Louis Adrian Vandermolen, M.D.
NPI 1568540193ActiveIndividual· Internal Medicine, Hematology & Oncology· Newport Beach, CA
Internal Medicine, Hematology & Oncology (M.D.) in Newport Beach, California, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $4,362,827 for 2,712 claims, against $446,238 paid for services in 2024. Tempus Ai, Inc reported $29.08 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1568540193 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Aug 14, 2021 |
| Certified by provider | Aug 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G51429 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,503 |
|---|---|
| Services billed | 7,640 across 15 procedure codes |
| Paid by Medicare | $446,238 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,712 · 5,086 30-day fills |
|---|---|
| Patients | 552 |
| Total drug cost | $4,362,827 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Usc Care Medical Group IncLos Angeles, CA · 1,380 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Keck Hospital of UscLos Angeles, CA
Other facilities
- Hoag Home HealthHome health agency · Newport Beach, CA
Industry payments (Open Payments)
- 2025$29.08 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tempus Ai, Inc | $29.08 | 1 |
What the 2025 payments were for
- Food and Beverage$29.08 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Newport Beach
- 1295875854
- 1316022924
- 1588053458
- 1639603236
- 1659303873
- 1669627238
- 1689838641
- 1710121165
- 1730139387
- 1730240219
- 1740316272
- 1770583197
All 25 hematologist-oncologists in Newport Beach · All hematologist-oncologists in California