Ascension Seton Williamson in Round Rock, TX
Also known as Seton Medical Center Williamson
In a medical emergency, call 911. This page is for information only.
About Ascension Seton Williamson
Ascension Seton Williamson is an acute care hospital in Round Rock, Williamson County, Texas. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. It is listed as a Level II trauma center. Its CMS Overall Hospital Quality Star Rating is 4 out of 5. It has 149 licensed beds, according to state license data via HIFLD. It meets the CMS Birthing-Friendly designation criteria for maternity care. The nearest other listed hospital is Pam Rehabilitation Hospital of Round Rock, about 0.5 mi away.
Quality ratings
How this hospital compares with the national rate on each measure group:
Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.
Emergency room times
Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.
Infections and sepsis care
- MRSA bloodstream infectionsNo different · SIR 0.31
- Catheter-associated urinary tract infections (CAUTI)No different · SIR 0.42
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.00
- Central line bloodstream infections (CLABSI)No different · SIR 1.29
- Surgical site infections after colon surgeryNo different · SIR 0.36
49% of patients with severe sepsis or septic shock received all the recommended early care steps (SEP-1). Higher is better.
SIR is the standardized infection ratio: below 1 means fewer infections than predicted for a hospital like this one. Period ending September 2025. Source: CMS Healthcare-Associated Infections and Timely and Effective Care.
What patients say
- Patient survey star rating
- Would definitely recommend71%
- Rated the hospital 9 or 1070%
- Completed surveys459
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
30.57135, -97.65334
Nearby hospitals
- Pam Rehabilitation Hospital of Round Rock351 Seton Parkway, Round Rock, TXRehabilitation hospital0.5 mi
- Baylor Scott & White Medical Center - Round Rock300 University Blvd, Round Rock, TX · Level IV traumaAcute care hospital2.1 mi
- Rock Springs700 Southeast Inner Loop, Georgetown, TXPsychiatric hospital2.7 mi
- Georgetown Behavioral Health Institute3101 S Austin Avenue, Georgetown, TXPsychiatric hospital3.4 mi
- Saint David's Georgetown Hospital2000 Scenic Drive, Georgetown, TX · Level IV traumaHospital4.4 mi
- Round Rock Medical Center2400 Round Rock Ave, Round Rock, TX · Level II traumaAcute care hospital5.5 mi
- Encompass Health Rehabilitation Hospital of Round1400 Hester'S Crossing, Round Rock, TXRehabilitation hospital6.6 mi
- Brushy Creek Family Hospital LLC230 Deer Ridge Dr, Round Rock, TXAcute care hospital6.6 mi
- Saint David's Surgical Hospital1201 West Louis Henna Boulevard, Round Rock, TXHospital6.9 mi
- Baylor Scott & White Medical Center Pflugerville2600 East Pflugerville Parkway, Pflugerville, TX · Emergency roomAcute care hospital9.0 mi
Frequently asked questions
Where is Ascension Seton Williamson located?
Ascension Seton Williamson is at 201 Seton Parkway, Round Rock, TX 78664 in Williamson County.
Does Ascension Seton Williamson have an emergency room?
Yes. Ascension Seton Williamson reports emergency services to Medicare, and patients spent a median of 179 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Ascension Seton Williamson?
Ascension Seton Williamson has a CMS Overall Hospital Quality Star Rating of 4 out of 5. The rating combines measures of mortality, safety of care, readmission, patient experience and timely and effective care, compared with hospitals nationwide.
Is Ascension Seton Williamson a trauma center?
Yes. It is listed as a Level II trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date March 2024). Trauma designations are renewed periodically, so confirm with the Texas EMS or trauma program. In an emergency, call 911: paramedics take seriously injured patients to the right trauma center.
What is the phone number of Ascension Seton Williamson?
The main phone number on record with Medicare is (512) 324-0000.
Would patients recommend Ascension Seton Williamson?
In the most recent HCAHPS patient survey (459 completed surveys), 71% of patients said they would definitely recommend the hospital, and 70% rated it 9 or 10 out of 10.
Related guides
- How CMS Hospital Star Ratings WorkThe five measure groups behind the 1 to 5 star Overall Hospital Quality Star Rating, how it is calculated and what it leaves out.
- How to Choose a Hospital to Give BirthLevels of maternal and newborn care, the CMS Birthing-Friendly designation, quality data and questions to ask on a tour.
- How to Choose a HospitalA practical checklist for planned care: insurance networks, procedure volume, quality ratings, certifications and cost estimates.
- ER Wait Times ExplainedHow triage and the Emergency Severity Index decide who is seen first, why emergency rooms get crowded and where to find timing data.