Quick answers
- Which hospitals does Marian Y. Williams-Brown work at?
- Medicare's official clinician data lists Marian Y. Williams-Brown at 2 hospitals: Ascension Seton Medical Center Austin and Dell Seton Medical Center at the University of TX. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marian Y. Williams-Brown see patients?
- Medicare's clinician data lists 6 practice locations, including Austin, TX. Call before your visit to confirm the address.
- What is Marian Y. Williams-Brown's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty, and also Gynecological Oncology.
- Does Marian Y. Williams-Brown accept Medicare assignment?
- Yes. Medicare's clinician data says Marian Y. Williams-Brown accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Marian Y. Williams-Brown offer telehealth?
- Medicare's clinician data says Marian Y. Williams-Brown offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marian Y. Williams-Brown?
- (512) 354-3000, as listed in official Medicare / NPI Registry data.
- What is Marian Y. Williams-Brown's NPI number?
- 1861696460. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marian Y. Williams-Brown works
Medicare's Facility Affiliation Data lists Marian Y. Williams-Brown at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Seton Medical Center AustinAustin, TX · Acute Care Hospital · CCN 450056
- Dell Seton Medical Center at the University of TXAustin, TX · Acute Care Hospital · CCN 450124
Practice locations
Addresses where Marian Y. Williams-Brown is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1301 W 38th St, 109 Tri County Prac AssocAustin, TX 78705 (512) 354‑3000
- 1400 N Ih 35Austin, TX 78701
- 1400 N Ih 35 Ll, Cl400 Tri County Prac AssocAustin, TX 78701 (512) 324‑7300
- 1500 Red River StAustin, TX 78701 (512) 324‑7000
- 1601 Trinity StAustin, TX 78712 (833) 882‑2737
Group practices
Medicare enrollment lists Marian Y. Williams-Brown as a member of these groups (CMS data updated 2026-10-02).
- Seton Family of Doctors792 clinicians in the group
- The University of Texas at Austin153 clinicians in the group
- University of Texas at Austin Dell Medical School151 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
- Gynecological Oncologyalso
Other OB-GYNs in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 2004 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1861696460 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians