Justin Halloran, MD
NPI 1386384535 · Student in an Organized Health Care Education/Training Program · Cambridge, MA
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Halloran, MD is a Student in an Organized Health Care Education/Training Program provider in Cambridge, MA (NPI 1386384535).
Provider details
- NPI number
- 1386384535
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 294027 (MA)
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- 2022-03-29
- Last updated
- 2023-12-27
- Certified
- 2023-12-27
Frequently asked questions
- What is Justin Halloran's NPI number?
- Justin Halloran's National Provider Identifier (NPI) is 1386384535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Halloran's specialty?
- Justin Halloran is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Justin Halloran located?
- Justin Halloran's practice location on file with NPPES is 1493 Cambridge St, Cambridge, MA 02139-1047.
- What is Justin Halloran's phone number?
- The practice phone number listed in the NPPES registry for Justin Halloran is (617) 665-1000.
- Does Justin Halloran accept Medicare?
- Justin Halloran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Halloran's NPI active?
- Yes — Justin Halloran's NPI (1386384535) is active in the NPPES registry as of the last update on 2023-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.