Duncan Maru, MD,PHD
Pediatrics Physician · Boston, MA
Duncan Maru, MD,PHD is a pediatrics physician with a practice address in Boston, Massachusetts, and NPI 1588892731, issued on Jun 26, 2009. Check the license (Massachusetts 254630, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Duncan Maru
- Credential
- MD,PHD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 254630 MA
Self-reported in NPPES; status is on the state search - Practice location
- 42 Union Ave, Boston, MA 02130
- Phone
- (203) 687-8615
- Enumerated
- Jun 26, 2009
- Record last updated
- Oct 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201026000839); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Verify Duncan Maru in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 254630Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Icahn School OF Medicine AT Mount SinaiElmhurst, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Duncan Maru among 2,628 pediatrics physician records in Massachusetts
Duncan Maru, MD,PHD is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated2009 · median 2010 among the 319 with a school on file
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
822 pediatrics physician records list a practice address in Boston
They are 822 of the 41,865 NPPES records with a practice address in Boston, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Boston → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- James Bastian, MDJamaica Plain, MA 021301851321350
- Kelly Chiu, MDJamaica Plain, MA 021301821068370
- Sonia Diaz, MDJamaica Plain, MA 021301396720264
- Alexandra Epee-Bounya, M.D.Jamaica Plain, MA 021301386676815
- Nuria Gine-Nokes, MDJamaica Plain, MA 021301275582611
- Nancy Kahn, MDJamaica Plain, MA 021301871559195
- Elisabeth Keller, M.D.Boston, MA 021301952375081
- Carol Langford, MDJamaica Plain, MA 021301669423612
Common questions
What is Duncan Maru, MD,PHD's NPI number?
Duncan Maru, MD,PHD's National Provider Identifier (NPI) is 1588892731, issued on Jun 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Duncan Maru, MD,PHD located?
The NPPES record lists a practice address at 42 Union Ave, Boston, MA, 02130. Phone: (203) 687-8615. Providers update this record themselves, so call before visiting.
How can I verify Duncan Maru, MD,PHD's license?
NPPES lists Massachusetts license number 254630, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.