DR. GREGORY EDWARD GINSBURG MD
NPI 1407847924
Anesthesiology in Boston, MA
About Dr. Gregory Edward Ginsburg Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGORY EDWARD GINSBURG MD (NPI 1407847924) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (224152) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of University Of Massachusetts Medical School (2002).
NPPES Registry Identity
Specialties & Licenses
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. Gregory Edward Ginsburg 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 Gregory Ginsburg 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 3
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, MAOther 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 Gregory Ginsburg's NPI number?
The NPI number for Gregory Ginsburg is 1407847924. It was assigned to this individual provider in the NPPES registry on November 3, 2005.
Where is Gregory Ginsburg located?
Gregory Ginsburg practices at 55 Fruit St Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 726-3030.
What is Gregory Ginsburg's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gregory Ginsburg enrolled in Medicare?
Yes. Gregory Ginsburg 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 Gregory Ginsburg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Ginsburg 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 Gregory Ginsburg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Ginsburg accept?
Health plans from Taro Health list Gregory Ginsburg 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 Gregory Ginsburg affiliated with any hospitals?
According to CMS data, Gregory Ginsburg is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Gregory Ginsburg was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Gregory Edward Ginsburg, MD · NPI 1407847924
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since November 3, 2005.
## Identity
- **NPI:** 1407847924 (Entity type: Individual)
- **Enumerated:** November 3, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 224152 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, MASSACHUSETTS GENERAL HOSPITAL, Boston, MA 02114-2621
- **Phone:** (617) 726-3030 · **Fax:** (617) 724-8500
## 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:** University Of Massachusetts Medical School, class of 2002
## Record status
- **NPPES last updated:** July 8, 2007
---
Source: [NPI Profile](https://npiprofile.com/npi/1407847924) · Data from the CMS NPPES public registry.