Justin William, LCSW
NPI 1366816324 · Clinical Social Worker · Philadelphia, PA
Justin William, LCSW is a Clinical Social Worker provider in Philadelphia, PA (NPI 1366816324).
Provider details
- NPI number
- 1366816324
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- CW019144 (PA)
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
10 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
- 2015-11-13
- Last updated
- 2018-04-11
Frequently asked questions
- What is Justin William's NPI number?
- Justin William's National Provider Identifier (NPI) is 1366816324, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin William's specialty?
- Justin William is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Justin William located?
- Justin William's practice location on file with NPPES is 3535 Market St Fl 3, Philadelphia, PA 19104-3317.
- What is Justin William's phone number?
- The practice phone number listed in the NPPES registry for Justin William is (215) 746-6700.
- Is Justin William's NPI active?
- Yes — Justin William's NPI (1366816324) is active in the NPPES registry as of the last update on 2018-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.