Diana Mazzei Pifano, MD
NPI 1093370298ActiveIndividual· Internal Medicine· Cypress, TX
Internal Medicine (MD) with Tmh Physician Associates PLLC, practicing in Cypress, Texas. Their prescriptions cost Medicare Part D more than their services did: $386,446 for 2,536 claims, against $20,597 paid for services in 2024. Novo Nordisk Inc was the largest of 18 companies reporting payments in 2025, $772.58 in all, mostly food and beverage. Lists Houston Methodist Cypress Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1093370298 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 3, 2019 |
| Last updated in NPPES | Jan 28, 2025 |
| Certified by provider | Jan 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | T4796 | TX |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 328 across 21 procedure codes |
| Paid by Medicare | $20,597 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,536 · 6,746 30-day fills |
|---|---|
| Patients | 232 |
| Total drug cost | $386,446 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Tmh Physician Associates PLLCKaty, TX · 1,690 clinicians
Hospital affiliations
- Houston Methodist Cypress HospitalCypress, TX
- Houston Methodist HospitalHouston, TX
- Houston Methodist West HospitalHouston, TX
- Houston Methodist Willowbrook HospitalHouston, TX
Other facilities
- Phoenix Healthcare Services, IncHome health agency · Houston, TX
Industry payments (Open Payments)
- 2025$772.58 · 42 payments from 18 companies
- 2024$1,617 · 92 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $193.44 | 11 |
| Exact Sciences Corporation | $76.54 | 4 |
| Astrazeneca Pharmaceuticals LP | $74.02 | 4 |
| Glaxosmithkline, LLC. | $58.73 | 3 |
| Merck Sharp & Dohme LLC | $46.74 | 2 |
What the 2025 payments were for
- Food and Beverage$772.58 · 42 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Cypress · All internal medicine physicians in Texas