Jonathan Marron, MD
NPI 1427216753 · Pediatric Hematology & Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Marron, MD is a Pediatric Hematology & Oncology Physician provider in Boston, MA (NPI 1427216753).
Provider details
- NPI number
- 1427216753
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 250300 (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
18 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
- 2008-05-22
- Last updated
- 2015-09-09
Frequently asked questions
- What is Jonathan Marron's NPI number?
- Jonathan Marron's National Provider Identifier (NPI) is 1427216753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Marron's specialty?
- Jonathan Marron is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Marron located?
- Jonathan Marron's practice location on file with NPPES is 450 Brookline Ave, Boston, MA 02215-5418.
- What is Jonathan Marron's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Marron is (617) 632-3453.
- Does Jonathan Marron accept Medicare?
- Jonathan Marron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Marron's NPI active?
- Yes — Jonathan Marron's NPI (1427216753) is active in the NPPES registry as of the last update on 2015-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.