Quick answers
- Does Dennis M. Marceron accept Medicare assignment?
- Medicare's clinician data says Dennis M. Marceron may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Dennis M. Marceron's NPI number?
- 1558423749. 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 Dennis M. Marceron is enrolled with Medicare (CMS data updated October 2, 2026).
- 6041 California Ave SW Apt, Suite 302Seattle, WA 98136
- 6400 Southcenter BlvdTukwila, WA 98188
Specialties
- Mental Health Counselorprimary
Find other clinicians: Mental Health Counselor, Washington →
Other mental health counselors in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Graduation year | 2001 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1558423749 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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