Ann Butler Zimrin, M.D.
NPI 1215991179ActiveIndividual· Internal Medicine, Hematology & Oncology· Baltimore, MD
Internal Medicine, Hematology & Oncology (M.D.) with University of Maryland Oncology Associates PA, practicing in Baltimore, Maryland. Their prescriptions cost Medicare Part D more than their services did: $181,826 for 33 claims, against $22,144 paid for services in 2024. Recordati_rare_diseases_inc. reported $24.29 in payments in 2025, mostly food and beverage. Lists University of Maryland Medical Center as a hospital affiliation.
Overview
| NPI | 1215991179 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 16, 2006 |
| Last updated in NPPES | Mar 8, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | D39639 | MD |
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 - Hematology/Oncology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 106 |
|---|---|
| Services billed | 224 across 10 procedure codes |
| Paid by Medicare | $22,144 |
Part D prescriptions in 2024
| Prescriptions (claims) | 33 · 55 30-day fills |
|---|---|
| Total drug cost | $181,826 |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- University of Maryland Oncology Associates PABaltimore, MD · 62 clinicians
Hospital affiliation
- University of Maryland Medical CenterBaltimore, MD
Industry payments (Open Payments)
- 2025$24.29 · 1 payment from 1 company
- 2024$32.51 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Recordati_rare_diseases_inc. | $24.29 | 1 |
What the 2025 payments were for
- Food and Beverage$24.29 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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