Advantage plan (Part C) rather than Original Medicare, your plan must provide at least the same coverage as Original Medicare for colorectal cancer screening. However, your plan may have different rules, costs, and network restrictions.
“Medicare Advantage plans offered through PromiseCare Medical Group provide comprehensive colorectal cancer screening coverage with the added benefit of care coordination,” notes Dr. Abid Hussain, an internal medicine physician in Hemet. “Many of our Medicare Advantage patients appreciate having their screening scheduled and tracked as part of their overall preventive care plan.”
When enrolled in a Medicare Advantage plan:
- You must typically use in-network providers for full coverage
- Your plan may require prior authorization for certain screening tests
- Cost-sharing requirements may differ from Original Medicare
- Contact your plan directly to understand your specific benefits and costs
Who Should Get Screened and When
Current screening guidelines recommend different approaches based on your age and risk factors:
Average-Risk Adults
- Ages 45-75: Regular screening recommended
- Ages 76-85: Screening should be individualized based on overall health, previous screening history, and personal preferences
- Over 85: Screening generally not recommended
High-Risk Adults
You’re considered at high risk for colorectal cancer if you have:
- A personal history of colorectal cancer or adenomatous polyps
- A personal history of inflammatory bowel disease (Crohn’s disease or ulcerative colitis)
- A family history of colorectal cancer or advanced polyps in a first-degree relative (parent, sibling, or child)
- A known family history of hereditary colorectal cancer syndromes (Lynch syndrome or familial adenomatous polyposis)
- Previous radiation to the abdomen or pelvic area for cancer treatment
High-risk individuals may need to:
- Start screening before age 45
- Get screened more frequently than average-risk individuals
- Use specific screening methods like colonoscopy rather than stool-based tests
“At PromiseCare Medical Group, our primary care physicians carefully review each patient’s personal and family medical history to determine their appropriate screening schedule,” explains Dr. Jorge Martinez, an internal medicine specialist serving Corona and surrounding areas. “We coordinate closely with our gastroenterology partners to ensure high-risk patients receive appropriate surveillance.”
How to Get Started with Screening Through PromiseCare
PromiseCare Medical Group makes colorectal cancer screening convenient and accessible for Medicare beneficiaries throughout the Inland Empire:
Step 1: Schedule Your Preventive Visit
Contact your primary care physician at PromiseCare Medical Group to schedule an appointment to discuss colorectal cancer screening. If you’re new to Medicare, your initial preventive physical examination within the first year of enrollment is an ideal time to establish your screening plan.
Step 2: Discuss Your Options
Your physician will review your medical history, family history, and risk factors to recommend the most appropriate screening approach. PromiseCare’s team of board-certified family medicine and internal medicine physicians can answer your questions and address any concerns about different screening methods.
Step 3: Receive Your Screening
Depending on the screening method you choose:
- Stool-based tests: Your doctor will provide you with a collection kit and instructions for completing the test at home
- Colonoscopy or flexible sigmoidoscopy: You’ll receive a referral to a gastroenterology specialist in PromiseCare’s network
- CT colonography: Your physician will provide an order for the test at an imaging center
- Blood-based test: You can have your blood drawn at a PromiseCare office or affiliated laboratory
Step 4: Follow Up on Results
Your physician will contact you with your screening results and discuss any necessary follow-up care. If you need a diagnostic colonoscopy after a positive screening test, your care team will coordinate the scheduling and ensure you understand what to expect.
PromiseCare’s Commitment to Preventive Care
PromiseCare Medical Group operates 18 urgent care centers and works with more than 60 primary care physicians and 400 specialists throughout the Inland Empire, providing comprehensive healthcare access to Medicare beneficiaries in Riverside, San Bernardino, and surrounding counties.
Our network includes primary care providers specializing in:
- Family medicine
- Internal medicine
- Geriatric medicine
And specialists in:
- Gastroenterology
- General surgery
- Oncology
- And many other specialties
“Our focus on preventive medicine and patient-centered care means we don’t just schedule your screening—we track your results, coordinate your follow-up care, and ensure you understand your Medicare benefits every step of the way,” says Dr. Hemchand Kolli, a family practice physician with offices in Hemet and San Jacinto.
Common Questions About Medicare Coverage for Colon Cancer Screening
How do I know if my doctor accepts Medicare assignment?
When scheduling your appointment or procedure, ask whether the provider accepts Medicare assignment. Most PromiseCare physicians and specialists in our network accept assignment, which means you’ll have no out-of-pocket costs for covered screening services.
What if polyps are found during my screening colonoscopy?
If your gastroenterologist finds and removes polyps during your screening colonoscopy, you’ll pay 15% of the Medicare-approved amount for the physician’s services. This is a special Medicare rule that keeps costs low while allowing for necessary polyp removal during screening procedures.
Can I choose which type of screening test to use?
Yes, you can discuss screening options with your primary care physician and choose the method that works best for your health situation, preferences, and lifestyle. Your doctor will help you understand the benefits and limitations of each option.
What happens if my screening test is positive?
If any screening test returns a positive result, Medicare covers a follow-up colonoscopy at no cost to you (when your provider accepts assignment). Your PromiseCare care team will coordinate this follow-up and ensure you receive appropriate care.
Do I need a referral from my primary care physician?
Requirements vary depending on your insurance. Medicare beneficiaries with Original Medicare generally don’t need referrals for specialists, but those with Medicare Advantage plans may require referrals. Check with your plan or contact PromiseCare member services at 951-390-2840 for guidance.
How do I prepare for a colonoscopy?
Your gastroenterologist will provide detailed preparation instructions, which typically include:
- Following a clear liquid diet the day before your procedure
- Taking prescribed laxatives to cleanse your colon
- Arranging transportation home (you’ll be sedated and cannot drive)
- Planning to take the day off work
Are there any risks associated with screening?
All medical procedures carry some risk, but serious complications from colorectal cancer screening are rare. Your doctor will discuss specific risks based on the screening method you choose and your overall health status.
What if I’m between ages 76-85?
For adults in this age range, the decision to continue screening should be made individually with your physician, considering your overall health, previous screening history, life expectancy, and personal preferences.
Take Control of Your Colorectal Health
Colorectal cancer is highly preventable when caught early through regular screening. With comprehensive Medicare coverage and convenient access through PromiseCare Medical Group’s extensive network of physicians and specialists throughout the Inland Empire, protecting your health has never been easier.
Don’t wait for symptoms to appear—by then, cancer may already be advanced. Schedule your screening today by contacting your PromiseCare primary care physician or calling member services at 951-390-2840.
PromiseCare Medical Group Contact Information
Main Office: 1565 W. Florida Ave., Hemet, CA 92543
Phone: (951) 390-2840
TTY: 711
Toll Free: 1-877-791-9978
Hours: Monday-Friday, 8:00 AM – 5:00 PM
Website: https://promisecare.com
Medical Disclaimer: This article is for educational and informational purposes only and should not replace professional medical advice. Always consult with your physician or qualified healthcare provider about your specific health situation, screening recommendations, and treatment options. The information provided reflects current Medicare coverage policies as of January 2025 and is subject to change. For the most current coverage information, visit Medicare.gov or contact Medicare directly at 1-800-MEDICARE (1-800-633-4227).