Robert Alan Nussbaum, M.D.
NPI 1659364511ActiveIndividual· Internal Medicine, Gastroenterology· Alexandria, VA
Internal Medicine, Gastroenterology (M.D.) in Alexandria, Virginia, trained at Icahn School of Medicine at Mount Sinai (class of 1986). In 2024 Medicare paid $108,974 for 476 patients, and Part D covered 711 of their prescriptions, 84% of them generic. Gilead Sciences, Inc. reported $124.99 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1659364511 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 25, 2005 |
| Last updated in NPPES | Mar 2, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 0101047887 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 476 |
|---|---|
| Services billed | 1,011 across 13 procedure codes |
| Paid by Medicare | $108,974 |
Part D prescriptions in 2024
| Prescriptions (claims) | 711 · 1,391 30-day fills |
|---|---|
| Patients | 349 |
| Total drug cost | $86,539 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Gastroenterology |
Medical group
- Privia Medical Group, LLCFairfax, VA · 1,533 clinicians
Hospital affiliations
- Inova Alexandria HospitalAlexandria, VA
- Inova Fairfax HospitalFalls Church, VA
- Inova Mount Vernon HospitalAlexandria, VA
Industry payments (Open Payments)
- 2025$124.99 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $124.99 | 1 |
What the 2025 payments were for
- Food and Beverage$124.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 gastroenterologists in Alexandria · All gastroenterologists in Virginia