Tammy T. Nguyen, M.D.
NPI 1356736839ActiveIndividual· Surgery, Vascular Surgery· Worcester, MA
Surgery, Vascular Surgery (M.D.) in Worcester, Massachusetts, trained at University of Utah School of Medicine (class of 2015). In 2024 Medicare paid $63,986 for 205 patients, and Part D covered 67 of their prescriptions, 81% of them generic. Organogenesis Inc. was the largest of 2 companies reporting payments in 2025, $462.16 in all, mostly food and beverage.
Overview
| NPI | 1356736839 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 1, 2015 |
| Last updated in NPPES | Nov 5, 2020 |
| Certified by provider | Nov 5, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | 283226 | MA |
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 - Vascular Surgery (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 205 |
|---|---|
| Services billed | 479 across 76 procedure codes |
| Paid by Medicare | $63,986 |
Part D prescriptions in 2024
| Prescriptions (claims) | 67 · 88 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $9,502 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Utah School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Vascular Surgery |
Medical group
- Umass Memorial Medical Group IncWorcester, MA · 2,516 clinicians
Hospital affiliation
- Umass Memorial Medical Center/University CampusWorcester, MA
Industry payments (Open Payments)
- 2025$462.16 · 17 payments from 2 companies
- 2024$486.83 · 19 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $396.42 | 13 |
| Penumbra, Inc. | $65.74 | 4 |
What the 2025 payments were for
- Food and Beverage$462.16 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 vascular surgeons in Worcester · All vascular surgeons in Massachusetts