KATHERINE ELIZABETH BRENNAN MD
NPI 1497241020
Internal Medicine - Cardiovascular Disease in Lafayette, LA
About Katherine Elizabeth Brennan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE ELIZABETH BRENNAN MD (NPI 1497241020) is an individual cardiovascular disease provider in Lafayette, Louisiana, licensed in Louisiana (343487) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS, is affiliated with Ochsner Lafayette General Medical Center, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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 Elizabeth Brennan 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
6Medicare enrollment records show Katherine Brennan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lafayette, LA 70503
- Reassigned Medicare billing, Louisiana enrollment
- 428 clinicians in this Medicare group
Lafayette, LA 70503
- Reassigned Medicare billing, Louisiana enrollment
- 151 clinicians in this Medicare group
Lafayette, LA 70506
- Reassigned Medicare billing, Louisiana enrollment
- 548 clinicians in this Medicare group
Breaux Bridge, LA 70517
- Reassigned Medicare billing, Louisiana enrollment
- 47 clinicians in this Medicare group
Jennings, LA 70546
- Reassigned Medicare billing, Louisiana enrollment
- 48 clinicians in this Medicare group
Houma, LA 70360
- Reassigned Medicare billing, Louisiana enrollment
- 162 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 8
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ochsner Lafayette General Medical Center
Acute Care Hospitals · Lafayette, LAAcadia General Hospital
Acute Care Hospitals · Crowley, LAOchsner American Legion Hospital
Acute Care Hospitals · Jennings, LAOchsner St Martin Hospital
Critical Access Hospitals · Breaux Bridge, LAAbrom Kaplan Memorial Hospital
Critical Access Hospitals · Kaplan, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70503 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
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.
LAFAYETTE, LA 70503
LAFAYETTE, LA 70503
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 Brennan's NPI number?
The NPI number for Katherine Brennan is 1497241020. It was assigned to this individual provider in the NPPES registry on July 6, 2018.
Where is Katherine Brennan located?
Katherine Brennan practices at 441 Heymann Blvd, Lafayette, LA 70503. The listed phone number is (337) 289-8429.
What is Katherine Brennan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Katherine Brennan enrolled in Medicare?
Yes. Katherine Brennan 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 Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Brennan reassigns Medicare benefits to 6 organizations: Lafayette Health Ventures, Inc (Lafayette, LA), Lafayette General Medical Center Inc (Lafayette, LA), Lsuhn Billing LLC (Lafayette, LA), St. Martin Hospital, Inc. (Breaux Bridge, LA), Ochsner American Legion Hospital LLC (Jennings, LA) and 1 more organization, listed in the Medicare section above. 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 Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Brennan accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Blue Cross and Blue Shield of Louisiana and 1 other insurer list Katherine Brennan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Katherine Brennan affiliated with any hospitals?
According to CMS data, Katherine Brennan is affiliated with Ochsner Lafayette General Medical Center, Acadia General Hospital, Ochsner American Legion Hospital, Ochsner St Martin Hospital and Abrom Kaplan Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Brennan was last updated on October 2, 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.
# Katherine Elizabeth Brennan, MD · NPI 1497241020
Cardiovascular Disease physician in Lafayette, Louisiana. Individual provider, active in the CMS NPPES registry since July 6, 2018.
## Identity
- **NPI:** 1497241020 (Entity type: Individual)
- **Enumerated:** July 6, 2018
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 343487 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 441 HEYMANN BLVD, Lafayette, LA 70503-2611
- **Phone:** (337) 289-8429
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Lafayette Health Ventures, Inc (NPI 1467687186, Lafayette, LA); Lafayette General Medical Center Inc (NPI 1518577030, Lafayette, LA); Lsuhn Billing LLC (NPI 1992975775, Lafayette, LA); St. Martin Hospital, Inc. (NPI 1407175615, Breaux Bridge, LA); Ochsner American Legion Hospital LLC (NPI 1093465163, Jennings, LA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** October 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1497241020) · Data from the CMS NPPES public registry.