Mark A. Underwood, MA, CCC-SLP
NPI 1639512247ActiveIndividual· Speech-Language Pathologist· Richland, WA
Speech-Language Pathologist (MA, CCC-SLP) in Richland, Washington, licensed in WA, with an NPI issued in April 2013.
Overview
| NPI | 1639512247 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MA, CCC-SLP |
| Sole proprietor | Yes |
| NPI issued | Apr 12, 2013 |
| Last updated in NPPES | Apr 12, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Speech-Language Pathologist Primary | 235Z00000X | LL60314859 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
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