Quick answer: The federal government (CMS) rates every certified nursing home from one to five stars. The overall star is a blend of three separate scores: health inspections, staffing, and quality measures. The health-inspection score is the most reliable, because it comes from unannounced in-person state surveys rather than data the facility reports about itself. A five-star home is rated much above average, a one-star home much below.
Every nursing home that accepts Medicare or Medicaid is rated by the Centers for Medicare and Medicaid Services on Care Compare, the lookup tool at Medicare.gov. Understanding what the stars actually measure lets you read past a marketing-friendly overall number to the parts that matter. This guide explains where each score comes from, how often the numbers change, why a five-star home can still hurt someone, and how California's own citation records fill the gaps the federal stars leave open.
The three scores behind the overall star
The overall star rating is not a single measurement. It is a combination of three components, and they are not equally trustworthy.
| Component | What it measures | Where the data comes from | How much to trust it |
|---|---|---|---|
| Health inspections | Deficiencies found during in-person state surveys | Unannounced on-site inspections by state surveyors | Most reliable. It does not rely on self-reported data. |
| Staffing | Nursing and aide hours per resident per day | Payroll-based records reported to CMS | Reliable, and closely tied to quality of care. |
| Quality measures | Clinical outcomes such as pressure ulcers, falls, and mobility | Largely data the facility submits about itself | Read with the most caution, since it is self-reported. |
If a home shows a high overall rating but a low health-inspection score, that is worth noticing. A strong overall number can rest on self-reported quality measures while the independent inspection score sits lower.
How CMS turns three scores into one overall star
CMS starts with the health-inspection score and treats it as the base. The staffing score and the quality-measures score can then push the overall rating up or down, generally by no more than a star each. A home with a very low inspection score is limited in how far the other two components can lift it.
That design tells you something useful. The inspection score anchors the rating on purpose, because it is the one piece built on independent observation. When you compare two homes, compare their inspection scores first and let the overall star come second.
In California, the inspections behind that score are performed by the California Department of Public Health (CDPH), which surveys facilities on behalf of the federal government. Surveyors walk the halls, review charts, interview residents and families, and cite the facility for each violation they find. Those citations are tagged with federal deficiency codes, called F-tags, and weighted by how severe the harm was and how many residents were at risk.
What the star levels mean
CMS assigns the overall star roughly on a curve: five stars means quality much above average, four above average, three average, two below average, and one much below average. Statewide in California, about 44% of homes rate four or five stars and about 35% rate one or two.
Because the ratings grade homes against each other rather than against a fixed safety standard, a three-star home is not "safe" in any absolute sense. It is average for its state. If the average home in a region is short-staffed, an average rating just means a home is short-staffed like its neighbors.
Which parts of the rating are self-reported
Two of the three components lean on data the facility itself supplies. Staffing comes from payroll records the facility submits to CMS. Payroll data is harder to inflate than the old self-reported staffing forms, but the facility still controls the submission. Quality measures come largely from clinical assessments the facility's own staff complete on each resident, covering outcomes like pressure sores, falls with injury, weight loss, and mobility decline.
Think about the incentive for a moment. The same organization being graded on bedsores is the one recording whether a bedsore exists and what stage it is. A facility that under-documents pressure sores or falls looks better on paper, and families have no easy way to check the underlying charts.
The health-inspection component works the other way. State surveyors show up unannounced, look at residents directly, and write down what they find whether the facility likes it or not. That is the reason this guide, and most researchers, keep pointing you back to the inspection score.
How often the ratings update
Care Compare refreshes its data monthly, so a home's stars can shift from one month to the next as new inspection results, staffing submissions, and quality data post. Staffing data flows in quarterly through the payroll-based reporting system. Standard health inspections happen roughly once a year, and federal law caps the gap between them at 15 months.
Two practical points follow from that schedule. First, a rating you looked up six months ago may be stale, so check again before you rely on it. Second, the inspection score can rest on a survey that is many months old. A home can decline badly between surveys, and the stars will not show it until inspectors return or a complaint brings them in early. If you see problems now, report them now rather than waiting for the rating to catch up. Our guide on how to report nursing home abuse in California explains who to call.
