Loan L. Nguyen, MD
NPI 1043273139ActiveIndividual· Internal Medicine, Cardiovascular Disease· Mesa, AZ
Internal Medicine, Cardiovascular Disease (MD) in Mesa, Arizona, trained at Tulane University School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $947,093 for 5,356 claims, against $360,380 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. reported $17.41 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1043273139 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 10, 2006 |
| Last updated in NPPES | Mar 26, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 31515 | AZ |
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 - Cardiovascular Disease (Cardiology) (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 910 |
|---|---|
| Services billed | 3,614 across 48 procedure codes |
| Paid by Medicare | $360,380 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,356 · 13,172 30-day fills |
|---|---|
| Patients | 813 |
| Total drug cost | $947,093 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Tri-City Cardiology Consultants PCMesa, AZ · 40 clinicians
Hospital affiliations
- Banner Baywood Medical CenterMesa, AZ
- Banner Desert Medical CenterMesa, AZ
- Banner Gateway Medical CenterGilbert, AZ
- Banner Heart HospitalMesa, AZ
- Banner Ironwood Medical CenterQueen Creek, AZ
Industry payments (Open Payments)
- 2025$17.41 · 1 payment from 1 company
- 2024$111.87 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $17.41 | 1 |
What the 2025 payments were for
- Food and Beverage$17.41 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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