Dennis S. Liu, MD
NPI 1629164520ActiveIndividual· Internal Medicine· Arcadia, CA
Internal Medicine (MD) in Arcadia, California, trained at State University of New York Downstate Medical Center (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $976,102 for 10,154 claims, against $282,287 paid for services in 2024. Lilly USA, LLC was the largest of 2 companies reporting payments in 2025, $46.43 in all, mostly food and beverage.
Overview
| NPI | 1629164520 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 5, 2006 |
| Last updated in NPPES | Mar 1, 2020 |
| Certified by provider | Mar 1, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A72151 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 508 |
|---|---|
| Services billed | 4,399 across 36 procedure codes |
| Paid by Medicare | $282,287 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,154 · 23,064 30-day fills |
|---|---|
| Patients | 710 |
| Total drug cost | $976,102 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Casa Colina HospitalPomona, CA
- Usc Arcadia HospitalArcadia, CA
Other facilities
- Practicare Home Health AgencyHome health agency · Arcadia, CA
- Arcadia Care CenterNursing home · Arcadia, CA
Industry payments (Open Payments)
- 2025$46.43 · 2 payments from 2 companies
- 2024$197.87 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $26.75 | 1 |
| Exact Sciences Corporation | $19.68 | 1 |
What the 2025 payments were for
- Food and Beverage$46.43 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 internal medicine physicians in Arcadia · All internal medicine physicians in California