Stephen Chandler, MD
NPI 1043437098ActiveIndividual· Internal Medicine, Medical Oncology· Vancouver, WA
Internal Medicine, Medical Oncology (MD) in Vancouver, Washington, licensed in WA and OR, with an NPI issued in April 2007. Their prescriptions cost Medicare Part D more than their services did: $121,064 for 198 claims, against $43,580 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 15 companies reporting payments in 2025, $466.01 in all, mostly food and beverage.
Overview
| NPI | 1043437098 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 19, 2007 |
| Last updated in NPPES | Jul 24, 2023 |
| Certified by provider | Jul 24, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | MD00029452 | WA |
| Internal Medicine | 207R00000X | MD07754 | OR |
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 - Hematology/Oncology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 43 |
|---|---|
| Services billed | 3,050 across 50 procedure codes |
| Paid by Medicare | $43,580 |
Part D prescriptions in 2024
| Prescriptions (claims) | 198 · 302 30-day fills |
|---|---|
| Patients | 71 |
| Total drug cost | $121,064 |
| Generic share | 94% of claims |
Industry payments (Open Payments)
- 2025$466.01 · 20 payments from 15 companies
- 2024$355.56 · 13 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $73.48 | 3 |
| Exelixis Inc. | $56.71 | 2 |
| Tersera Therapeutics LLC | $47.82 | 2 |
| Merck Sharp & Dohme LLC | $41.19 | 2 |
| Tempus Ai, Inc | $28.62 | 1 |
What the 2025 payments were for
- Food and Beverage$466.01 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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