BRETT DIAMOND MD
NPI 1619437340
Radiology - Radiation Oncology in Boston, MA
About Brett Diamond Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRETT DIAMOND MD (NPI 1619437340) is an individual radiation oncology provider in Boston, Massachusetts, licensed in Massachusetts (1017918) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Lowell General Hospital, and is a graduate of Other (2019).
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 and accepts Medicare assignment
Brett Diamond 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 Reassignment
Medicare enrollment records show Brett Diamond reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 11 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lowell General Hospital
Acute Care Hospitals · Lowell, MATufts Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02111 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 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Brett Diamond's NPI number?
The NPI number for Brett Diamond is 1619437340. It was assigned to this individual provider in the NPPES registry on March 20, 2019.
Where is Brett Diamond located?
Brett Diamond practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-6161.
What is Brett Diamond's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Brett Diamond enrolled in Medicare?
Yes. Brett Diamond 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 organization bills Medicare for Brett Diamond's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Diamond reassigns Medicare benefits to Pratt Radiation Oncology Associates 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 Brett Diamond's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Diamond accept?
Health plans from Taro Health list Brett Diamond 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 Brett Diamond affiliated with any hospitals?
According to CMS data, Brett Diamond is affiliated with Lowell General Hospital and Tufts Medical Center.
When was this NPI record last updated?
The NPPES record for Brett Diamond was last updated on July 3, 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.