Mark S. Samson I, MD
NPI 1477569705ActiveIndividual· Psychiatry & Neurology, Psychiatry· Olympia, WA
Psychiatry & Neurology, Psychiatry (MD) in Olympia, Washington, trained at University of Washington School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $92,424 for 2,160 claims, against $1,996 paid for services in 2024.
Overview
| NPI | 1477569705 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | May 3, 2021 |
| Certified by provider | May 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | MD37632 | 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 - Psychiatry (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 31 across 5 procedure codes |
| Paid by Medicare | $1,996 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,160 · 4,548 30-day fills |
|---|---|
| Patients | 229 |
| Total drug cost | $92,424 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Kaiser Foundation Health Plan of WashingtonBellevue, WA · 1,526 clinicians
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 33 psychiatrists in Olympia · All psychiatrists in Washington