Susanna V. Ulahannan, M.D.
NPI 1033369988ActiveIndividual· Internal Medicine, Hematology & Oncology· Ponca City, OK
Internal Medicine, Hematology & Oncology (M.D.) with Ou Health Partners Inc, practicing in Ponca City, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $884,310 for 683 claims, against $32,180 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 5 companies reporting payments in 2025, $597.87 in all, mostly food and beverage. Lists O U Medical Center as a hospital affiliation.
Overview
| NPI | 1033369988 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 29, 2008 |
| Last updated in NPPES | May 15, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 30484EFF | OK |
| Internal Medicine, Hematology | 207RH0000X | 30484EFF | OK |
| Internal Medicine, Medical Oncology | 207RX0202X | 30484EFF | OK |
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) | Enrolled Practitioner - Medical Oncology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 124 |
|---|---|
| Services billed | 324 across 9 procedure codes |
| Paid by Medicare | $32,180 |
Part D prescriptions in 2024
| Prescriptions (claims) | 683 · 740 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $884,310 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ou Health Partners IncOklahoma City, OK · 1,184 clinicians
Hospital affiliation
- O U Medical CenterOklahoma City, OK
Industry payments (Open Payments)
- 2025$597.87 · 9 payments from 5 companies
- 2024$1,538 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $227.45 | 5 |
| Histosonics, Inc. | $135.04 | 1 |
| Caris Mpi, Inc. | $133.20 | 1 |
| Pfizer Inc. | $85.75 | 1 |
| Array Biopharma Inc | $16.43 | 1 |
What the 2025 payments were for
- Food and Beverage$597.87 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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