William Casas
NPI 1477998615ActiveIndividual· Family Medicine· La Verne, CA
Family Medicine with Premier Family Medicine Associates, Inc, practicing in La Verne, California. Their prescriptions cost Medicare Part D more than their services did: $481,828 for 4,378 claims, against $37,061 paid for services in 2024. Glaxosmithkline, LLC. reported $14.73 in payments in 2024, mostly food and beverage. Lists Pomona Valley Hospital Medical Center as a hospital affiliation.
Overview
| NPI | 1477998615 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | May 1, 2013 |
| Last updated in NPPES | Feb 25, 2026 |
| Certified by provider | Feb 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A139442 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 197 |
|---|---|
| Services billed | 636 across 35 procedure codes |
| Paid by Medicare | $37,061 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,378 · 10,558 30-day fills |
|---|---|
| Patients | 483 |
| Total drug cost | $481,828 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Premier Family Medicine Associates, IncPomona, CA · 65 clinicians
Hospital affiliation
- Pomona Valley Hospital Medical CenterPomona, CA
Industry payments (Open Payments)
- 2024$14.73 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $14.73 | 1 |
What the 2024 payments were for
- Food and Beverage$14.73 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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