Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Duncan Maru, MD, PHD

Individual provider Pediatrics Physician · NPI 1588892731

Duncan Maru, MD, PHD is an Internal Medicine in Boston, Massachusetts. Graduated from Yale University School of Medicine in 2009, 17 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 324-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
17
Trained at
Yale University School of Medicine
Licensed in
MA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

42 Union Ave
Boston, MA 02130-2616
Phone: (203) 687-8615
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 254630 (MA)

Record details

NPI number1588892731
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 26, 2009
Last updated in NPPESOctober 15, 2014
Mailing address42 Union Ave, Boston, MA 02130-2616

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 324 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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