Staffing and the numbers to watch
Staffing is the single number most closely tied to whether a home catches a problem early. CMS reports total nursing hours per resident per day, and California's average is about 4.52. A home reporting well below that, especially with low registered-nurse time, is a home where residents are more likely to be left waiting.
Look past the star to the actual hours, which Care Compare lists for each facility. Pay attention to the registered-nurse portion separately, because RNs are the staff trained to spot a brewing infection or a wound that is getting worse. Weekend staffing is worth a glance too, since many facilities run thinner on Saturdays and Sundays and Care Compare now shows weekend levels.
Understaffing sits behind most of the harm we see in nursing home neglect cases: missed repositioning that becomes a pressure sore, unanswered call lights that become falls, rushed meals that become weight loss. If the staffing numbers are low, assume the daily reality is worse than the brochure.
The abuse icon
Some homes carry a red hand-and-shape abuse icon on their Care Compare profile. CMS applies it to facilities cited for abuse-related deficiencies on recent inspections. About one in ten California homes currently carries it. It is a serious signal worth a close look.
The icon also caps how the facility's ratings display, so a flagged home cannot present a spotless profile. If a home you are considering carries the icon, read the inspection reports behind it before you go further, and ask the administrator directly what happened and what changed.
Why a five-star home can still be dangerous
A five-star rating is an average across an entire building over a period of months. It says nothing certain about the wing your mother lives on, the aide assigned to her hall tonight, or the weekend shift that is short two people. Homes with strong ratings still get cited for serious violations, and families of residents in well-rated facilities still call us about signs of neglect they watched develop in real time.
There are structural reasons for the gap. Two of the three scores rely on the facility's own data. Inspections are a snapshot taken roughly once a year, and facilities often know the general window when surveyors are due. Ratings grade on a curve rather than against an absolute standard. And the stars measure the facility, not the corporate owner; a chain can operate both well-rated and troubled buildings, which is why our operator pages group California facilities by the company behind them.
We say this from experience on the other side. Thomas Wallin and Michael Young defended nursing homes before they represented families, and they saw how much effort goes into managing the numbers a facility reports. The stars are a screening tool. Your own eyes, visits at odd hours, and the underlying inspection reports are the real test.
If your loved one was injured in a facility, the star rating will not answer what happened to them, but their records will. Young & Wallin reviews those records for free. Call (888) 999-0169 or contact us online for a free consultation. There is no fee unless we win.
What the federal stars miss: California's own citation record
CMS ratings do not show California's state citations, and those citations are often the sharpest picture of what went wrong inside a facility. CDPH issues its own citations under state law. A class AA citation is a class A violation that the Department of Public Health determined was a direct proximate cause of a resident's death. A class A citation is a violation the Department determined presented an imminent danger of death or serious harm to residents, or a substantial probability that death or serious physical harm would result. A class B citation is a violation the Department determined had a direct or immediate relationship to residents' health, safety or security, other than a class AA or A violation. Each carries civil penalties, and each is a formal state finding, not self-reported data.
A home can hold a decent federal rating while carrying a recent class A citation, because the two systems run on separate tracks. If you only check Medicare.gov, you never see the state's findings or fines.
That gap is why we built our California nursing home directory, which pairs the CMS star data for every facility in the state with its state citation history, inspection findings, and penalties in one place. For the wider picture, our California Nursing Home Report Card rates counties and regions, and our areas we serve pages cover the communities where these facilities operate. If a facility's record shows a pattern and you want the state to act, our guide on filing a complaint against a California nursing home walks through the CDPH process.
How to look up a home
Search the home on the federal Care Compare tool, or use our California nursing home directory, which presents the same CMS data home by home with the inspection findings and fines. To see how a whole county or a company rates, see our California Nursing Home Report Card and our operator pages.
