Quick answers
- Which hospitals does Gregory J. Orloff work at?
- Medicare's official clinician data lists Gregory J. Orloff at 1 hospital: Inova Fairfax Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory J. Orloff see patients?
- Medicare's clinician data lists 1 practice location in Fairfax, VA. Call before your visit to confirm the address.
- What is Gregory J. Orloff's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Gregory J. Orloff accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory J. Orloff 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 J. Orloff?
- (703) 280-5390, as listed in official Medicare / NPI Registry data.
- What is Gregory J. Orloff's NPI number?
- 1750358776. 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 J. Orloff works
Medicare's Facility Affiliation Data lists Gregory J. Orloff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · CCN 490063
Practice locations
Addresses where Gregory J. Orloff is enrolled with Medicare (CMS data updated 2026-10-02).
- 8613 Route 29, 200nFairfax, VA 22031 (703) 280‑5390
Group practices
Medicare enrollment lists Gregory J. Orloff as a member of this group (CMS data updated 2026-10-02).
- Virginia Cancer Specialists, P.C.82 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Fairfax
Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750358776 |
| 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