Quick answers
- Which hospitals does Violeta Grivej work at?
- Medicare's official clinician data lists Violeta Grivej at 1 hospital: Trinity Health Oakland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Violeta Grivej see patients?
- Medicare's clinician data lists 1 practice location in Pontaic, MI. Call before your visit to confirm the address.
- What is Violeta Grivej's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Violeta Grivej accept Medicare assignment?
- Yes. Medicare's clinician data says Violeta Grivej 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 Violeta Grivej?
- (248) 283-1100, as listed in official Medicare / NPI Registry data.
- What is Violeta Grivej's NPI number?
- 1699845644. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Violeta Grivej works
Medicare's Facility Affiliation Data lists Violeta Grivej at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · CCN 230029
Practice locations
Addresses where Violeta Grivej is enrolled with Medicare (CMS data updated 2026-10-02).
- 44405 Woodward AvePontaic, MI 48341 (248) 283‑1100
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pontaic
Clinicians with the same Medicare primary specialty in Pontaic, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699845644 |
| 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