John Sloss, MA, LMHC
NPI 1528494010 · Mental Health Counselor · Tukwila, WA
John Sloss, MA, LMHC is a Mental Health Counselor provider in Tukwila, WA (NPI 1528494010).
Provider details
- NPI number
- 1528494010
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MA, LMHC
- Sex
- Male
- Sole proprietor
- No
- License
- 60486816 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
12 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
- 2013-09-17
- Last updated
- 2016-03-21
Frequently asked questions
- What is John Sloss's NPI number?
- John Sloss's National Provider Identifier (NPI) is 1528494010, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sloss's specialty?
- John Sloss is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is John Sloss located?
- John Sloss's practice location on file with NPPES is 6100 Southcenter Blvd, Tukwila, WA 98188-2442.
- What is John Sloss's phone number?
- The practice phone number listed in the NPPES registry for John Sloss is (206) 444-7849.
- Is John Sloss's NPI active?
- Yes — John Sloss's NPI (1528494010) is active in the NPPES registry as of the last update on 2016-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.