Colin T. Iosso, MD
NPI 1538137484ActiveIndividual· Psychiatry & Neurology, Neurology· Tacoma, WA
Psychiatry & Neurology, Neurology (MD) with Franciscan Medical Group and 1 other group, practicing in Tacoma, Washington. Their prescriptions cost Medicare Part D more than their services did: $207,738 for 1,097 claims, against $29,479 paid for services in 2024. Edwards Lifesciences Corporation was the largest of 3 companies reporting payments in 2025, $378.61 in all, mostly food and beverage. Lists Confluence Health Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538137484 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Feb 28, 2025 |
| Certified by provider | Feb 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | MD60201685 | WA |
| Psychiatry & Neurology, Neurology | 2084N0400X | M7291 | TX |
| Psychiatry & Neurology, Neurology | 2084N0400X | 39851 | TN |
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 - Neurology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 250 |
|---|---|
| Services billed | 335 across 18 procedure codes |
| Paid by Medicare | $29,479 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,097 · 2,146 30-day fills |
|---|---|
| Patients | 240 |
| Total drug cost | $207,738 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Neurology |
Medical groups
- Franciscan Medical GroupTacoma, WA · 1,421 clinicians
- Public Hospital Dist No 1 SkagitMount Vernon, WA · 323 clinicians
Hospital affiliations
- Confluence Health HospitalWenatchee, WA
- Skagit Valley HospitalMount Vernon, WA
- St Anthony HospitalGig Harbor, WA
- St Clare HospitalLakewood, WA
- St Joseph Medical CenterTacoma, WA
Industry payments (Open Payments)
- 2025$378.61 · 3 payments from 3 companies
- 2024$133.96 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $134.81 | 1 |
| Eisai Inc. | $125.00 | 1 |
| Alexion Pharmaceuticals, Inc. | $118.80 | 1 |
What the 2025 payments were for
- Food and Beverage$378.61 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 46 neurologists in Tacoma · All neurologists in Washington