Linda T. Nguyen, M.D.
NPI 1407104813ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Rockville, MD
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Mary Washington Healthcare Physicians, practicing in Rockville, Maryland. Their prescriptions cost Medicare Part D more than their services did: $1,609,609 for 3,147 claims, against $67,093 paid for services in 2024. Janssen Biotech, Inc. was the largest of 12 companies reporting payments in 2025, $558.88 in all, mostly food and beverage. Lists Mary Washington Hospital as a hospital affiliation.
Overview
| NPI | 1407104813 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 16, 2012 |
| Last updated in NPPES | Jan 26, 2021 |
| Certified by provider | Jan 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 19060-875 | WI |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | D87073 | 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 - Internal Medicine (DC); Practitioner - Endocrinology (VA); Practitioner - Endocrinology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 321 |
|---|---|
| Services billed | 1,695 across 16 procedure codes |
| Paid by Medicare | $67,093 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,147 · 7,708 30-day fills |
|---|---|
| Patients | 383 |
| Total drug cost | $1,609,609 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mary Washington Healthcare PhysiciansStafford, VA · 282 clinicians
Hospital affiliation
- Mary Washington HospitalFredericksburg, VA
Industry payments (Open Payments)
- 2025$558.88 · 19 payments from 12 companies
- 2024$613.62 · 26 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $131.63 | 1 |
| Abbott Laboratories | $71.65 | 3 |
| Amgen Inc. | $61.97 | 3 |
| Ascendis Pharma Endocrinology Inc | $53.25 | 2 |
| Dexcom, Inc. | $43.25 | 2 |
What the 2025 payments were for
- Food and Beverage$558.88 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 endocrinologists in Rockville · All endocrinologists in Maryland