Quick answers
- Which hospitals does Athanasios Tsiouris work at?
- Medicare's official clinician data lists Athanasios Tsiouris at 3 hospitals: Anderson Regional Medical Center, Merit Health River Oaks and University of Mississippi Med Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Athanasios Tsiouris see patients?
- Medicare's clinician data lists 4 practice locations, including Flowood, MS, Meridian, MS and Jackson, MS. Call before your visit to confirm the address.
- What is Athanasios Tsiouris's specialty?
- Medicare lists Cardiac Surgery as the primary specialty, and also Thoracic Surgery.
- Does Athanasios Tsiouris accept Medicare assignment?
- Yes. Medicare's clinician data says Athanasios Tsiouris 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 Athanasios Tsiouris?
- (601) 936-2390, as listed in official Medicare / NPI Registry data.
- What is Athanasios Tsiouris's NPI number?
- 1336370576. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Athanasios Tsiouris works
Medicare's Facility Affiliation Data lists Athanasios Tsiouris at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Anderson Regional Medical CenterMeridian, MS · Acute Care Hospital · CCN 250104
- Merit Health River OaksFlowood, MS · Acute Care Hospital · CCN 250138
- University of Mississippi Med CenterJackson, MS · Acute Care Hospital · CCN 250001
Practice locations
Addresses where Athanasios Tsiouris is enrolled with Medicare (CMS data updated 2026-10-02).
- 1030 River Oaks DrFlowood, MS 39232 (601) 936‑2390
- 1400 20th Ave, Suite FMeridian, MS 39301 (601) 553‑2135
- 2500 N State StJackson, MS 39216 (601) 898‑4404
- 350 Crossgates BlvdBrandon, MS 39042 (601) 824‑8501
Group practices
Medicare enrollment lists Athanasios Tsiouris as a member of these groups (CMS data updated 2026-10-02).
- State of Mississippi - University of Mississippi Medical Center965 clinicians in the group
- Anderson Physician Alliance Inc69 clinicians in the group
- Mississippi Hma Hospitalists LLC52 clinicians in the group
Specialties
- Cardiac Surgeryprimary
- Thoracic Surgeryalso
Other cardiac surgeons in Mississippi
Clinicians with the same Medicare primary specialty in Mississippi — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336370576 |
| 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