Marisa Brett-Fleegler, MD
NPI 1588629299 · Pediatric Emergency Medicine (Pediatrics) Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marisa Brett-Fleegler, MD is a Pediatric Emergency Medicine (Pediatrics) Physician provider in Boston, MA (NPI 1588629299).
Provider details
- NPI number
- 1588629299
- Entity type
- Individual
- Primary specialty
- Pediatric Emergency Medicine (Pediatrics) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 210018 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-04-18
- Last updated
- 2007-08-16
Frequently asked questions
- What is Marisa Brett-Fleegler's NPI number?
- Marisa Brett-Fleegler's National Provider Identifier (NPI) is 1588629299, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marisa Brett-Fleegler's specialty?
- Marisa Brett-Fleegler is listed in the NPPES registry with a primary specialty of Pediatric Emergency Medicine (Pediatrics) Physician (Allopathic & Osteopathic Physicians).
- Where is Marisa Brett-Fleegler located?
- Marisa Brett-Fleegler's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Marisa Brett-Fleegler's phone number?
- The practice phone number listed in the NPPES registry for Marisa Brett-Fleegler is (617) 355-6624.
- Does Marisa Brett-Fleegler accept Medicare?
- Marisa Brett-Fleegler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marisa Brett-Fleegler's NPI active?
- Yes — Marisa Brett-Fleegler's NPI (1588629299) is active in the NPPES registry as of the last update on 2007-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.