BRITTANY LEAH GRZYBOWSKI
NPI 1598127128
Emergency Medicine in Los Angeles, CA
About Brittany Leah Grzybowski NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRITTANY LEAH GRZYBOWSKI (NPI 1598127128) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A150328) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses 2
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
Brittany Leah Grzybowski 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
3Medicare enrollment records show Brittany Grzybowski reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 64 clinicians in this Medicare group
Santa Clarita, CA 91387
- Reassigned Medicare billing, California enrollment
- 684 clinicians in this Medicare group
Calabasas, CA 91302
- Reassigned Medicare billing, California enrollment
- 256 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 90033 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 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Brittany Grzybowski's NPI number?
The NPI number for Brittany Grzybowski is 1598127128. It was assigned to this individual provider in the NPPES registry on March 23, 2016.
Where is Brittany Grzybowski located?
Brittany Grzybowski practices at 2051 Marengo St, Los Angeles, CA 90033. The listed phone number is (323) 409-1000.
What is Brittany Grzybowski's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Brittany Grzybowski enrolled in Medicare?
Yes. Brittany Grzybowski 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 Brittany Grzybowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brittany Grzybowski reassigns Medicare benefits to 3 organizations: Hmh Emergency Medical Group, Inc. (Pasadena, CA), Providence Facey Medical Foundation (Santa Clarita, CA) and Exer Medical Corporation (Calabasas, CA). 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 Brittany Grzybowski'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 Brittany Grzybowski was last updated on May 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Brittany Leah Grzybowski · NPI 1598127128
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 23, 2016.
## Identity
- **NPI:** 1598127128 (Entity type: Individual)
- **Enumerated:** March 23, 2016
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A150328 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2051 MARENGO ST, Los Angeles, CA 90033-1352
- **Phone:** (323) 409-1000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Hmh Emergency Medical Group, Inc. (NPI 1659383024, Pasadena, CA); Providence Facey Medical Foundation (NPI 1922651561, Santa Clarita, CA); Exer Medical Corporation (NPI 1588901532, Calabasas, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** May 14, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1598127128) · Data from the CMS NPPES public registry.