Portola Valley · 94028
The Sequoias
501 Portola Road
Portola Valley, CA 94028
Atherton Park Post-acute
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⌖ Menlo Park, CA · San Mateo County
No photos yet
Medicare overall rating 4 of 5 stars
Certified beds160
Medicare / MedicaidMedicare & Medicaid
OwnershipFor-profit (limited liability company)
About Atherton Park Post-acute
Atherton Park Post-acute is a 160-bed for-profit nursing home in Menlo Park, CA. Medicare rates it 4 out of 5 stars overall (above average); the average in California is 3.2. At its last full inspection (Feb 2025), inspectors found 7 problems, fewer than the California average of 15.6. None of the problems in its recent inspections were found to have harmed residents. Nurses and aides spend about 3 hr 54 min a day with each resident, less than the California average of 4 hr 31 min. About 33% of its nursing staff left in the past year. It has had no federal fines in the last three years. Its quality ratings are similar for short-term rehab (4 of 5) and long-term care (5 of 5).
Written from Medicare’s published figures; nothing here is paid for or written by the home. Our methodology
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Key details
Facility nameAtherton Park Post-acute
LocationSan Mateo County, California
Phone(650) 325-8600
Address1275 Crane Street, Menlo Park, CA 94025 · San Mateo County
CMS provider number555827
Ownership typeFor-profit (limited liability company)
Operating companyKalesta Healthcare Group · 19 homes
Official inspection reportsRead them on Medicare.gov ↗
Medicare enrolled sinceJune 2, 2005 (21 years)
✓ Medicare✓ Medicaid
Certified for Medicaid; ask whether a Medicaid bed is available.
Quality & inspections
Explore this facility's official CMS inspection history, staffing levels and quality measures below — sourced directly from Medicare's public records.
Ratings and inspection data on this page come directly from CMS's public records and are never altered for any paid listing. Medicare data as of September 2026.
What Medicare found
3 strengths and 2 things to ask about in Medicare's inspection, fine and staffing records for this home. 3 care-quality measures are worse than the state average in the rehab and long-term care section below.
Strengths
- Serious health citationsNone on recordNo citations for actual harm or immediate jeopardy since Feb 2025.Strength
- Fines and penaltiesNoneNo federal fines or payment denials in the last three years.Strength
- Health citations at last inspection7 (Feb 2025)California average: 15.6. Most citations are minor and corrected within weeks.Strength
About average
- Nursing staff turnover33% a yearCalifornia average: 37%About average
Things to ask about
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- Nurse staffing per resident3 hr 54 min a dayCalifornia average: 4 hr 31 minWorse than state average
- Registered nurse time per resident27 min a dayCalifornia average: 40 minWorse than state average
Source: Medicare (CMS) inspection, penalty and staffing records, compared with the California average. Problems may have been corrected since; ask the home about anything listed here. How we choose these
Short-term rehab or long-term care?
Medicare rates these separately, and many homes are better at one than the other.
Short-term rehab
For a stay of a few weeks after a hospital visit, such as after surgery or a stroke.
- Sent back to the hospital34.5%State average: 23.0%Worse than average
- Needed an emergency room visit12.4%State average: 11.2%About average
- Newly given antipsychotic drugs1.2%State average: 1.5%About average
Physical therapist time: about 8 minutes per resident a day. That is more than the state average of 6 minutes. If rehab is the goal, ask how many therapy sessions a week to expect.
Long-term care
For residents who live at the home for months or years.
- Falls with a major injury2.4%State average: 1.6%Worse than average
- Pressure sores (bedsores)2.9%State average: 4.3%Better than average
- Given antipsychotic drugs9.6%State average: 12.0%Better than average
- Hospital stays per 1,000 resident days3.2State average: 2.2Worse than average
Source: Medicare (CMS) quality measures, compared with the California average. Lower is better for every rate shown.
Who pays, and how full it is
Many residents here pay privately or through insurance. In California, Medicaid pays for 7% of resident days at a typical home.
- 9% Medicaid
- 8% Medicare
- 84% Private pay, insurance and other
Beds in use, on average95%California typical: 90%
Cost of care per resident day$501California typical: $464
Shares of resident days, from the home’s Medicare cost report for the year ending December 2024. The cost per day is what care costs the home to provide, not the price you would pay; ask the home for its private-pay rate. A busy home may have fewer open beds, so ask about availability.
Ratings over time
Its overall Medicare rating is 4 stars now, up from 2 stars in January 2019. It has ranged from 1 to 4 stars and changed 8 times.
Overall rating4★
Health inspections3★
Staffing3★
Quality of care5★
Nurse hours per resident per day3.9
20192020202120222023202420252026
Show the values by year
| Month | Overall | Inspections | Staffing | Quality | Nurse hours |
|---|---|---|---|---|---|
| Jan 2019 | 2 | 1 | 4 | 2 | 3.8 |
| Jan 2020 | 2 | 1 | 5 | 3 | 3.8 |
| Jan 2021 | 2 | 1 | 5 | 4 | 4.5 |
| Jan 2022 | 1 | 1 | 3 | 3 | 3.9 |
| Jan 2023 | 2 | 1 | 1 | 5 | 2.9 |
| Jan 2024 | 1 | 1 | 3 | 4 | 4.0 |
| Feb 2025 | 1 | 1 | 2 | 4 | 4.1 |
| Feb 2026 | 4 | 3 | 3 | 5 | 3.9 |
| Sep 2026 | 4 | 3 | 3 | 5 | 3.9 |
Source: Medicare (CMS) monthly Care Compare releases since 2019. Medicare has changed how some ratings are calculated over the years and paused most inspections in 2020, so some jumps reflect rule changes rather than changes at the home. Our methodology
See the full inspection reportEvery citation, fine, staffing figure and quality measure Medicare publishes for this home
From Medicare’s September 2026 data. Each inspection is dated below; staffing comes from payroll records for a recent quarter, and resident outcomes cover the latest period Medicare reports.
Inspection summary
How this facility compares to state and national averages on CMS-reported problems.
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Three-survey history
Citation counts across this facility's three most recent inspection cycles, so you can see whether problems are trending up, down, or holding steady.
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