KATIE DYMPNA PATRICIA IADONISI MSN, A-GNP-C, OCN
NPI 1639808603
Nurse Practitioner - Adult Health in South Weymouth, MA
About Katie Dympna Patricia Iadonisi Msn, A-gnp-c, Ocn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATIE DYMPNA PATRICIA IADONISI MSN, A-GNP-C, OCN (NPI 1639808603) is an individual adult health provider in South Weymouth, Massachusetts, licensed in Massachusetts (RN2361573) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Katie Dympna Patricia Iadonisi Msn, A-gnp-c, Ocn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Katie Iadonisi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,026 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 02190 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.
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
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 Katie Iadonisi's NPI number?
The NPI number for Katie Iadonisi is 1639808603. It was assigned to this individual provider in the NPPES registry on June 6, 2022. The provider is also known as Katie Kenny.
Where is Katie Iadonisi located?
Katie Iadonisi practices at 101 Columbian St, South Weymouth, MA 02190. The listed phone number is (781) 624-4800.
What is Katie Iadonisi's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Katie Iadonisi enrolled in Medicare?
Yes. Katie Iadonisi is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Katie Iadonisi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katie Iadonisi reassigns Medicare benefits to Dana-Farber Cancer Institute, 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 Katie Iadonisi'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 Katie Iadonisi was last updated on February 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Katie Dympna Patricia Iadonisi, MSN, A-GNP-C, OCN · NPI 1639808603
Adult Health physician in South Weymouth, Massachusetts. Individual provider, active in the CMS NPPES registry since June 6, 2022.
## Identity
- **NPI:** 1639808603 (Entity type: Individual)
- **Enumerated:** June 6, 2022
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** RN2361573 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 COLUMBIAN ST, South Weymouth, MA 02190-1601
- **Phone:** (781) 624-4800
## 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:** Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 2, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1639808603) · Data from the CMS NPPES public registry.