Quick answers
- Where does Silas Gilliam see patients?
- Medicare's clinician data lists 2 practice locations, including Seattle, WA and Los Angeles, CA. Call before your visit to confirm the address.
- What is Silas Gilliam's specialty?
- Medicare lists Occupational Therapist in Private Practice as the primary specialty.
- Does Silas Gilliam accept Medicare assignment?
- Medicare's clinician data says Silas Gilliam may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Silas Gilliam's NPI number?
- 1326806456. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Silas Gilliam is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 9th AveSeattle, WA 98101
- PO BoxLos Angeles, CA 90074
Specialties
Find other clinicians: Occupational Therapist in Private Practice, Washington →
Other occupational therapists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1326806456 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians