Frederick Greiner Barr, M.D.
NPI 1184620122ActiveIndividual· Internal Medicine, Hematology & Oncology· Chevy Chase, MD
Internal Medicine, Hematology & Oncology (M.D.) in Chevy Chase, Maryland, licensed in MD, with an NPI issued in June 2005. Their prescriptions cost Medicare Part D more than their services did: $1,906,573 for 629 claims, against $813,063 paid for services in 2024. Coherus Oncology, Inc. was the largest of 3 companies reporting payments in 2025, $83.99 in all, mostly food and beverage.
Overview
| NPI | 1184620122 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 23, 2005 |
| Last updated in NPPES | Nov 23, 2010 |
| Reactivated | Mar 29, 2006 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | D22775 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 316 |
|---|---|
| Services billed | 79,414 across 78 procedure codes |
| Paid by Medicare | $813,063 |
Part D prescriptions in 2024
| Prescriptions (claims) | 629 · 1,358 30-day fills |
|---|---|
| Patients | 100 |
| Total drug cost | $1,906,573 |
| Generic share | 71% of claims |
Industry payments (Open Payments)
- 2025$83.99 · 3 payments from 3 companies
- 2024$4,018 · 168 payments from 46 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coherus Oncology, Inc. | $35.28 | 1 |
| Kite Pharma, Inc. | $26.06 | 1 |
| Daiichi Sankyo Inc. | $22.65 | 1 |
What the 2025 payments were for
- Food and Beverage$83.99 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Chevy Chase
- 1689852741
- 1295600351
- 1528821873
- 1437903275
All Internal Medicine, Hematology & Oncology providers in Maryland →