Quick answers
- Which hospitals does John Sarantopoulos work at?
- Medicare's official clinician data lists John Sarantopoulos at 2 hospitals: University Health System and UT Health San Antonio Multispecialty & Research Ho…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Sarantopoulos see patients?
- Medicare's clinician data lists 4 practice locations, including San Antonio, TX. Call before your visit to confirm the address.
- What is John Sarantopoulos's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Internal Medicine.
- Does John Sarantopoulos accept Medicare assignment?
- Yes. Medicare's clinician data says John Sarantopoulos 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 John Sarantopoulos offer telehealth?
- Medicare's clinician data says John Sarantopoulos offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John Sarantopoulos?
- (210) 450-9000, as listed in official Medicare / NPI Registry data.
- What is John Sarantopoulos's NPI number?
- 1861495343. 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 Sarantopoulos works
Medicare's Facility Affiliation Data lists John Sarantopoulos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University Health SystemSan Antonio, TX · Acute Care Hospital · CCN 450213
- UT Health San Antonio Multispecialty & Research Ho…San Antonio, TX · Acute Care Hospital · CCN 670335
Practice locations
Addresses where John Sarantopoulos is enrolled with Medicare (CMS data updated 2026-10-02).
- 7703 Floyd Curl DrSan Antonio, TX 78229 (210) 450‑9000
- 7979 Wurzbach RdSan Antonio, TX 78229
- 8311 Ewing Halsell DrSan Antonio, TX 78229
- 8431 Fredericksburg RdSan Antonio, TX 78229
Group practices
Medicare enrollment lists John Sarantopoulos as a member of this group (CMS data updated 2026-10-02).
- University of Texas Health Science Center at San Antonio1,297 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1861495343 |
| 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