Claudine Isaacs
NPI 1164414751ActiveIndividual· Internal Medicine, Hematology & Oncology· Washington, DC
Internal Medicine, Hematology & Oncology with Medstar Medical Group II LLC, practicing in Washington, District of Columbia. Their prescriptions cost Medicare Part D more than their services did: $67,532 for 58 claims, against $14,108 paid for services in 2024. Pfizer Inc. was the largest of 8 companies reporting payments in 2025, $42,872 in all, mostly consulting fees. Lists Medstar Georgetown University Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1164414751 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Aug 19, 2005 |
| Last updated in NPPES | Oct 24, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 20270 | DC |
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 - Medical Oncology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 81 |
|---|---|
| Services billed | 148 across 9 procedure codes |
| Paid by Medicare | $14,108 |
Part D prescriptions in 2024
| Prescriptions (claims) | 58 · 145 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $67,532 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
Hospital affiliations
- Medstar Georgetown University HospitalWashington, DC
- Medstar Washington Hospital CenterWashington, DC
Industry payments (Open Payments)
- 2025$42,872 · 39 payments from 8 companies
- 2024$24,183 · 17 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $20,207 | 11 |
| Gilead Sciences, Inc. | $10,238 | 14 |
| Astrazeneca Pharmaceuticals LP | $5,089 | 5 |
| Astrazeneca Uk Limited | $3,010 | 3 |
| Puma Biotechnology, Inc. | $2,613 | 2 |
What the 2025 payments were for
- Consulting Fee$30,390 · 15 payments
- Travel and Lodging$11,197 · 7 payments
- Food and Beverage$1,285 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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