Mona Lisa Alattar, M.D.
NPI 1558624239ActiveIndividual· Internal Medicine, Hematology & Oncology· Houston, TX
Internal Medicine, Hematology & Oncology (M.D.) with American Oncology Partners PA and 1 other group, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $5,921,846 for 1,455 claims, against $1,254,241 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 40 companies reporting payments in 2025, $2,560 in all, mostly food and beverage. Lists Houston Methodist West Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1558624239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 19, 2012 |
| Last updated in NPPES | Mar 18, 2026 |
| Certified by provider | Mar 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | P5768 | TX |
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 - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 213 |
|---|---|
| Services billed | 72,819 across 111 procedure codes |
| Paid by Medicare | $1,254,241 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,455 · 2,122 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $5,921,846 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- American Oncology Partners PAFort Wayne, IN · 391 clinicians
- Oncology Consultants, P. A.Pearland, TX · 34 clinicians
Hospital affiliations
- Houston Methodist West HospitalHouston, TX
- Memorial Hermann - Texas Medical CenterHouston, TX
- Memorial Hermann Hospital SystemHouston, TX
- Memorial Hermann Katy HospitalKaty, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Other facilities
- Memorial Hermann Rehabilitation Hospital KatyInpatient rehabilitation facility · Katy, TX
Industry payments (Open Payments)
- 2025$2,560 · 107 payments from 40 companies
- 2024$2,521 · 122 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $457.05 | 18 |
| Astrazeneca Pharmaceuticals LP | $194.51 | 8 |
| Merck Sharp & Dohme LLC | $184.37 | 7 |
| Sobi, Inc | $180.54 | 6 |
| E.R. Squibb & Sons, L.L.C. | $162.81 | 8 |
What the 2025 payments were for
- Food and Beverage$2,560 · 107 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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