Mark Masterson, MSW
NPI 1841203395 · Mental Health Counselor · Vancouver, WA
Mark Masterson, MSW is a Mental Health Counselor provider in Vancouver, WA (NPI 1841203395).
Provider details
- NPI number
- 1841203395
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- LW00004819 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Masterson's NPI number?
- Mark Masterson's National Provider Identifier (NPI) is 1841203395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Masterson's specialty?
- Mark Masterson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Masterson located?
- Mark Masterson's practice location on file with NPPES is 12607 Se Mill Plain Blvd, Vancouver, WA 98684-6055.
- What is Mark Masterson's phone number?
- The practice phone number listed in the NPPES registry for Mark Masterson is (360) 896-4460.
- Is Mark Masterson's NPI active?
- Yes — Mark Masterson's NPI (1841203395) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.