NANCY L BRENNAN DO
NPI 1396725834
Family Medicine in Bend, OR
About Nancy L Brennan Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NANCY L BRENNAN DO (NPI 1396725834) is an individual family medicine provider in Bend, Oregon, licensed in Oregon (DO18175) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
Nancy L Brennan Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Nancy Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bend, OR 97701
- Reassigned Medicare billing, Oregon enrollment
- 348 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 5
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 9
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Nancy Brennan's NPI number?
The NPI number for Nancy Brennan is 1396725834. It was assigned to this individual provider in the NPPES registry on January 19, 2006.
Where is Nancy Brennan located?
Nancy Brennan practices at 2600 NE Neff Rd, Bend, OR 97701. The listed phone number is (541) 706-4800.
What is Nancy Brennan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Nancy Brennan enrolled in Medicare?
Yes. Nancy Brennan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Nancy Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Brennan reassigns Medicare benefits to St. Charles Health System, Inc. (Bend, OR). 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 Nancy Brennan'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 Nancy Brennan was last updated on May 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.