Quick answers
- Which hospitals does Gregory A. Bortoff work at?
- Medicare's official clinician data lists Gregory A. Bortoff at 5 hospitals: Blessing Hospital, Good Samaritan Hospital Medical Center, St Francis Hospital - The Heart Center, Tristar Centennial Medical Center and Uphs Marquette DLP Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Bortoff see patients?
- Medicare's clinician data lists 13 practice locations, including Flint, MI, Hannibal, MO and Cary, NC. Call before your visit to confirm the address.
- What is Gregory A. Bortoff's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Gregory A. Bortoff accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Bortoff 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 Gregory A. Bortoff?
- (810) 262-9000, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Bortoff's NPI number?
- 1295768596. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Bortoff works
Medicare's Facility Affiliation Data lists Gregory A. Bortoff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Blessing HospitalQuincy, IL · Acute Care Hospital · CCN 140015
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · CCN 330286
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · CCN 330182
- Tristar Centennial Medical CenterNashville, TN · Acute Care Hospital · CCN 440161
- Uphs Marquette DLP HospitalMarquette, MI · Acute Care Hospital · CCN 230054
Practice locations
Addresses where Gregory A. Bortoff is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 13; the Medicare profile lists all.
- 1 Hurley PlzFlint, MI 48503 (810) 262‑9000
- 100 Medical DrHannibal, MO 63401 (217) 223‑8400
- 104 Beech Slope WayCary, NC 27518 (615) 312‑0600
- 117 Serenity PointLittleton, NC 27850 · Radiology Associates of Southwest Louisiana (866) 772‑1655
- 117 Serenity PtLittleton, NC 27850 · Empire State Radiology P C (718) 223‑4685
Group practices
Medicare enrollment lists Gregory A. Bortoff as a member of these groups (CMS data updated 2026-10-02).
- Radiology Alliance PC455 clinicians in the group
- Blessing Hospital421 clinicians in the group
- Northside Radiology Associates LLC385 clinicians in the group
- Hurley Medical Center342 clinicians in the group
- Imaging Associates of Indiana PC301 clinicians in the group
- Columbus Radiology Corp292 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Flint
Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295768596 |
| 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