KATHERINE MICHELLE DILLON MD
NPI 1639532047
Anesthesiology in Newton, MA
About Katherine Michelle Dillon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE MICHELLE DILLON MD (NPI 1639532047) is an individual anesthesiology provider in Newton, Massachusetts, licensed in Massachusetts (282163) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Newton-wellesley Hospital, and maintains a secondary practice location in Worcester.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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 and accepts Medicare assignment
Katherine Michelle Dillon 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 Reassignments
2Medicare enrollment records show Katherine Dillon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newton, MA 02462
- Reassigned Medicare billing, Massachusetts enrollment
- 116 clinicians in this Medicare group
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 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 2
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Newton-Wellesley Hospital
Acute Care Hospitals · Newton, MAOther 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
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 Katherine Dillon's NPI number?
The NPI number for Katherine Dillon is 1639532047. It was assigned to this individual provider in the NPPES registry on April 2, 2016.
Where is Katherine Dillon located?
Katherine Dillon practices at 2014 Washington St, Newton, MA 02462. The listed phone number is (802) 258-1923.
What is Katherine Dillon's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Katherine Dillon enrolled in Medicare?
Yes. Katherine Dillon 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 organizations bill Medicare for Katherine Dillon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Dillon reassigns Medicare benefits to 2 organizations: Commonwealth Anesthesia Associates, Inc (Newton, MA) and Umass Memorial Medical Group Inc (Worcester, 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 Katherine Dillon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Katherine Dillon affiliated with any hospitals?
According to CMS data, Katherine Dillon is affiliated with Newton-Wellesley Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Dillon was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Katherine Michelle Dillon, MD · NPI 1639532047
Anesthesiology physician in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since April 2, 2016.
## Identity
- **NPI:** 1639532047 (Entity type: Individual)
- **Enumerated:** April 2, 2016
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 282163 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 2014 WASHINGTON ST, Newton, MA 02462-1607
- **Phone:** (802) 258-1923
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Commonwealth Anesthesia Associates, Inc (NPI 1184645194, Newton, MA); Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Vermont College Of Medicine, class of 2016
## Record status
- **NPPES last updated:** July 28, 2026
- **Other identifiers:** Medicaid 110164856A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1639532047) · Data from the CMS NPPES public registry.