MR. D J MAZZONI RD
NPI 1235710997
Dietitian, Registered in Concord, MA
About Mr. D J Mazzoni Rd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. D J MAZZONI RD (NPI 1235710997) is an individual dietitian, registered in Concord, Massachusetts, licensed in Massachusetts (LDN6799) and active in the NPI registry since April 2021. He maintains a secondary practice location in Buffalo.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. D J Mazzoni Rd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show D Mazzoni reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Leominster, MA 01453
- Reassigned Medicare billing, Massachusetts enrollment
- 7 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.
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 D Mazzoni's NPI number?
The NPI number for D Mazzoni is 1235710997. It was assigned to this individual provider in the NPPES registry on April 15, 2021.
Where is D Mazzoni located?
D Mazzoni practices at 4 Nathan Pratt Dr Unit 107, Concord, MA 01742. The listed phone number is (781) 591-0444.
What is D Mazzoni's specialty?
The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.
Is D Mazzoni enrolled in Medicare?
Yes. D Mazzoni is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for D Mazzoni's services?
According to the CMS Revalidation Reassignment List (October 2026 release), D Mazzoni reassigns Medicare benefits to Umass Memorial Healthalliance Clinton Hospital Inc (Leominster, 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 D Mazzoni'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 D Mazzoni was last updated on January 11, 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.
# Mr. D J Mazzoni, RD · NPI 1235710997
Dietitian, Registered provider in Concord, Massachusetts. Individual provider, active in the CMS NPPES registry since April 15, 2021.
## Identity
- **NPI:** 1235710997 (Entity type: Individual)
- **Enumerated:** April 15, 2021
- **Primary specialty:** Dietitian, Registered · taxonomy 133V00000X
- **State license:** LDN6799 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4 NATHAN PRATT DR UNIT 107, Concord, MA 01742-4640
- **Phone:** (781) 591-0444
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Umass Memorial Healthalliance Clinton Hospital Inc (NPI 1841852811, Leominster, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 11, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1235710997) · Data from the CMS NPPES public registry.