Anthony Loc Nguyen, MD
Internal Medicine, Hematology & Oncology (MD) with Regents of the University of California and 1 other group, practicing in La Jolla, California. Their prescriptions cost Medicare Part D more than their services did: $898,698 for 238 claims, against $135,530 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 16 companies reporting payments in 2025, $8,891 in all, mostly consulting fees. Lists Aurora Medical Center Sheboygan County and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1295153575 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 2, 2014 |
| Last updated in NPPES | Nov 13, 2025 |
| Certified by provider | Nov 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A140417 | CA |
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 - Hematology/Oncology (CA); Practitioner - Internal Medicine (CA); Practitioner - Hematology/Oncology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 6,772 across 58 procedure codes |
| Paid by Medicare | $135,530 |
Part D prescriptions in 2024
| Prescriptions (claims) | 238 · 345 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $898,698 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
- Aurora Health Care Central, Inc.Sheboygan, WI · 10 clinicians
Hospital affiliations
- Aurora Medical Center Sheboygan CountySheboygan, WI
- El Centro Regional Medical CenterEl Centro, CA
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Industry payments (Open Payments)
- 2025$8,891 · 30 payments from 16 companies
- 2024$3,621 · 18 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $4,642 | 4 |
| Janssen Scientific Affairs, LLC | $3,414 | 3 |
| Pharmaessentia USA Corporation | $178.19 | 3 |
| Sanofi US Services Inc. | $117.83 | 1 |
| Genzyme Corporation | $101.46 | 3 |
What the 2025 payments were for
- Consulting Fee$7,730 · 2 payments
- Food and Beverage$1,161 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 47 hematologist-oncologists in La Jolla · All hematologist-oncologists in California