Theresa Ong Liu Dumlao, MD
NPI 1043477441ActiveIndividual· Internal Medicine, Hematology & Oncology· Gilbert, AZ
Internal Medicine, Hematology & Oncology (MD) with Banner Cancer Center Specialists LLC, practicing in Gilbert, Arizona. Their prescriptions cost Medicare Part D more than their services did: $1,731,380 for 1,564 claims, against $63,281 paid for services in 2024. Eli Lilly and Company was the largest of 3 companies reporting payments in 2025, $84.99 in all, mostly food and beverage. Lists Banner Gateway Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1043477441 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 22, 2008 |
| Last updated in NPPES | Aug 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 32590 | AZ |
| Internal Medicine, Hematology & Oncology | 207RH0003X | P0083 | TX |
| Internal Medicine, Hematology | 207RH0000X | 25912 | AL |
| Internal Medicine, Medical Oncology | 207RX0202X | 25912 | AL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 371 |
|---|---|
| Services billed | 758 across 14 procedure codes |
| Paid by Medicare | $63,281 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,564 · 3,690 30-day fills |
|---|---|
| Patients | 373 |
| Total drug cost | $1,731,380 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Banner Cancer Center Specialists LLCGilbert, AZ · 344 clinicians
Hospital affiliations
- Banner Gateway Medical CenterGilbert, AZ
- Banner Thunderbird Medical CenterGlendale, AZ
Other facilities
- Banner Home Care-ArizonaHome health agency · Mesa, AZ
Industry payments (Open Payments)
- 2025$84.99 · 3 payments from 3 companies
- 2024$73.34 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Eli Lilly and Company | $37.85 | 1 |
| Abbvie Inc. | $30.79 | 1 |
| Daiichi Sankyo Inc. | $16.35 | 1 |
What the 2025 payments were for
- Food and Beverage$84.99 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in Arizona →