Quick answers
- Which hospitals does Mark D. Fierro work at?
- Medicare's official clinician data lists Mark D. Fierro at 5 hospitals: AdventHealth Rollins Brook, Ascension Seton Hays, Ascension Seton Williamson, Methodist Hospital and Methodist Hospital Stone Oak. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Fierro see patients?
- Medicare's clinician data lists 2 practice locations, including Cedar Park, TX and Killeen, TX. Call before your visit to confirm the address.
- What is Mark D. Fierro's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Mark D. Fierro accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Fierro 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.
- What is the phone number for Mark D. Fierro?
- (512) 528-7000, as listed in official Medicare / NPI Registry data.
- What is Mark D. Fierro's NPI number?
- 1720425242. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark D. Fierro works
Medicare's Facility Affiliation Data lists Mark D. Fierro at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth Rollins BrookLampasas, TX · Critical Access Hospital · CCN 451323
- Ascension Seton HaysKyle, TX · Acute Care Hospital · CCN 670056
- Ascension Seton WilliamsonRound Rock, TX · Acute Care Hospital · CCN 670041
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
Practice locations
Addresses where Mark D. Fierro is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 Medical PkwyCedar Park, TX 78613 (512) 528‑7000
- 2201 Clear Creek RdKilleen, TX 76549 (254) 526‑7523
Group practices
Medicare enrollment lists Mark D. Fierro as a member of these groups (CMS data updated 2026-10-02).
- Hospitalist Medicine Physicians of Texas PLLC686 clinicians in the group
- Usacs Integrated Acute Care Services of Texas, PLLC387 clinicians in the group
- Apotheosis Medical Group, PLLC9 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Cedar Park
Clinicians with the same Medicare primary specialty in Cedar Park, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720425242 |
| 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