When you pull up a profile, read it in this order:
- The health-inspection star and the actual inspection reports, especially any deficiency that harmed a resident
- Total nursing hours per resident per day, with RN hours and weekend staffing broken out
- The abuse icon, if present, and the citations behind it
- Recent complaint surveys, which show what brought inspectors in between annual visits
- On our directory, the state citation history: any class AA or A citation deserves an explanation before you tour
Then visit in person, more than once, at different times of day. Ratings screen out the worst options. They do not replace watching a dinner service or counting how long call lights go unanswered.
If a loved one was harmed
A rating helps you choose a home. It does not answer for what happened to one resident. If your loved one was neglected or injured in a California nursing home, the facility's stars will not decide the case; the medical records, staffing data, and inspection history will, and we know how to read them because we used to build the other side's defense.
Call (888) 999-0169 or reach us through our contact page for a free, confidential consultation. We are former nursing home defense attorneys who have recovered millions for elder abuse victims, and you pay nothing unless we win. More guides on choosing, monitoring, and reporting facilities are in our resources library.
Sources and authoritative references
- CMS Care Compare: https://www.medicare.gov/care-compare/
- CMS Five-Star Quality Rating System: https://www.cms.gov/medicare/health-safety-standards/certification-compliance/five-star-quality-rating-system
- California Nursing Home Report Card 2026: /resources/california-nursing-home-report-card/
Where to Report, and Who Does What
Long-Term Care Ombudsman CRISISline
Investigates abuse and neglect complaints inside long-term care facilities and advocates for the resident. Free, confidential, answered 24 hours a day.
California Department of Public Health, Licensing and Certification
Licenses skilled nursing facilities, investigates complaints and issues the citations that become public record.
Cal Health Find
The CDPH search where a complaint against a named facility is filed, and where the state inspection record for that facility is published.
Adult Protective Services
The California Department of Social Services line for abuse of an elder living in the community rather than in a licensed facility. Answered 24 hours a day, routed to the county agency by zip code.
Medicare Care Compare
The federal ratings, staffing figures and inspection findings this site publishes for every certified home, at their source.
Frequently asked questions
What is a good nursing home star rating?
Four or five stars overall is above average, but weight the health-inspection score most heavily, since it comes from independent state surveys. A five-star overall rating with a two-star inspection score is worth a second look.
Which nursing home rating is most reliable?
The health-inspection rating, because it is based on what surveyors observe in person during unannounced visits, not on data the facility reports about itself. Staffing is next most reliable, since it comes from payroll records. Treat the quality-measures score with the most caution.
Are nursing home star ratings self-reported?
Partly. The quality-measures score comes largely from clinical assessments the facility's own staff complete, and staffing comes from payroll data the facility submits. Only the health-inspection score is built entirely on independent, unannounced state surveys.
How often are Medicare.gov nursing home star ratings updated?
Care Compare refreshes monthly, so a home's stars can change as new data posts. Standard health inspections happen roughly once a year, with no more than 15 months allowed between them, so the inspection score can reflect conditions from many months ago.
Does a high star rating mean my parent will be safe?
No. A rating is a facility-wide average and a starting point, not a guarantee for an individual resident. Even a well-rated home can neglect one person, and that resident's records, not the stars, decide a claim.
Can you sue a 5-star nursing home for neglect?
Yes. A star rating is not a legal defense, and it has no bearing on whether a facility neglected a specific resident. California neglect and elder abuse claims turn on the resident's own medical records, staffing logs, and care plans. Our guide to nursing home settlement value in California explains what moves a case's value, and the statute of limitations guide covers the deadlines.
What does the abuse icon on Medicare.gov mean?
CMS places a red hand icon on the Care Compare profile of a facility cited for abuse-related deficiencies on recent inspections. About one in ten California nursing homes currently carries it. Read the inspection reports behind the icon before considering the facility.
Do CMS star ratings include California state citations?
No. CDPH's class AA, class A, and class B citations under state law are a separate enforcement track and do not appear on Medicare.gov. Our California nursing home directory publishes both the CMS data and the state citation history for each facility.
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Disclaimer: this guide is general information, not legal advice, and does not create an attorney-client relationship. Ratings data is public CMS data reported as published and may change. This page is attorney advertising.