Romeo Ang Mandanas, M.D.
NPI 1114974466ActiveIndividual· Internal Medicine, Hematology & Oncology· Oklahoma City, OK
Internal Medicine, Hematology & Oncology (M.D.) with Integris Ambulatory Care Corporation, practicing in Oklahoma City, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $4,698,057 for 1,529 claims, against $83,250 paid for services in 2024. Karyopharm Therapeutics Inc. was the largest of 18 companies reporting payments in 2025, $4,063 in all, mostly travel and lodging. Lists Integris Baptist Medical Center, Inc and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1114974466 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 30, 2006 |
| Last updated in NPPES | Jun 27, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 18541 | OK |
| Internal Medicine | 207R00000X | 18541 | OK |
| Internal Medicine, Hematology | 207RH0000X | 18541 | OK |
| Internal Medicine, Medical Oncology | 207RX0202X | 18541 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 397 |
|---|---|
| Services billed | 1,161 across 14 procedure codes |
| Paid by Medicare | $83,250 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,529 · 1,965 30-day fills |
|---|---|
| Patients | 195 |
| Total drug cost | $4,698,057 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Medical Oncology |
Medical group
- Integris Ambulatory Care CorporationSpencer, OK · 685 clinicians
Hospital affiliations
- Integris Baptist Medical Center, IncOklahoma City, OK
- Integris Canadian Valley HospitalYukon, OK
- Integris Health Edmond HospitalEdmond, OK
- Integris Southwest Medical CenterOklahoma City, OK
- O U Medical CenterOklahoma City, OK
Industry payments (Open Payments)
- 2025$4,063 · 44 payments from 18 companies
- 2024$4,741 · 20 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Karyopharm Therapeutics Inc. | $2,601 | 4 |
| Pfizer Inc. | $413.40 | 18 |
| Galvanize Therapeutics, Inc | $176.58 | 1 |
| Astrazeneca Pharmaceuticals LP | $164.34 | 3 |
| E.R. Squibb & Sons, L.L.C. | $151.04 | 3 |
What the 2025 payments were for
- Travel and Lodging$2,566 · 3 payments
- Food and Beverage$1,122 · 25 payments
- Consulting Fee$150.00 · 1 payment
- Education$141.31 · 14 payments
- Long term medical supply or device loan$83.33 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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