Garland A. Castaneda, MD
NPI 1740676881ActiveIndividual· Internal Medicine· Alameda, CA
Internal Medicine (MD) in Alameda, California, trained at University of Colorado School of Medicine, Aurora (class of 2015). In 2024 Medicare paid $32,004 for 100 patients, and Part D covered 211 of their prescriptions, 85% of them generic.
Overview
| NPI | 1740676881 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 14, 2015 |
| Last updated in NPPES | Nov 24, 2021 |
| Certified by provider | Nov 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A147493 | 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 - Hospitalist (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 329 across 9 procedure codes |
| Paid by Medicare | $32,004 |
Part D prescriptions in 2024
| Prescriptions (claims) | 211 · 386 30-day fills |
|---|---|
| Patients | 83 |
| Total drug cost | $22,047 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Colorado School of Medicine, Aurora |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Hospitalist |
Medical group
- Valley Medical Group-RentonCovington, WA · 411 clinicians
Hospital affiliation
- Valley Medical CenterRenton, WA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 42 internal medicine physicians in Alameda · All internal medicine physicians in California