DR. DAVID VAN DIAMOND MD
NPI 1265411664
Internal Medicine in Cambridge, MA
About Dr. David Van Diamond Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID VAN DIAMOND MD (NPI 1265411664) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (44907) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. David Van Diamond Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show David Diamond reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cambridge, MA 02142
- Reassigned Medicare billing, Massachusetts enrollment
- 119 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.
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.
CAMBRIDGE, MA 02139
CAMBRIDGE, MA 02139
CAMBRIDGE, MA 02139
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 David Diamond's NPI number?
The NPI number for David Diamond is 1265411664. It was assigned to this individual provider in the NPPES registry on January 13, 2006.
Where is David Diamond located?
David Diamond practices at 77 Massachusetts Ave Mit E23/209, Cambridge, MA 02139. The listed phone number is (617) 253-7625.
What is David Diamond's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is David Diamond enrolled in Medicare?
Yes. David Diamond is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for David Diamond's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Diamond reassigns Medicare benefits to Massachusetts Institute Of Technology (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 David Diamond'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 David Diamond was last updated on April 5, 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. David Van Diamond, MD · NPI 1265411664
Internal Medicine physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since January 13, 2006.
## Identity
- **NPI:** 1265411664 (Entity type: Individual)
- **Enumerated:** January 13, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 44907 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 77 MASSACHUSETTS AVE, MIT E23/209, Cambridge, MA 02139
- **Phone:** (617) 253-7625 · **Fax:** (617) 253-6373
## 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:** Massachusetts Institute Of Technology (NPI 1346308723, Cambridge, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 5, 2012
- **Other identifiers:** Medicare UPIN B74211
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Source: [NPI Profile](https://npiprofile.com/npi/1265411664) · Data from the CMS NPPES public registry.