Senior living & memory care

Who Actually Provides the Care: RN, LPN, CNA

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When you tour a nursing home, the people you meet fall into three roles with very different training and authority. The distinction of RN vs CNA is not a technicality — it shapes who notices when a resident is getting sick and who is legally allowed to act. Here is what each role does, and why the mix of them is one of the truest signals of a home's quality.

Last updated: July 2026History

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RN vs LPN vs CNA: who provides care in a nursing home?

A nursing home is staffed by three main direct-care roles, layered by training and responsibility. Certified nursing assistants handle the bulk of hands-on personal care. Licensed practical nurses handle medications and routine clinical tasks under supervision. Registered nurses hold the most training and the most authority, assessing residents and directing the care plan. Nursing homes exist to provide skilled nursing care and around-the-clock supervision, which is the very reason this layered team is required rather than optional 1. Understanding the difference between an RN vs CNA, and the LPN in between, is the foundation for reading a home's staffing honestly.

These three are not the only people in a nursing home — there are also therapists, social workers, dietary and activities staff, and a director of nursing who oversees the clinical team — but the RN, LPN, and CNA are the ones delivering direct nursing care hour to hour. They are also the roles the federal staffing data tracks, which is why they are the ones to understand first.

What a certified nursing assistant (CNA) does

The certified nursing assistant is the person your parent will see most. CNAs provide the everyday personal care that fills a resident's day: helping with bathing, dressing, grooming, toileting, eating, and moving from bed to chair, along with tasks like taking vital signs and reporting changes to a nurse. They complete a state-approved training program and a competency exam, but they are not licensed nurses and do not give most medications or make clinical decisions. Because they spend the most time at the bedside, they are often the first to notice that something is wrong — which only helps if there are enough of them, and enough nurses above them to act on what they see.

A certified nursing assistant (CNA) provides hands-on personal care but is not a licensed nurse.

What a licensed practical nurse (LPN) does

A licensed practical nurse — called a licensed vocational nurse, or LVN, in some states — sits between the aide and the registered nurse. LPNs are licensed and do clinical work a CNA cannot: administering medications, performing treatments like wound dressings, monitoring residents, and charting their condition. They generally work under the direction of a registered nurse or a physician, and the scope of what they may do on their own is set by each state's nursing board. In many nursing homes the LPN runs much of the daily medication and treatment routine, while the registered nurse holds responsibility for assessment and the overall care plan.

What a registered nurse (RN) does

The registered nurse carries the most training and the widest authority of the three. RNs assess a resident's condition, develop and update the care plan, administer medications and complex treatments, respond to changes and emergencies, and supervise the LPNs and CNAs on the unit. An RN can recognize and act on a subtle change — a shift in breathing, a new confusion, an early infection — that falls outside what an aide is trained or licensed to judge. That is why the presence of registered-nurse hours, not just total staff, is one of the most important things to look at in a home.

More total staff is good; enough registered-nurse time is what lets a home catch a problem early.

Why the mix matters, not just the headcount

A home can look adequately staffed by headcount while being thin exactly where it counts. The federal staffing framework has always counted registered-nurse hours separately from nurse-aide hours, precisely because they are not interchangeable. When federal minimums briefly existed, the 2024 rule required a total of 3.48 nursing hours per resident day, carving out 0.55 of those hours for registered nurses and 2.45 for nurse aides, plus a registered nurse on site around the clock 2. The breakdown was the point: the same total looks very different depending on how much of it is RN time. Reading staffing hours per resident day by role, rather than as a single number, is how you see the mix.

In practice the three roles work as a chain: the CNA notices a change, the LPN checks and escalates it, the registered nurse judges and acts. Break any link — too few aides to notice, too little RN time to act on what they see — and the whole chain weakens. That is why the composition of a shift matters as much as its raw size.

What the staffing rules require now

The federal floor changed recently, so it is worth knowing where it stands. CMS repealed the 2024 minimum-staffing rule effective December 2025, removing the specific hours-per-resident-day minimums and the round-the-clock registered-nurse requirement, and reinstating the older standard: a registered nurse on site at least 8 consecutive hours a day, 7 days a week 3. That is a meaningful gap — it means a home can meet the federal requirement with a registered nurse present for part of the day and licensed practical nurses or aides covering the rest. With no higher federal minimum for total or RN hours, the burden of judging whether a home has enough of the right staff falls more heavily on families reading the data.

