William Slavin, LLP LMSW
NPI 1154409373 · Psychologist · Traverse City, MI
William Slavin, LLP LMSW is a Psychologist provider in Traverse City, MI (NPI 1154409373).
Provider details
- NPI number
- 1154409373
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- LLP LMSW
- Sex
- Male
- Sole proprietor
- No
- License
- 6301003757 (MI)
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
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
- 2006-11-02
- Last updated
- 2025-09-11
Frequently asked questions
- What is William Slavin's NPI number?
- William Slavin's National Provider Identifier (NPI) is 1154409373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Slavin's specialty?
- William Slavin is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Slavin located?
- William Slavin's practice location on file with NPPES is 105 Hall St, Traverse City, MI 49684-2288.
- What is William Slavin's phone number?
- The practice phone number listed in the NPPES registry for William Slavin is (231) 922-4850.
- Is William Slavin's NPI active?
- Yes — William Slavin's NPI (1154409373) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.