When researching memory care or skilled nursing facilities, you'll likely encounter CMS star ratings — a 1-to-5-star rating system published by the Centers for Medicare & Medicaid Services (CMS) on its Care Compare website. These ratings are among the most objective tools available for comparing facilities, but they're often misunderstood.
Here's what the ratings actually measure, how to use them well, and what they don't tell you.
What Are CMS Star Ratings?
CMS star ratings apply to Medicare- and Medicaid-certified nursing homes and skilled nursing facilities. They were created to give consumers a standardized way to compare facility quality at a glance.
Important note: CMS star ratings apply to certified nursing homes and skilled nursing facilities — not to all memory care communities. Many standalone memory care communities are licensed as assisted living facilities at the state level and are not rated by CMS. If a facility you're considering is a standalone memory care community without a skilled nursing component, it may not appear in the CMS database.
For facilities that are rated, the system uses three component measures to calculate an overall rating.
The Three Components
1. Health Inspections (weighted most heavily)
Based on results from state health inspections, which occur at least once per year (often unannounced) and evaluate:
- Quality of care provided to residents
- Residents' rights protections
- Environmental safety
- Medication management
- Infection control
Inspections also incorporate any substantiated complaint investigations conducted during the survey cycle. The health inspection score is the most direct measure of whether regulators have identified problems at the facility.
Star scale: 1 star = many citations or deficiencies; 5 stars = very few or no deficiencies
2. Staffing
Based on payroll data submitted to CMS, measuring:
- Total nursing hours per resident per day — registered nurses (RNs), licensed practical nurses (LPNs), and certified nursing assistants (CNAs) combined
- RN hours per resident per day — a separate metric, since RNs provide higher-level clinical oversight
Staffing is adjusted for the acuity (care complexity) of the resident population — a facility serving residents with higher care needs is benchmarked differently than one serving lower-acuity residents.
Staffing matters enormously in dementia care. Higher staffing ratios are consistently associated with better resident outcomes, fewer hospitalizations, and lower rates of restraint and psychotropic medication use.
Star scale: 1 star = significantly below average staffing; 5 stars = significantly above average
3. Quality Measures
Based on clinical data from resident assessments, covering outcomes like:
- Percentage of residents with pressure injuries
- Percentage of residents with worsening pain
- Use of antipsychotic medications (particularly relevant for dementia care)
- Percentage of residents with falls resulting in major injury
- Unplanned hospitalizations
- Successful discharge to community
The antipsychotic medication measure is especially useful when evaluating memory care: high antipsychotic use often indicates that the facility is using medication to manage behavioral symptoms rather than non-pharmacological approaches.
Star scale: 1 star = poor quality measure performance; 5 stars = strong performance
How the Overall Rating Is Calculated
The overall star rating is not simply an average of the three components. The methodology gives primary weight to health inspections, then adjusts upward or downward based on staffing and quality measures. A facility must earn 4 or 5 stars on the health inspection component to achieve an overall 5-star rating.
How to Use CMS Ratings Effectively
Use them as a screening tool, not a final verdict. A 1- or 2-star facility is worth serious scrutiny. A 5-star facility is worth a closer look — but ratings don't capture everything.
Look at each component separately. A 4-star overall rating with a 2-star health inspection score is a red flag regardless of high staffing numbers. Dig into the components.
Read the actual inspection reports. Behind the health inspection star is a list of specific deficiencies. A facility might have one serious deficiency or many minor ones — the nature matters. CMS makes full inspection reports available on Care Compare. Look for deficiencies related to abuse, neglect, medication errors, and infection control.
Check the trend. A facility that has improved from 2 stars to 4 stars over two years may be worth more confidence than one that was 5 stars and has recently slipped. CMS shows historical ratings.
Compare to local averages. Star ratings are relative — a 3-star facility in a high-performing state may actually be better than a 4-star facility in a state with lower overall standards.
What CMS Ratings Don't Tell You
Most standalone memory care communities aren't rated. If you're evaluating an assisted-living-licensed memory care community (no skilled nursing), it won't appear in the CMS database. State inspection records may be available through your state's health department website, but the format is less standardized.
They don't capture culture and environment. The warmth of staff interactions, the quality of activities programming, the community atmosphere, the responsiveness of leadership — none of this is captured in a star rating.
They're a lagging indicator. Ratings reflect the past. A facility can change ownership, lose key staff, or significantly decline between inspection cycles without the rating reflecting it yet.
They don't measure dementia-specific quality. CMS quality measures are designed for the general nursing home population. There's no specific measure for wandering safety, dementia programming quality, or how well the facility manages behavioral symptoms without medication.
Practical Steps When Evaluating a Facility
- Search the facility on CMS Care Compare and note the overall rating and each component.
- Click through to the health inspection details and read recent deficiencies.
- Check the antipsychotic medication quality measure — this is particularly informative for memory care.
- If the facility has a skilled nursing component, ask what percentage of residents are on antipsychotics.
- Visit in person — ideally unannounced or at an off-peak time like early evening or a weekend.
- Talk to residents' family members if you can. Their direct experience is valuable.
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