Nasser T. Liasi, MD
NPI 1144466780ActiveIndividual· Internal Medicine· Fontana, CA
Internal Medicine (MD) with Clinic Services of California Medical Group Inc, practicing in Fontana, California. Their prescriptions cost Medicare Part D more than their services did: $406,422 for 2,611 claims, against $14,324 paid for services in 2024. Agios Pharmaceuticals, Inc. reported $33.06 in payments in 2024, mostly education. Lists Arrowhead Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1144466780 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 4, 2009 |
| Last updated in NPPES | Oct 4, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A115058 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 137 |
|---|---|
| Services billed | 214 across 7 procedure codes |
| Paid by Medicare | $14,324 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,611 · 5,384 30-day fills |
|---|---|
| Patients | 229 |
| Total drug cost | $406,422 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Clinic Services of California Medical Group IncColton, CA · 61 clinicians
Hospital affiliation
- Arrowhead Regional Medical CenterColton, CA
Other facilities
- Angelus Home HealthHome health agency · Ontario, CA
Industry payments (Open Payments)
- 2024$33.06 · 2 payments from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Agios Pharmaceuticals, Inc. | $33.06 | 2 |
What the 2024 payments were for
- Education$33.06 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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