Ali Reza Assefi, MD
NPI 1275531832ActiveIndividual· Internal Medicine, Nephrology· Fairfax, VA
Internal Medicine, Nephrology (MD) with Nephrology Associates of Northern Virginia Inc, practicing in Fairfax, Virginia. Their prescriptions cost Medicare Part D more than their services did: $964,686 for 4,239 claims, against $270,073 paid for services in 2024. Novo Nordisk Inc was the largest of 22 companies reporting payments in 2025, $20,925 in all, mostly speaking and faculty fees. Lists Inova Fair Oaks Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1275531832 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 8, 2005 |
| Last updated in NPPES | Aug 12, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 0101045348 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (DC); Practitioner - Nephrology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 877 |
|---|---|
| Services billed | 3,791 across 24 procedure codes |
| Paid by Medicare | $270,073 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,239 · 10,710 30-day fills |
|---|---|
| Patients | 529 |
| Total drug cost | $964,686 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Nephrology |
Medical group
- Nephrology Associates of Northern Virginia IncFairfax, VA · 15 clinicians
Hospital affiliations
- Inova Fair Oaks HospitalFairfax, VA
- Inova Fairfax HospitalFalls Church, VA
- Inova Loudoun HospitalLeesburg, VA
- Reston Hospital CenterReston, VA
- Uva Health Haymarket Medical CenterHaymarket, VA
Other facilities
- Davita Ashburn DialysisDialysis facility · Ashburn, VA
- Davita Cdc Sterling DialysisDialysis facility · Sterling, VA
- Davita Lansdowne DialysisDialysis facility · Leesburg, VA
- Davita Leesburg Virginia DialysisDialysis facility · Leesburg, VA
Industry payments (Open Payments)
- 2025$20,925 · 89 payments from 22 companies
- 2024$2,717 · 71 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $10,762 | 8 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $6,355 | 9 |
| Lilly USA, LLC | $2,450 | 4 |
| Novartis Pharmaceuticals Corporation | $226.12 | 18 |
| Amgen Inc. | $140.22 | 7 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$19,395 · 13 payments
- Food and Beverage$1,465 · 73 payments
- Education$64.81 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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