Arthur Kevin Calderon Amador, DO
NPI 1851850978ActiveIndividual· Internal Medicine· Riverside, CA
Internal Medicine (DO) with Southern California Permanente Medical Group, practicing in Riverside, California. Their prescriptions cost Medicare Part D more than their services did: $34,898 for 483 claims, against $3,832 paid for services in 2024. Lists Kaiser Foundation Hospital, Riverside and 1 other hospital as hospital affiliations.
Overview
| NPI | 1851850978 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 18, 2019 |
| Last updated in NPPES | Jul 6, 2022 |
| Certified by provider | Jul 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A19752 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 | 18 |
|---|---|
| Services billed | 43 across 3 procedure codes |
| Paid by Medicare | $3,832 |
Part D prescriptions in 2024
| Prescriptions (claims) | 483 · 965 30-day fills |
|---|---|
| Patients | 190 |
| Total drug cost | $34,898 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliations
- Kaiser Foundation Hospital, RiversideRiverside, CA
- Kaiser Foundation Hospital-Moreno ValleyMoreno Valley, CA
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 246 internal medicine physicians in Riverside · All internal medicine physicians in California