DR. BRENNA W CASEY MD
NPI 1730155698
Internal Medicine - Gastroenterology in Boston, MA
About Dr. Brenna W Casey Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRENNA W CASEY MD (NPI 1730155698) is an individual gastroenterology provider in Boston, Massachusetts, licensed in Massachusetts (161155) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 5
Accepted Insurance
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
Dr. Brenna W Casey 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 Brenna Casey 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
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 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 10
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General 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
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 Brenna Casey's NPI number?
The NPI number for Brenna Casey is 1730155698. It was assigned to this individual provider in the NPPES registry on February 28, 2006. The provider is also known as Dr. Brenna C Bounds M.D..
Where is Brenna Casey located?
Brenna Casey practices at 55 Fruit St Gastroenterology Associates, Boston, MA 02114. The listed phone number is (617) 724-1685.
What is Brenna Casey's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Brenna Casey enrolled in Medicare?
Yes. Brenna Casey 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 Brenna Casey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brenna Casey reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (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 Brenna Casey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brenna Casey accept?
Health plans from Taro Health list Brenna Casey as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Brenna Casey affiliated with any hospitals?
According to CMS data, Brenna Casey is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Brenna Casey was last updated on December 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Brenna W Casey, MD · NPI 1730155698
Gastroenterology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 28, 2006.
## Identity
- **NPI:** 1730155698 (Entity type: Individual)
- **Enumerated:** February 28, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 161155 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, GASTROENTEROLOGY ASSOCIATES, Boston, MA 02114-2696
- **Phone:** (617) 724-1685 · **Fax:** (617) 724-5997
## 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): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** December 12, 2012
- **Other identifiers:** Other J22586 (MA); Medicare UPIN G23320; Medicaid 0107280 (MA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1730155698) · Data from the CMS NPPES public registry.