MOSTAFA AMER AL-ALUSI MD
NPI 1538689773
Internal Medicine - Cardiovascular Disease in Boston, MA
About Mostafa Amer Al-alusi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MOSTAFA AMER AL-ALUSI MD (NPI 1538689773) is an individual cardiovascular disease provider in Boston, Massachusetts, licensed in Massachusetts (271110) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses
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
Mostafa Amer Al-alusi 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 Mostafa Al-alusi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
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.
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
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 Mostafa Al-alusi's NPI number?
The NPI number for Mostafa Al-alusi is 1538689773. It was assigned to this individual provider in the NPPES registry on June 20, 2017.
Where is Mostafa Al-alusi located?
Mostafa Al-alusi practices at Massachusetts General Hospital 55 Fruit St., Boston, MA 02114. The listed phone number is (617) 643-0596.
What is Mostafa Al-alusi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Mostafa Al-alusi enrolled in Medicare?
Yes. Mostafa Al-alusi 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 Mostafa Al-alusi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mostafa Al-alusi reassigns Medicare benefits to 3 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), 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 Mostafa Al-alusi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mostafa Al-alusi accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Mostafa Al-alusi 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 Mostafa Al-alusi affiliated with any hospitals?
According to CMS data, Mostafa Al-alusi is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Mostafa Al-alusi was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.
# Mostafa Amer Al-Alusi, MD · NPI 1538689773
Cardiovascular Disease physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 20, 2017.
## Identity
- **NPI:** 1538689773 (Entity type: Individual)
- **Enumerated:** June 20, 2017
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 271110 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST., Boston, MA 02114
- **Phone:** (617) 643-0596
## 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): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); 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:** University Of California, Geffen School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** May 26, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1538689773) · Data from the CMS NPPES public registry.