William Slosson, ATC
NPI 1477673978 · Athletic Trainer · Lacey, WA
William Slosson, ATC is a Athletic Trainer provider in Lacey, WA (NPI 1477673978).
Provider details
- NPI number
- 1477673978
- Entity type
- Individual
- Primary specialty
- Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- ATC
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative 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
83% 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
- 2007-03-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Slosson's NPI number?
- William Slosson's National Provider Identifier (NPI) is 1477673978, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Slosson's specialty?
- William Slosson is listed in the NPPES registry with a primary specialty of Athletic Trainer (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is William Slosson located?
- William Slosson's practice location on file with NPPES is 350 River Ridge Dr Se, Lacey, WA 98513-6830.
- What is William Slosson's phone number?
- The practice phone number listed in the NPPES registry for William Slosson is (360) 412-4820.
- Is William Slosson's NPI active?
- Yes — William Slosson's NPI (1477673978) 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.