Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory J Orloff, M.D.
Hematology & Oncology Physician in Fairfax, VA · enumerated 2006 · practices at Virginia Cancer Specialists, P.C..
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750358776
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0870-007 | Other | VA | BCBS NCA-CARE FIRST |
| 541795091 | Other | VA | TRICARE |
| 541795091 | Other | VA | ONE HEALTH PLAN |
| 541795091 | Other | VA | PHCS PPO/POS |
| 9957071006 | Other | VA | CIGNA HMO |
| 112926 | Other | VA | KAISER |
| 504739 | Other | VA | NCPPO |
| 500617-5688105 | Other | VA | AETNA PPO |
| 541795091 | Other | VA | FX CTY COMM HEALTH |
| 220671 | Other | VA | TRIGON./ANTHEM |
| 316256-520424 | Other | VA | MAMSI/OP CHOICE/ALLIANCE |
| 9957071003 | Other | VA | CIGNA POS/PPO |
| 1750358776 | Medicaid | VA | - |
| 3600121 | Other | VA | UNITED HEALTHCARE |
| 500617-776293 | Other | VA | AETNA HMO |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-24.