Frequently Asked Questions
What are the most common Medicare Advantage complaints?
The most common Medicare Advantage complaints are: prior authorization denials for needed services, narrow provider networks that exclude preferred doctors or specialists, unexpected out-of-pocket costs not clearly explained at enrollment, formulary changes mid-year affecting prescription coverage, and difficulty getting referrals to specialists. Most of these issues have formal appeal rights and resolution processes that many seniors don't use.
How do I appeal a Medicare Advantage denial?
File a formal appeal within the timeframes: Level 1 (plan reconsideration) — file within 60 days of denial notice, plan has 30 days to decide (72 hours for urgent situations). Level 2 (independent review) — if Level 1 denied, automatically goes to an Independent Review Entity (IRE). Level 3 (ALJ hearing) — if IRE upholds denial. At each level, include a letter from your doctor documenting medical necessity. Appeals succeed in 40–50% of cases.
Can Medicare Advantage change my drugs mid-year?
Plans are generally not allowed to remove drugs from their formulary mid-year or move drugs to higher tiers mid-year — with exceptions for safety recalls and generic conversions. If this happens, you have rights: you can request a formulary exception, file a grievance with the plan, or call 1-800-MEDICARE. Mid-year formulary changes affecting existing patients are often plan violations worth reporting.
What is a Medicare Advantage grievance?
A grievance is a formal complaint about any aspect of your plan's service or conduct — not about a specific coverage denial (that's an appeal). Examples: a plan representative gave wrong information, the plan's online provider directory was inaccurate, you couldn't get a timely appointment. Plans must acknowledge grievances within 24 hours and resolve them within 30 days. File at your plan's member services or online portal.
Does Medicare have an ombudsman?
Each state has a State Health Insurance Assistance Program (SHIP) that provides free, unbiased help navigating Medicare problems — not quite an ombudsman but a close equivalent. The Office of the Inspector General (OIG) handles Medicare fraud. CMS handles plan violations. For active disputes with a Medicare Advantage plan, your SHIP counselor can often help resolve issues faster than going through formal channels alone.
Medicare Advantage plans deny 17% of prior authorization requests in the first instance — and nearly half of those denials are overturned on appeal. Most seniors accept the first denial without knowing they have strong appeal rights. Here are the most common Medicare Advantage problems and exactly how to resolve each one.
Problem 1: Prior Authorization Denied
Prior authorization (PA) is a plan requirement to approve a service, procedure, or medication before you receive it. PA denials are the most common and most frustrating Medicare Advantage problem.
Your immediate rights:
- Request the specific reason for denial in writing — plans must provide this
- Ask your doctor to submit additional clinical documentation supporting medical necessity
- File a Level 1 appeal (plan reconsideration) within 60 days — plans must respond within 30 days, or 72 hours for urgent care needs
- Request an expedited appeal if your health would be seriously harmed by waiting
Approximately 40–50% of Medicare Advantage denials are reversed on appeal when supported by physician documentation. The first denial is often a starting point, not a final answer.
Problem 2: Your Doctor Left the Network
Medicare Advantage plans have provider networks — and doctors can leave networks mid-year with 30 days' notice. If a doctor you see regularly leaves your plan's network, you have options:
- Continuity of care: For ongoing treatment of a serious or chronic condition, your plan may be required to provide up to 90 days of continuity of care at in-network rates while you transition to a new provider
- Grievance: If the plan's online directory showed the doctor as in-network when you enrolled and they weren't, file a formal grievance
- AEP or Special Enrollment: A significant plan change may qualify you for a Special Enrollment Period to switch plans outside AEP
Problem 3: Unexpected Bills
Receiving a large unexpected bill after what you thought was a covered service is distressing and common. First steps:
- Request an itemized bill from the provider and compare it to your Explanation of Benefits (EOB)
- Verify the provider billed the correct plan and used your correct member ID
- Check whether the service required prior authorization that wasn't obtained
- File a plan grievance if the bill contradicts what the plan's materials stated would be covered
- Contact your State Insurance Commissioner if the bill appears to violate your plan's coverage terms
Problem 4: Medication Denied or Too Expensive
- Not on formulary: Request a formulary exception — your doctor submits documentation that the drug is medically necessary and formulary alternatives are inadequate. Plans must respond within 72 hours (24 hours expedited)
- Step therapy required: Your doctor can request a step therapy exception documenting that you already tried or cannot try the required first-step medication
- Sudden tier increase: Request a tier exception for the same tier as the previous year, documented by your doctor
- Quantity limits: Request a quantity limit exception with physician documentation of clinical need
When to Escalate Beyond the Plan
If internal plan appeals are exhausted or the plan is unresponsive, escalate to: 1-800-MEDICARE (file a complaint that goes to CMS), your State SHIP counselor (free help navigating disputes), your State Insurance Department (for billing and coverage violations), or the HHS Office of Inspector General (for fraud-related issues).
- Never accept the first denial without filing a Level 1 appeal
- Get physician documentation for every appeal — it significantly increases success rates
- File grievances separately from appeals — grievances cover service failures, appeals cover coverage denials
- Keep records of every conversation — date, representative name, what was discussed
- Call your SHIP for free help if you feel stuck — they know the system
→ Complete Medicare Appeal Guide
→ Signs to Switch Plans at AEP
→ Medicare Advantage vs Original Medicare