Justin Gillis
NPI 1679060123 · Clinical Social Worker · Belmont, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Gillis is a Clinical Social Worker provider in Belmont, MA (NPI 1679060123).
Provider details
- NPI number
- 1679060123
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 120799 (MA)
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
8 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
- 2018-04-20
- Last updated
- 2018-04-20
Frequently asked questions
- What is Justin Gillis's NPI number?
- Justin Gillis's National Provider Identifier (NPI) is 1679060123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Gillis's specialty?
- Justin Gillis is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Justin Gillis located?
- Justin Gillis's practice location on file with NPPES is 115 Mill St, Belmont, MA 02478-1048.
- What is Justin Gillis's phone number?
- The practice phone number listed in the NPPES registry for Justin Gillis is (617) 855-2459.
- Does Justin Gillis accept Medicare?
- Justin Gillis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Gillis's NPI active?
- Yes — Justin Gillis's NPI (1679060123) is active in the NPPES registry as of the last update on 2018-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.