Gareth Marshall, MD
NPI 1487159851 · Pediatrics Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gareth Marshall, MD is a Pediatrics Physician provider in Boston, MA (NPI 1487159851).
Provider details
- NPI number
- 1487159851
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 287819 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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)
- Boston Children'S Hospital 300 Longwood AveBoston, MA 02115-5724Phone: (617) 355-8241
Registry dates
- Enumerated
- 2018-03-28
- Last updated
- 2021-07-15
- Certified
- 2021-07-15
Frequently asked questions
- What is Gareth Marshall's NPI number?
- Gareth Marshall's National Provider Identifier (NPI) is 1487159851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gareth Marshall's specialty?
- Gareth Marshall is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Gareth Marshall located?
- Gareth Marshall's practice location on file with NPPES is 165 Dartmouth St, Boston, MA 02116-5123.
- What is Gareth Marshall's phone number?
- The practice phone number listed in the NPPES registry for Gareth Marshall is (617) 859-5470.
- Does Gareth Marshall accept Medicare?
- Gareth Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gareth Marshall's NPI active?
- Yes — Gareth Marshall's NPI (1487159851) is active in the NPPES registry as of the last update on 2021-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.