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

Dr. Gregory N Hagan, MD

Individual provider Pediatrics Physician · NPI 1245203306

Dr. Gregory N Hagan, MD is a Pediatrics Physician in Cambridge, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

119 Windsor St Windsor Street Health Ctr
Cambridge, MA 02139-3647
Phone: (617) 665-3600
Fax: (617) 665-3603
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 70814 (MA)

Record details

NPI number1245203306
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 9, 2006
Last updated in NPPESNovember 21, 2011

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