How to read a home's staffing by role

You do not have to take a home's word for its staffing. CMS Care Compare, the federal comparison tool, shows each certified nursing home's staffing measures — including its total and registered-nurse hours per resident day — alongside its overall and staffing star ratings 45. The same figures are published in a downloadable dataset for anyone comparing several homes at once 6. Those staffing measures are drawn from the Payroll-Based Journal, payroll records the facility must report, rather than from a brochure's promise. When vetting a nursing home, read the RN hours and the overall staffing ratio, not just the total, and check the staff turnover measure: a home that constantly loses and replaces its nurses and aides can look staffed on paper while feeling understaffed to residents. What makes nurse staffing (HPRD) worth trusting is a mix with real registered-nurse time in it, held steady over time.

On a tour, this turns into a few direct questions. Ask who is in the building overnight and on weekends — specifically whether a registered nurse is present or only reachable on call — and how many certified nursing assistants cover the unit your parent would live on at those hours. A confident, specific answer is itself a good sign; a vague one, or a reluctance to say, tells you something the brochure will not.

Common questions

They differ by training and authority. A certified nursing assistant gives hands-on personal care but is not a licensed nurse. A licensed practical nurse is licensed and gives medications and treatments under supervision. A registered nurse has the most training, assesses residents, builds the care plan, makes clinical judgments, and supervises the others. In a nursing home, all three work as a layered team.

Licensed nurses do. Licensed practical nurses often handle much of the routine medication and treatment schedule, and registered nurses give medications and manage more complex or higher-risk care. Certified nursing assistants generally do not administer most medications; their role is personal care, vital signs, and reporting changes up to the nurses. The exact scope is defined by each state's nursing board.

Not under the current federal standard. After CMS repealed the 2024 minimum-staffing rule effective December 2025, the requirement reverted to a registered nurse on site at least 8 consecutive hours a day, 7 days a week — not around the clock. That is why checking a specific home's registered-nurse hours, rather than assuming full-time RN coverage, matters.

Because a registered nurse can assess and act on a changing condition that an aide is not trained or licensed to judge — an early infection, a new confusion, a subtle decline. A home can have plenty of total staff hours but very little registered-nurse time, and the same total looks quite different once you separate out how much of it is RN care.

CMS Care Compare shows each certified home's total and registered-nurse hours per resident day, its staffing star rating, and its staff turnover, all drawn from payroll-based reporting rather than the facility's own description. The underlying data is also in a downloadable dataset. Read the RN share and turnover, not just the total, and compare homes in the same area.

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Staffing signals worth a closer look

  • —Almost no registered-nurse hours per resident day across several recent quarters
  • —High staff turnover paired with a one- or two-star staffing rating on Care Compare
  • —No licensed nurse reachable when you ask who is actually on the unit overnight and on weekends

This article explains the roles of registered nurses, licensed practical nurses, and certified nursing assistants and how to read a home's staffing data. Scope of practice is set by each state and varies; this is general information and does not name, rate, or recommend any specific facility.

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References

  1. 1.National Institute on Aging (NIH) (2023). Assisted Living and Nursing Homes. National Institute on Aging (NIH). link ✓Nursing homes provide skilled nursing care and 24-hour supervision, distinguishing them from assisted living.
  2. 2.Centers for Medicare & Medicaid Services (2024). Minimum Staffing Standards for Long-Term Care Facilities and Medicaid Institutional Payment Transparency Reporting Final Rule (CMS-3442-F) fact sheet. CMS.gov (U.S. Centers for Medicare & Medicaid Services). link ✓The 2024 final rule set a 3.48 total nurse hours-per-resident-day standard, including 0.55 RN and 2.45 nurse-aide hours, plus a 24/7 onsite RN (since repealed).
  3. 3.Centers for Medicare & Medicaid Services (2025). Medicare and Medicaid Programs; Repeal of Minimum Staffing Standards for Long-Term Care Facilities. Federal Register (U.S. Government). link ✓CMS repealed the 2024 minimums effective December 2025 and reinstated the prior standard of an RN on site at least 8 consecutive hours a day, 7 days a week.
  4. 4.Centers for Medicare & Medicaid Services (2026). Find Healthcare Providers: Compare Care Near You (Care Compare). Medicare.gov (U.S. Centers for Medicare & Medicaid Services). link ✓Care Compare displays each certified nursing home's staffing measures and star ratings for comparison.
  5. 5.Centers for Medicare & Medicaid Services (2026). Five-Star Quality Rating System. CMS.gov (U.S. Centers for Medicare & Medicaid Services). link ✓Staffing is one of the three domains scored into a nursing home's overall Five-Star rating.
  6. 6.Centers for Medicare & Medicaid Services (2026). Provider Information (Nursing homes including rehab services dataset). CMS Provider Data Catalog (data.cms.gov). linkCMS publishes each certified home's staffing measures, including registered-nurse hours and turnover, in a downloadable dataset.

6 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — citations link their sources. Editorial policy

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