Catherine Hall Van Poznak, MD
NPI 1225109242ActiveIndividual· Internal Medicine, Medical Oncology· Ann Arbor, MI
Internal Medicine, Medical Oncology (MD) in Ann Arbor, Michigan, trained at Js Weill Medical College, Cornell University (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $629,768 for 527 claims, against $19,058 paid for services in 2024. Astrazeneca Pharmaceuticals LP reported $68.49 in payments in 2025, mostly education.
Overview
| NPI | 1225109242 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 13, 2006 |
| Last updated in NPPES | Jan 26, 2024 |
| Certified by provider | Jan 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 4301087100 | MI |
| Internal Medicine | 207R00000X | 4301087100 | MI |
| Internal Medicine, Hematology | 207RH0000X | 4301087100 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 88 |
|---|---|
| Services billed | 255 across 14 procedure codes |
| Paid by Medicare | $19,058 |
Part D prescriptions in 2024
| Prescriptions (claims) | 527 · 1,219 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $629,768 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliation
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
- 2025$68.49 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $68.49 | 1 |
What the 2025 payments were for
- Education$68.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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