DR. GWENDOLYN CECILIA HOOLEY MD
NPI 1558865220
Emergency Medicine in Los Angeles, CA
About Dr. Gwendolyn Cecilia Hooley Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GWENDOLYN CECILIA HOOLEY MD (NPI 1558865220) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A178792) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of New York University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 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
Dr. Gwendolyn Cecilia Hooley 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
4Medicare enrollment records show Gwendolyn Hooley reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 135 clinicians in this Medicare group
Los Angeles, CA 90034
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
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
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90095 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.
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 Gwendolyn Hooley's NPI number?
The NPI number for Gwendolyn Hooley is 1558865220. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is Gwendolyn Hooley located?
Gwendolyn Hooley practices at 757 Westwood Plz Ste 1517, Los Angeles, CA 90095. The listed phone number is (310) 825-9111.
What is Gwendolyn Hooley's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gwendolyn Hooley enrolled in Medicare?
Yes. Gwendolyn Hooley 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 Gwendolyn Hooley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gwendolyn Hooley reassigns Medicare benefits to 4 organizations: Regents Of The Univ Of Ca Emer Med (Los Angeles, CA), Southern California Permanente Medical Group (Los Angeles, CA), Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, CA) and Usc Care Medical Group, Inc (Los Angeles, 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 Gwendolyn Hooley'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 Gwendolyn Hooley was last updated on July 1, 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.
# Dr. Gwendolyn Cecilia Hooley, MD · NPI 1558865220
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 19, 2018.
## Identity
- **NPI:** 1558865220 (Entity type: Individual)
- **Enumerated:** March 19, 2018
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A178792 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 757 WESTWOOD PLZ STE 1517, Los Angeles, CA 90095-6062
- **Phone:** (310) 825-9111
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The Univ Of Ca Emer Med (NPI 1104889138, Los Angeles, CA); Southern California Permanente Medical Group (NPI 1043242563, Los Angeles, CA); Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA); Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** July 1, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1558865220) · Data from the CMS NPPES public registry.