How to Read a Nursing Home's Five-Star Rating (and What the Numbers Don't Tell You)

Medicare's Five-Star rating is a useful tool for comparing nursing homes, but it's a blunt one. It can't tell you whether the food is good, whether staff know your mother's name, or what the building feels like on a Tuesday afternoon. Here's how the stars are actually calculated, what they miss, and how to use them wisely, straight from an administrator who lives with them every day.

By Oak Knoll Team

If you've started looking at nursing homes, you've probably seen the stars. Medicare's Care Compare website gives every certified nursing home in the country a rating from one to five, and most families treat it like a restaurant review: five is great, one is a warning sign, done. We understand the appeal. When you're making a hard decision under pressure, a single number feels like solid ground.

But we've been running Oak Knoll since 1948, and we've watched those stars closely for a long time. They're a useful tool. They're also a blunt one. Here's how to actually read them, straight from an administrator who lives with them every day.

What the stars are made of

The overall rating is built from three separate scores, and it's worth looking at each one instead of the total.

Health inspections. This is the biggest driver of the overall number. State surveyors visit each facility roughly once a year, plus any time a complaint comes in, and cite deficiencies on a scale from minor paperwork issues to actual harm. The rating uses the last three years of inspections, with the most recent weighted heaviest. One important quirk: this score is graded on a curve within each state, so a Missouri facility's inspection stars only compare to other Missouri facilities.

Staffing. This measures how many nursing hours residents receive per day, based on payroll data the facility submits. In recent years it has also started counting staff turnover and weekend staffing, which are good additions, because a building with a stable team feels very different from one with a new face every shift.

Quality measures. These track outcomes like falls with injury, pressure ulcers, hospital readmissions, and use of antipsychotic medications. Some come from hospital claims; most come from assessments the facility itself completes.

What the numbers can't see

Here's the candid part. The stars measure real things, but they measure a narrow slice.

They don't measure whether the food is good, whether someone learns your mother's name in the first week, or whether the activities calendar is a real calendar or a laminated sheet from 2019. They don't capture whether staff stop in the hallway to talk with residents or whether the building is quiet and lonely at 2 p.m. on a Tuesday. Those are the things families ask us about most, and none of them show up in the rating.

The inspection score also has a long memory. A rough survey can weigh on a facility for three years even after every issue has been corrected and re-verified. On the flip side, a building can coast on a good survey from two years ago while things slip. Always check the date of the most recent inspection and, if you're curious, read the actual report. It's public.

Quality measures depend partly on self-reported data, which means an honest facility that documents carefully can sometimes look worse on paper than one that doesn't.

And a single point on the scale can hinge on where a facility lands relative to its neighbors, not on any change in the building itself.

How we'd suggest using them

Use the stars as a filter, not a verdict. A one-star facility deserves hard questions. A five-star facility deserves them too. Then do what no website can do for you: visit. Come at mealtime. Come on a weekend. Talk to the aides, not just the admissions office. Ask how long the director of nursing has been there. Ask what happened on the last survey and what changed afterward. A facility that answers that question openly is telling you something the stars never will.

We're glad to walk you through Oak Knoll's own ratings, including what we're proud of and what we're working on. That conversation is always open. Call us or stop by at 37 N. Clark Avenue in Ferguson.

-Oak Knoll Care Team