Pamela Dewar De Silva, MD
NPI 1568414548ActiveIndividual· Internal Medicine· Palmdale, CA
Internal Medicine (MD) with Desilva Medical Inc, practicing in Palmdale, California. Their prescriptions cost Medicare Part D more than their services did: $840,796 for 4,668 claims, against $447,649 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 3 companies reporting payments in 2025, $272.12 in all, mostly food and beverage. Lists Antelope Valley Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1568414548 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Apr 14, 2022 |
| Certified by provider | Apr 14, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A48894 | 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 | 478 |
|---|---|
| Services billed | 5,100 across 86 procedure codes |
| Paid by Medicare | $447,649 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,668 · 11,149 30-day fills |
|---|---|
| Patients | 393 |
| Total drug cost | $840,796 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Desilva Medical IncPalmdale, CA · 2 clinicians
Hospital affiliations
- Antelope Valley HospitalLancaster, CA
- Palmdale Regional Medical CenterPalmdale, CA
- Ridgecrest Regional HospitalRidgecrest, CA
Other facilities
- Blue Sky Home Health Care, IncHome health agency · Van Nuys, CA
- Guiding Hope Home HealthHome health agency · Santa Clarita, CA
Industry payments (Open Payments)
- 2025$272.12 · 6 payments from 3 companies
- 2024$99.92 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $225.18 | 4 |
| Dexcom, Inc. | $29.73 | 1 |
| Ascensia Diabetes Care US Inc. | $17.21 | 1 |
What the 2025 payments were for
- Food and Beverage$272.12 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Palmdale · All internal medicine physicians in California