San Antonio · 78258
Stone Oak Care Center
505 Madison Oak Drive
San Antonio, TX 78258
Sonterra Health Center
⌖ San Antonio, TX · Bexar County
No photos yet
Medicare overall rating 1 of 5 stars
Certified beds124
Medicare / MedicaidMedicare & Medicaid
OwnershipGovernment (hospital district)
About Sonterra Health Center
Sonterra Health Center is a 124-bed for-profit nursing home in San Antonio, TX. Medicare rates it 1 out of 5 stars overall (much below average); the average in Texas is 2.7. At its last full inspection (Jul 2026), inspectors found 9 problems, close to the Texas average of 9.4. None of the problems in its recent inspections were found to have harmed residents. Nurses and aides spend about 3 hr 32 min a day with each resident, about the same as the Texas average of 3 hr 23 min. About 55% of its nursing staff left in the past year. Medicare fined it $80,964 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 nameSonterra Health Center
LocationBexar County, Texas
Phone(210) 545-4800
Address18514 Sonterra Place, San Antonio, TX 78258 · Bexar County
CMS provider number676158
Ownership typeGovernment (hospital district)
Operating companyThe Ensign Group · 343 homes
Official inspection reportsRead them on Medicare.gov ↗
Medicare enrolled sinceNovember 28, 2007 (18 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
1 strength and 2 things to ask about in Medicare's inspection, fine and staffing records for this home. 2 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 Jun 2026.Strength
About average
- Health citations at last inspection9 (Jul 2026)Texas average: 9.4. Most citations are minor and corrected within weeks.About average
- Nurse staffing per resident3 hr 32 min a dayTexas average: 3 hr 23 minAbout average
- Nursing staff turnover55% a yearTexas average: 55%About average
Things to ask about
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- Fines and penalties3 fines totaling $80,964; 1 Medicare payment denialFederal penalties from the last three years, most recently in Apr 2025 (about 1 year ago). The national average is $30,972 per home.Ask about this
- Registered nurse time per resident15 min a dayTexas average: 26 minWorse than state average
Source: Medicare (CMS) inspection, penalty and staffing records, compared with the Texas 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 hospital26.2%State average: 25.7%About average
- Needed an emergency room visit11.6%State average: 12.3%About average
- Newly given antipsychotic drugs1.3%State average: 1.5%About average
Physical therapist time: about 12 minutes per resident a day. That is more than the state average of 4 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 injury4.6%State average: 3.3%Worse than average
- Pressure sores (bedsores)2.9%State average: 3.8%Better than average
- Given antipsychotic drugs12.2%State average: 9.6%Worse than average
- Hospital stays per 1,000 resident days1.9State average: 2.2About average
Source: Medicare (CMS) quality measures, compared with the Texas average. Lower is better for every rate shown.
Who pays, and how full it is
Many residents here pay privately or through insurance. In Texas, Medicaid pays for 66% of resident days at a typical home.
- 42% Medicaid
- 7% Medicare
- 51% Private pay, insurance and other
Beds in use, on average71%Texas typical: 67%
Cost of care per resident day$341Texas typical: $270
Shares of resident days, from the home’s Medicare cost report for the year ending September 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 1 star now, down from 4 stars in January 2019. It has ranged from 1 to 5 stars and changed 18 times.
Overall rating1★
Health inspections2★
Staffing1★
Quality of care4★
Nurse hours per resident per day3.5
20192020202120222023202420252026
Show the values by year
| Month | Overall | Inspections | Staffing | Quality | Nurse hours |
|---|---|---|---|---|---|
| Jan 2019 | 4 | 4 | 1 | 5 | 3.4 |
| Jan 2020 | 4 | 3 | 2 | 5 | 3.3 |
| Jan 2021 | 4 | 3 | 2 | 5 | 4.3 |
| Jan 2022 | 2 | 2 | 1 | 5 | 3.0 |
| Jan 2023 | 4 | 3 | 2 | 5 | 3.5 |
| Jan 2024 | 3 | 3 | 2 | 4 | 3.8 |
| Feb 2025 | 1 | 2 | 1 | 4 | 3.4 |
| Feb 2026 | 3 | 2 | 2 | 5 | 3.7 |
| Sep 2026 | 1 | 2 | 1 | 4 | 3.5 |
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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