COURTNEY ERIN BRENNAN M.D.
NPI 1851787584
Pediatrics in Los Angeles, CA
About Courtney Erin Brennan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COURTNEY ERIN BRENNAN M.D. (NPI 1851787584) is an individual pediatrics provider in Los Angeles, California, licensed in California (A129135) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses
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
Courtney Erin Brennan M.d. 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 Reassignment
Medicare enrollment records show Courtney Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Los Angeles Medical Group Inc
- 1,281 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 90027 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.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Courtney Brennan's NPI number?
The NPI number for Courtney Brennan is 1851787584. It was assigned to this individual provider in the NPPES registry on April 9, 2015.
Where is Courtney Brennan located?
Courtney Brennan practices at 4650 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 361-2122.
What is Courtney Brennan's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Courtney Brennan enrolled in Medicare?
Yes. Courtney 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 organization bills Medicare for Courtney Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Courtney Brennan reassigns Medicare benefits to Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, CA). 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 Courtney 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 Courtney Brennan was last updated on May 12, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Courtney Erin Brennan, M.D. · NPI 1851787584
Pediatrics physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since April 9, 2015.
## Identity
- **NPI:** 1851787584 (Entity type: Individual)
- **Enumerated:** April 9, 2015
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A129135 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD, Los Angeles, CA 90027-6062
- **Phone:** (323) 361-2122
## 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:** Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2012
## Record status
- **NPPES last updated:** May 12, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1851787584) · Data from the CMS NPPES public registry.