Quick answers
- Which hospitals does Gabriela V. Ballester work at?
- Medicare's official clinician data lists Gabriela V. Ballester at 1 hospital: Providence Portland Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gabriela V. Ballester see patients?
- Medicare's clinician data lists 2 practice locations, including Portland, OR. Call before your visit to confirm the address.
- What is Gabriela V. Ballester's specialty?
- Medicare lists Hematology as the primary specialty, and also Internal Medicine.
- Does Gabriela V. Ballester accept Medicare assignment?
- Medicare's clinician data says Gabriela V. Ballester may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Gabriela V. Ballester's NPI number?
- 1598967374. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gabriela V. Ballester works
Medicare's Facility Affiliation Data lists Gabriela V. Ballester at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Portland Medical CenterPortland, OR · Acute Care Hospital · CCN 380061
Practice locations
Addresses where Gabriela V. Ballester is enrolled with Medicare (CMS data updated 2026-10-02).
Specialties
- Hematologyprimary
- Internal Medicinealso
Other hematologists in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1598967374 |
| 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