ALAN D BRUSH M.D.
NPI 1043281942
Internal Medicine in Cambridge, MA
About Alan D Brush M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALAN D BRUSH M.D. (NPI 1043281942) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (35858) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Alan D Brush M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alan Brush reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 1,317 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 02138 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.
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 Alan Brush's NPI number?
The NPI number for Alan Brush is 1043281942. It was assigned to this individual provider in the NPPES registry on January 30, 2006.
Where is Alan Brush located?
Alan Brush practices at 1611 Cambridge St Internal Medicine, Cambridge, MA 02138. The listed phone number is (617) 661-5450.
What is Alan Brush's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Alan Brush enrolled in Medicare?
Yes. Alan Brush is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alan Brush's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alan Brush reassigns Medicare benefits to Atrius Health, Inc. (Cambridge, 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 Alan Brush's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alan Brush was last updated on May 25, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Alan D Brush, M.D. · NPI 1043281942
Internal Medicine physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since January 30, 2006.
## Identity
- **NPI:** 1043281942 (Entity type: Individual)
- **Enumerated:** January 30, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 35858 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1611 CAMBRIDGE ST, INTERNAL MEDICINE, Cambridge, MA 02138-4302
- **Phone:** (617) 661-5450 · **Fax:** (617) 661-5226
## 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:** Atrius Health, Inc. (NPI 1427271584, Cambridge, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 25, 2011
- **Other identifiers:** Other PM243 (MA); Other 035858 (MA); Medicaid 3192547 (MA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1043281942) · Data from the CMS NPPES public registry.