WILLIAM C DENISON M.D.
NPI 1124006911
Radiology - Diagnostic Radiology in Newton, MA
About William C Denison M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM C DENISON M.D. (NPI 1124006911) is an individual diagnostic radiology provider in Newton, Massachusetts, licensed in Massachusetts (81669) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William C Denison M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show William Denison reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 24 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 170 clinicians in this Medicare group
Cambridge, MA 02142
- Reassigned Medicare billing, Massachusetts enrollment
- 119 clinicians in this Medicare group
South Weymouth, MA 02190
- Reassigned Medicare billing, Massachusetts enrollment
- 419 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 02462 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.
NEWTON, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
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 William Denison's NPI number?
The NPI number for William Denison is 1124006911. It was assigned to this individual provider in the NPPES registry on January 3, 2006.
Where is William Denison located?
William Denison practices at 2014 Washington Street, Newton, MA 02462. The listed phone number is (617) 243-6162.
What is William Denison's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is William Denison enrolled in Medicare?
Yes. William Denison is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for William Denison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Denison reassigns Medicare benefits to 5 organizations: Schatzki Associates Inc. (Cambridge, MA), Brigham & Womens Physicians Organization Inc (Boston, MA), President & Fellows Of Harvard College (Cambridge, MA), Massachusetts Institute Of Technology (Cambridge, MA) and Harbor Medical Associates, Inc. (South Weymouth, MA). Each 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 William Denison'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 William Denison was last updated on October 17, 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.
# William C Denison, M.D. · NPI 1124006911
Diagnostic Radiology physician in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since January 3, 2006.
## Identity
- **NPI:** 1124006911 (Entity type: Individual)
- **Enumerated:** January 3, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 81669 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 2014 WASHINGTON STREET, Newton, MA 02462
- **Phone:** (617) 243-6162
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Schatzki Associates Inc. (NPI 1245384114, Cambridge, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); President & Fellows Of Harvard College (NPI 1952366312, Cambridge, MA); Massachusetts Institute Of Technology (NPI 1346308723, Cambridge, MA); Harbor Medical Associates, Inc. (NPI 1124079561, South Weymouth, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 17, 2011
- **Other identifiers:** Medicaid 3145123 (MA); Medicare PIN A21820 (MA); Medicare UPIN B10386
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Source: [NPI Profile](https://npiprofile.com/npi/1124006911) · Data from the CMS NPPES public registry.