Vivian Nguyen, MD
NPI 1689869570ActiveIndividual· Internal Medicine· Westminster, CA
Internal Medicine (MD) with Desert Valley Medical Group Inc, practicing in Westminster, California. In 2024 Medicare paid $134,459 for 349 patients, and Part D covered 1,444 of their prescriptions, 88% of them generic. Kerecis Limited was the largest of 3 companies reporting payments in 2025, $82.70 in all, mostly food and beverage. Lists Desert Valley Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1689869570 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 13, 2007 |
| Last updated in NPPES | May 18, 2023 |
| Certified by provider | May 18, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A102097 | CA |
| Internal Medicine | 207R00000X | 249741 | NY |
| Internal Medicine | 207R00000X | TL001670 | GA |
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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 349 |
|---|---|
| Services billed | 1,395 across 20 procedure codes |
| Paid by Medicare | $134,459 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,444 · 2,113 30-day fills |
|---|---|
| Patients | 192 |
| Total drug cost | $109,635 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Desert Valley Medical Group IncVictorville, CA · 77 clinicians
Hospital affiliations
- Desert Valley HospitalVictorville, CA
- Providence St. Jude Medical CenterFullerton, CA
- Victor Valley Global Medical CenterVictorville, CA
Other facilities
- Kindred Hospital Brea D/P SnfNursing home · Brea, CA
Industry payments (Open Payments)
- 2025$82.70 · 3 payments from 3 companies
- 2024$22.01 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Kerecis Limited | $34.17 | 1 |
| Novo Nordisk Inc | $24.57 | 1 |
| Dynavax Technologies Corporation | $23.96 | 1 |
What the 2025 payments were for
- Food and Beverage$82.70 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 internal medicine physicians in Westminster · All internal medicine physicians in California