KATHLEEN ELIZABETH COREY MD
NPI 1326174038
Internal Medicine - Gastroenterology in Boston, MA
About Kathleen Elizabeth Corey Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHLEEN ELIZABETH COREY MD (NPI 1326174038) is an individual gastroenterology provider in Boston, Massachusetts, licensed in Massachusetts (P-226977) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Duke University School Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Kathleen Elizabeth Corey Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Kathleen Corey reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MASouthcoast Hospitals Group
Acute Care Hospitals · Fall River, MANewton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Kathleen Corey's NPI number?
The NPI number for Kathleen Corey is 1326174038. It was assigned to this individual provider in the NPPES registry on February 26, 2007.
Where is Kathleen Corey located?
Kathleen Corey practices at Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114. The listed phone number is (617) 724-6113.
What is Kathleen Corey's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Kathleen Corey enrolled in Medicare?
Yes. Kathleen Corey is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Kathleen Corey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Corey reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kathleen Corey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Kathleen Corey affiliated with any hospitals?
According to CMS data, Kathleen Corey is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Southcoast Hospitals Group, Newton-Wellesley Hospital and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Kathleen Corey was last updated on July 18, 2012. 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.
# Kathleen Elizabeth Corey, MD · NPI 1326174038
Gastroenterology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 26, 2007.
## Identity
- **NPI:** 1326174038 (Entity type: Individual)
- **Enumerated:** February 26, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** P-226977 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, Boston, MA 02114
- **Phone:** (617) 724-6113
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Duke University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** July 18, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1326174038) · Data from the CMS NPPES public registry.