Jason Gilleylen, M.D.
NPI 1538435227 · Student in an Organized Health Care Education/Training Program · Boston, MA
Jason Gilleylen, M.D. is a Student in an Organized Health Care Education/Training Program provider in Boston, MA (NPI 1538435227).
Provider details
- NPI number
- 1538435227
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
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
14 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2012-03-27
- Last updated
- 2012-03-27
Frequently asked questions
- What is Jason Gilleylen's NPI number?
- Jason Gilleylen's National Provider Identifier (NPI) is 1538435227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Gilleylen's specialty?
- Jason Gilleylen 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 Jason Gilleylen located?
- Jason Gilleylen's practice location on file with NPPES is 110 Francis St, Boston, MA 02215-5501.
- What is Jason Gilleylen's phone number?
- The practice phone number listed in the NPPES registry for Jason Gilleylen is (617) 637-9236.
- Is Jason Gilleylen's NPI active?
- Yes — Jason Gilleylen's NPI (1538435227) is active in the NPPES registry as of the last update on 2012-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.