Quick answers
- Which hospitals does John W. Thomas work at?
- Medicare's official clinician data lists John W. Thomas at 5 hospitals: Hill Country Memorial Hospital, Medina Regional Hospital, Methodist Hospital, Methodist Hospital Stone Oak and Val Verde Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John W. Thomas see patients?
- Medicare's clinician data lists 21 practice locations, including Frederickburg, TX, San Antonio, TX and Live Oak, TX. Call before your visit to confirm the address.
- What is John W. Thomas's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology.
- Does John W. Thomas accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Thomas 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 John W. Thomas?
- (830) 997-1268, as listed in official Medicare / NPI Registry data.
- What is John W. Thomas's NPI number?
- 1871560193. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John W. Thomas works
Medicare's Facility Affiliation Data lists John W. Thomas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hill Country Memorial HospitalFredericksburg, TX · Acute Care Hospital · CCN 450604
- Medina Regional HospitalHondo, TX · Critical Access Hospital · CCN 451330
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
- Val Verde Regional Medical CenterDel Rio, TX · Acute Care Hospital · CCN 450154
Practice locations
Addresses where John W. Thomas is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 21; the Medicare profile lists all.
- 1020 S State Hwy 16Frederickburg, TX 78624 (830) 997‑1268
- 1139 E Sonterra BlvdSan Antonio, TX 78258 (210) 638‑2901
- 1200 Brooklyn Ave, Suite 100San Antonio, TX 78212 (210) 617‑9900
- 12412 Judson RdLive Oak, TX 78233
- 12602 Toepperwein Rd, Suite 101Live Oak, TX 78233 (210) 617‑9700
Group practices
Medicare enrollment lists John W. Thomas as a member of these groups (CMS data updated 2026-10-02).
- South Texas Radiology Group PA89 clinicians in the group
- South Texas Radiology Imaging Centers77 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Frederickburg
Clinicians with the same Medicare primary specialty in Frederickburg, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871560193 |
| 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