Richard Derrick Knowles, MD
NPI 1225113236ActiveIndividual· Family Medicine· Vancouver, WA
Family Medicine (MD) with Sea Mar Community Health Centers, practicing in Vancouver, Washington. Their prescriptions cost Medicare Part D more than their services did: $276,083 for 2,310 claims, against $41,393 paid for services in 2024. Gilead Sciences, Inc. reported $17.25 in payments in 2025, mostly food and beverage. Lists Legacy Salmon Creek Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1225113236 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 26, 2006 |
| Last updated in NPPES | Aug 5, 2026 |
| Certified by provider | Aug 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | MD195896 | OR |
| Family Medicine | 207Q00000X | MD00042903 | WA |
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 - Family Practice (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 252 |
|---|---|
| Services billed | 1,945 across 43 procedure codes |
| Paid by Medicare | $41,393 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,310 · 4,404 30-day fills |
|---|---|
| Patients | 254 |
| Total drug cost | $276,083 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Sea Mar Community Health CentersPuyallup, WA · 230 clinicians
Hospital affiliations
- Legacy Salmon Creek Medical CenterVancouver, WA
- Peacehealth Southwest Medical CenteVancouver, WA
- Providence Portland Medical CenterPortland, OR
Industry payments (Open Payments)
- 2025$17.25 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $17.25 | 1 |
What the 2025 payments were for
- Food and Beverage$17.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 266 family medicine physicians in Vancouver · All family medicine physicians in Washington