William Liu, M.D.
NPI 1013022722ActiveIndividual· Internal Medicine, Rheumatology· Redondo Beach, CA
Internal Medicine, Rheumatology (M.D.) in Redondo Beach, California, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $706,108 for 3,251 claims, against $114,492 paid for services in 2024. Janssen Biotech, Inc. was the largest of 4 companies reporting payments in 2025, $515.55 in all, mostly food and beverage.
Overview
| NPI | 1013022722 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 20, 2006 |
| Last updated in NPPES | Apr 16, 2021 |
| Certified by provider | Apr 16, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | G51849 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 272 |
|---|---|
| Services billed | 2,496 across 18 procedure codes |
| Paid by Medicare | $114,492 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,251 · 5,799 30-day fills |
|---|---|
| Patients | 521 |
| Total drug cost | $706,108 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Rheumatology |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical InstitutePark Ridge, IL · 288 clinicians
Hospital affiliations
- Providence Little Co of Mary Med Ctr San PedroSan Pedro, CA
- Providence Little Company of Mary Med Ctr TorranceTorrance, CA
- Torrance Memorial Medical CenterTorrance, CA
Industry payments (Open Payments)
- 2025$515.55 · 5 payments from 4 companies
- 2024$593.70 · 9 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $232.56 | 2 |
| Argenx US, Inc. | $137.26 | 1 |
| Abbvie Inc. | $73.07 | 1 |
| Novartis Pharmaceuticals Corporation | $72.66 | 1 |
What the 2025 payments were for
- Food and Beverage$415.56 · 4 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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