AMY J BREGAR MD
NPI 1851687446
Obstetrics & Gynecology - Gynecologic Oncology in Boston, MA
About Amy J Bregar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AMY J BREGAR MD (NPI 1851687446) is an individual gynecologic oncology provider in Boston, Massachusetts, licensed in Massachusetts (261993) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, is affiliated with York Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Amy J Bregar 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
3Medicare enrollment records show Amy Bregar reassigns Medicare billing to 3 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
Dover, NH 03820
- Reassigned Medicare billing, New Hampshire enrollment
- 559 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 6
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
York Hospital
Acute Care Hospitals · York, MEMassachusetts General Hospital
Acute Care Hospitals · Boston, MAWentworth-Douglass Hospital
Acute Care Hospitals · Dover, NHExeter Hospital Inc
Acute Care Hospitals · Exeter, NHPhysician 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.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Amy Bregar's NPI number?
The NPI number for Amy Bregar is 1851687446. It was assigned to this individual provider in the NPPES registry on June 22, 2011.
Where is Amy Bregar located?
Amy Bregar practices at Massachusetts General Hospital 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 724-4800.
What is Amy Bregar's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.
Is Amy Bregar enrolled in Medicare?
Yes. Amy Bregar 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 Amy Bregar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amy Bregar reassigns Medicare benefits to 3 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and Wentworth Douglass Physician Corporation (Dover, NH). 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 Amy Bregar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Amy Bregar accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list Amy Bregar 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 Amy Bregar affiliated with any hospitals?
According to CMS data, Amy Bregar is affiliated with York Hospital, Massachusetts General Hospital, Wentworth-Douglass Hospital and Exeter Hospital Inc.
When was this NPI record last updated?
The NPPES record for Amy Bregar was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days 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.
# Amy J Bregar, MD · NPI 1851687446
Gynecologic Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 22, 2011.
## Identity
- **NPI:** 1851687446 (Entity type: Individual)
- **Enumerated:** June 22, 2011
- **Primary specialty:** Obstetrics & Gynecology - Gynecologic Oncology · taxonomy 207VX0201X
- **State license:** 261993 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST, Boston, MA 02114
- **Phone:** (617) 724-4800
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); Wentworth Douglass Physician Corporation (NPI 1336751825, Dover, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** September 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1851687446) · Data from the CMS NPPES public registry.