Quick answers
- Which hospitals does Olivia Aranha work at?
- Medicare's official clinician data lists Olivia Aranha at 5 hospitals: Barnes Jewish Hospital, Barnes-Jewish West County Hospital, Christian Hospital Northeast, Memorial Hospital and Missouri Baptist Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Olivia Aranha see patients?
- Medicare's clinician data lists 7 practice locations, including Saint Louis, MO, St Louis, MO and Saint Peters, MO. Call before your visit to confirm the address.
- What is Olivia Aranha's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Internal Medicine.
- Does Olivia Aranha accept Medicare assignment?
- Yes. Medicare's clinician data says Olivia Aranha 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 Olivia Aranha?
- (314) 747-3000, as listed in official Medicare / NPI Registry data.
- What is Olivia Aranha's NPI number?
- 1386841211. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Olivia Aranha works
Medicare's Facility Affiliation Data lists Olivia Aranha at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Barnes-Jewish West County HospitalCreve Coeur, MO · Acute Care Hospital · CCN 260162
- Christian Hospital NortheastSaint Louis, MO · Acute Care Hospital · CCN 260180
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · CCN 260108
Practice locations
Addresses where Olivia Aranha is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1 Barnes Jew Hosp PlzSaint Louis, MO 63110 (314) 747‑3000
- 10 Barnes W DrSaint Louis, MO 63141
- 10 Barnes W Dr, 200 Asthma and Allergy Center Wash UnivSt Louis, MO 63141 (314) 996‑8670
- 10 Hospital DrSaint Peters, MO 63376 (800) 647‑2098
- 10 Hospital Dr Mob, 2 Bjsph Siteman Cancer CenterSt Peters, MO 63376 (800) 647‑2098
Group practices
Medicare enrollment lists Olivia Aranha as a member of this group (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386841211 |
| 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