BRIAN MICHAEL ALEXANDER M.D.
NPI 1275511149
Radiology - Radiation Oncology in Boston, MA
About Brian Michael Alexander M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRIAN MICHAEL ALEXANDER M.D. (NPI 1275511149) is an individual radiation oncology provider in Boston, Massachusetts, licensed in Massachusetts (227432) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Brian Michael Alexander M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Brian Alexander reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 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 02115
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Brian Alexander's NPI number?
The NPI number for Brian Alexander is 1275511149. It was assigned to this individual provider in the NPPES registry on January 2, 2006.
Where is Brian Alexander located?
Brian Alexander practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-5500.
What is Brian Alexander's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Brian Alexander enrolled in Medicare?
Yes. Brian Alexander is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Brian Alexander's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Alexander reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). The 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 Brian Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brian Alexander accept?
Health plans from Taro Health list Brian Alexander 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.
When was this NPI record last updated?
The NPPES record for Brian Alexander was last updated on October 6, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Brian Michael Alexander, M.D. · NPI 1275511149
Radiation Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 2, 2006.
## Identity
- **NPI:** 1275511149 (Entity type: Individual)
- **Enumerated:** January 2, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** 227432 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6110
- **Phone:** (617) 732-5500
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1275511149) · Data from the CMS NPPES public registry.