Justin Sean Gillis
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2018
- Practice address
- 115 Mill Street, Belmont, MA 02478
- Practice phone
- Call (617) 855-3450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Justin Gillis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Justin Sean Gillis is a clinical social worker in Belmont, Massachusetts
Justin Gillis practices at McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham.
Justin Gillis' NPI, 1679060123, was assigned on April 20, 2018. Justin Gillis holds Massachusetts license 120799.
- NPI
- 1679060123NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163772591
- NPI enumeration date
- April 20, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 855-3450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Justin Sean Gillis practices at McLean Hospital in Belmont, Massachusetts
Justin Gillis' primary practice is McLean Hospital, at 115 Mill Street, Belmont, MA 02478 in Middlesex County. The practice phone is (617) 855-3450.
- McLean Hospital115 Mill Street, Belmont, MA 02478 · Middlesex CountyPhone(617) 855-3450
Source: Dmand AI Affiliation Data
Justin Sean Gillis is affiliated with 1 site of care and 1 medical group
Justin Gillis' primary practice is McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham. The medical group on file is McLean Hospital. Justin Gillis' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Justin Sean Gillis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Justin Gillis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLean Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Justin Sean Gillis is one of 4,501 clinical social workers in Massachusetts
Social worker is Justin Gillis' primary specialty in the NPI Registry, under taxonomy code 1041C0700X. The record also lists clinical. Justin Gillis is licensed in Massachusetts.
Specialties and state licenses
- Clinical social worker, MassachusettsPrimary
Clinical social workers near Justin Gillis
Counts of clinical social workers with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Justin Sean Gillis' patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Justin Gillis' median patient age at 45, with 43% women.
Justin Gillis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women43%
- Men43%
Source: Dmand AI Patient Panel Data
Justin Sean Gillis offers telehealth to Medicare patients
Justin Gillis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Justin Gillis as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Justin Sean Gillis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Justin Sean Gillis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Justin Sean Gillis' NPI number?
Justin Sean Gillis' NPI number is 1679060123. It was assigned on April 20, 2018, and it is active in the NPI Registry.
What does Justin Sean Gillis specialize in?
Justin Sean Gillis is a clinical social worker in Belmont, Massachusetts. The primary specialty in the NPI Registry is Clinical Social Worker (taxonomy code 1041C0700X).
Where does Justin Sean Gillis practice?
Justin Gillis practices at 115 Mill Street, Belmont, MA 02478. Justin Gillis' primary practice is McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham.
What is Justin Sean Gillis' office phone number?
The practice phone on file for Justin Gillis is (617) 855-3450.
What is Justin Sean Gillis' medical license number?
Justin Gillis holds Massachusetts license 120799.
Which hospitals is Justin Sean Gillis affiliated with?
Justin Gillis practices at McLean Hospital in Belmont, Massachusetts.
What medical group is Justin Sean Gillis part of?
Justin Gillis is linked to McLean Hospital.
Does Justin Sean Gillis accept Medicare?
Yes. CMS lists Justin Gillis as accepting Medicare assignment.
Does Justin Sean Gillis offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Justin Gillis as offering telehealth services.
How long has Justin Sean Gillis been practicing?
Justin Gillis graduated from medical school in 2015, 11 years ago.
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