DR. AMELIA HAJ MD, PHD
NPI 1023695962
Pathology - Anatomic Pathology & Clinical Pathology in Boston, MA
About Dr. Amelia Haj Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AMELIA HAJ MD, PHD (NPI 1023695962) is an individual anatomic pathology & clinical pathology provider in Boston, Massachusetts, licensed in Massachusetts (1018203) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of University Of Wisconsin School Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses 2
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. Amelia Haj Md, Phd 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
4Medicare enrollment records show Amelia Haj reassigns Medicare billing to 4 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
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Medford, MA 02155
- Reassigned Medicare billing, Massachusetts enrollment
- 258 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.
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 Amelia Haj's NPI number?
The NPI number for Amelia Haj is 1023695962. It was assigned to this individual provider in the NPPES registry on March 26, 2021.
Where is Amelia Haj located?
Amelia Haj practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 643-0800.
What is Amelia Haj's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Amelia Haj enrolled in Medicare?
Yes. Amelia Haj 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 Amelia Haj's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amelia Haj reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Brigham & Womens Physicians Organization Inc (Boston, MA) and Mass General Brigham Community Physicians Inc (Medford, 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 Amelia Haj's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Amelia Haj affiliated with any hospitals?
According to CMS data, Amelia Haj is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Amelia Haj was last updated on March 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Amelia Haj, MD, PHD · NPI 1023695962
Anatomic Pathology & Clinical Pathology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 26, 2021.
## Identity
- **NPI:** 1023695962 (Entity type: Individual)
- **Enumerated:** March 26, 2021
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 1018203 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2696
- **Phone:** (617) 643-0800
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Mass General Brigham Community Physicians Inc (NPI 1548638265, Medford, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** March 11, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1023695962) · Data from the CMS NPPES public registry.