Tam N. Nguyen, MD
NPI 1558520775ActiveIndividual· Otolaryngology· Owings Mills, MD
Otolaryngology (MD) in Owings Mills, Maryland, trained at University of Virginia School of Medicine (class of 2008). 1,499 Medicare patients in 2024, $335,132 paid; nearly all of their 1,042 Part D prescriptions were generic (97%). Genzyme Corporation was the largest of 7 companies reporting payments in 2025, $296.18 in all, mostly food and beverage.
Overview
| NPI | 1558520775 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 3, 2008 |
| Last updated in NPPES | Aug 3, 2026 |
| Certified by provider | Aug 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology Primary | 207Y00000X | D0076311 | MD |
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 - Otolaryngology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,499 |
|---|---|
| Services billed | 5,040 across 65 procedure codes |
| Paid by Medicare | $335,132 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,042 · 1,386 30-day fills |
|---|---|
| Patients | 362 |
| Total drug cost | $64,803 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Virginia School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Otolaryngology |
Medical groups
- Greater Baltimore Medical CenterTowson, MD · 354 clinicians
- Annapolis ENT Surgical Center LLCPrince Frederick, MD · 41 clinicians
Hospital affiliation
- Greater Baltimore Medical CenterBaltimore, MD
Industry payments (Open Payments)
- 2025$296.18 · 13 payments from 7 companies
- 2024$1,284 · 22 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $73.84 | 3 |
| Glaxosmithkline, LLC. | $68.62 | 3 |
| Regeneron Healthcare Solutions, Inc. | $63.88 | 3 |
| Resmed Corp | $29.79 | 1 |
| Astrazeneca Pharmaceuticals LP | $22.80 | 1 |
What the 2025 payments were for
- Food and Beverage$296.18 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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