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DR. GREGORY N HAGAN MD
NPI 1245203306
Pediatrics in Cambridge, MA

Active since February 09, 2006PECOS Enrolled
119 WINDSOR ST, WINDSOR STREET HEALTH CENTER, CAMBRIDGE, MA 02139(617) 665-3600(617) 665-3603 Get Directions Write a Review

NPPES record last updated: November 21, 2011. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Dr. Gregory N Hagan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY N HAGAN MD (NPI 1245203306) is an individual pediatrics provider in Cambridge, Massachusetts, licensed in Massachusetts (70814) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245203306
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. GREGORY N HAGANCredential: MD
Location Address119 WINDSOR ST, WINDSOR STREET HEALTH CENTERCambridge, MA 02139-3647
Mailing Address1493 Cambridge StCambridge, MA 02139-1047 · (617) 665-1616 · Fax (617) 665-1976
Phone(617) 665-3600
Fax(617) 665-3603
Sole ProprietorNo
Enumeration DateFebruary 9, 2006
Last NPPES UpdateNovember 21, 2011
✔ NPI 1245203306 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · 70814
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
119 WINDSOR ST, Cambridge, MA 02139
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Other Identifiers 5

Medicaid3091562MA
Other714861Tufts
OtherJ09328Bcbs
Medicare UPINE35264
Medicare ID-Type UnspecifiedJ09328MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory N Hagan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02139 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JESSICA SENEE
Licensed Practical Nurse
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (978) 660-4427
KATHERINE E MILLER M.D.
Family Medicine
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3370
ANGELA E RADAN PHD
Psychologist (Clinical)
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3925
DR. ASTRID DESROSIERS MD MPH
Psychiatry & Neurology (Psychiatry)
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3900
ROBERT M MEYER M.D.
Pediatrics
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3646
MARIE O. GIRAULT NP
Nurse Practitioner
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3600
FANAH HAGOS
Registered Nurse
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3600
CARLA GONSALVES RN
Registered Nurse
119 WINDSOR ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-3600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Hagan's NPI number?

The NPI number for Gregory Hagan is 1245203306. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Where is Gregory Hagan located?

Gregory Hagan practices at 119 Windsor St Windsor Street Health Center, Cambridge, MA 02139. The listed phone number is (617) 665-3600.

What is Gregory Hagan's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Gregory Hagan enrolled in Medicare?

Yes. Gregory Hagan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Hagan was last updated on November 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.