If you have been in practice long enough, you know some insurance companies are harder to work with than others. Denials, slow payments, endless phone trees.
But which insurance company has the most complaints – from both patients and providers?
Based on data from the National Association of Insurance Commissioners (NAIC) , the Consumer Financial Protection Bureau (CFPB) , and provider surveys from 2024-2025, here are the top 5 most-complained-about health insurers in America.
How to protect your practice:
- Document medical necessity thoroughly (UHC reviews every chart)
- Use specific diagnosis codes – avoid unspecified codes
- Track prior authorizations with confirmation numbers
- Appeal every denial (UHC overturns 30-40% on appeal)
All State RCM approach: Our certified coders add medical necessity language before submission and appeal UHC denials within 48 hours.
How to protect your practice:
- Check Anthem’s medical policy before submitting new procedure codes
- Verify benefits for every Anthem patient, every visit
- Keep screenshots of eligibility responses as proof
All State RCM approach: We track Anthem policy changes daily and adjust coding accordingly.
Why Some Practices Handle These Payers Better Than Others
The difference is not luck. It is process and expertise.
Practices that succeed with difficult payers:
- Have dedicated staff tracking payer policy changes
- Use pre-submission claim review
- Appeal denials systematically within 7 days
- Maintain detailed documentation for medical necessity
Real Example: A Practice That Tamed UnitedHealthcare
A 20-provider family medicine group in Illinois was drowning in UHC denials. Their denial rate for UHC was 28% – far above their 12% average for other payers.
All State RCM implemented:
- Medical necessity templates for all UHC claims
- Pre-submission coding review focused on UHC-specific rules
- Dedicated appeal specialist for UHC only
Results after 6 months:
- UHC denial rate: 28% → 2.1%
- Recovered $340,000 in previously denied UHC claims
- Staff time spent on UHC appeals dropped by 80%
The practice owner said: “We almost dropped UHC. Now they are one of our best payers – because we have a system to beat them.”
