Roger Day, MD
NPI 1255918207 · Student in an Organized Health Care Education/Training Program · Boston, MA
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roger Day, MD is a Student in an Organized Health Care Education/Training Program provider in Boston, MA (NPI 1255918207).
Provider details
- NPI number
- 1255918207
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- 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
5 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 300 Longwood AveBoston, MA 02115-5724Phone: (617) 355-6000
Registry dates
- Enumerated
- 2021-03-25
- Last updated
- 2021-03-26
- Certified
- 2021-03-26
Frequently asked questions
- What is Roger Day's NPI number?
- Roger Day's National Provider Identifier (NPI) is 1255918207, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Day's specialty?
- Roger Day 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 Roger Day located?
- Roger Day's practice location on file with NPPES is One Boston Medical Center Pl, Boston, MA 02118-2999.
- What is Roger Day's phone number?
- The practice phone number listed in the NPPES registry for Roger Day is (617) 638-8000.
- Does Roger Day accept Medicare?
- Roger Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roger Day's NPI active?
- Yes — Roger Day's NPI (1255918207) is active in the NPPES registry as of the last update on 2021-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.