DR. JOHN L BRUSCH MD
NPI 1639138449
Internal Medicine in Cambridge, MA
About Dr. John L Brusch Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN L BRUSCH MD (NPI 1639138449) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (32675) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John L Brusch Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Brusch reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 719 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 02139 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 John Brusch's NPI number?
The NPI number for John Brusch is 1639138449. It was assigned to this individual provider in the NPPES registry on March 21, 2006.
Where is John Brusch located?
John Brusch practices at 1493 Cambridge Street Cahill Building Cambridge Hospital, Cambridge, MA 02139. The listed phone number is (617) 661-1800.
What is John Brusch's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Brusch enrolled in Medicare?
Yes. John Brusch is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Brusch's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Brusch reassigns Medicare benefits to Cambridge Public Health Commission (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 John Brusch'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 John Brusch was last updated on February 2, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. John L Brusch, MD · NPI 1639138449
Internal Medicine physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since March 21, 2006.
## Identity
- **NPI:** 1639138449 (Entity type: Individual)
- **Enumerated:** March 21, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 32675 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1493 CAMBRIDGE STREET CAHILL BUILDING, CAMBRIDGE HOSPITAL, Cambridge, MA 02139
- **Phone:** (617) 661-1800 · **Fax:** (617) 661-7416
## 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:** Cambridge Public Health Commission (NPI 1487603585, Cambridge, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 2, 2012
- **Other identifiers:** Other 032675 (MA); Medicare ID-Type Unspecified M12752; Medicaid 9728589 (MA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1639138449) · Data from the CMS NPPES public registry.