DR. GEORGE M. KARROUM M.D.
NPI 1447205919
Emergency Medicine in Los Angeles, CA
About Dr. George M. Karroum M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GEORGE M. KARROUM M.D. (NPI 1447205919) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A34648) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1966).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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. George M. Karroum 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 Reassignments
3Medicare enrollment records show George Karroum reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90023
- Reassigned Medicare billing, California enrollment
- 31 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 55 clinicians in this Medicare group
Panorama City, CA 91402
- Reassigned Medicare billing, California enrollment
- 121 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 90023 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 George Karroum's NPI number?
The NPI number for George Karroum is 1447205919. It was assigned to this individual provider in the NPPES registry on May 23, 2006.
Where is George Karroum located?
George Karroum practices at 4081 East Olympic Boulevard, Los Angeles, CA 90023. The listed phone number is (323) 881-2666.
What is George Karroum's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is George Karroum enrolled in Medicare?
Yes. George Karroum 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 George Karroum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), George Karroum reassigns Medicare benefits to 3 organizations: ER Physicians Medical Group, Inc. (Los Angeles, CA), California Hospitalists Emergency Physicians Medical Group Inc (Norwalk, CA) and Can Emergency Physicians Medical Group, Inc. (Panorama City, 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 George Karroum'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 George Karroum was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. George M. Karroum, M.D. · NPI 1447205919
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 23, 2006.
## Identity
- **NPI:** 1447205919 (Entity type: Individual)
- **Enumerated:** May 23, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A34648 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4081 EAST OLYMPIC BOULEVARD, Los Angeles, CA 90023-3330
- **Phone:** (323) 881-2666 · **Fax:** (323) 267-4530
## 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): ER Physicians Medical Group, Inc. (NPI 1063765907, Los Angeles, CA); California Hospitalists Emergency Physicians Medical Group Inc (NPI 1760648539, Norwalk, CA); Can Emergency Physicians Medical Group, Inc. (NPI 1265810006, Panorama City, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1966
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Other 00A346480 (CA); Medicaid 00A346480 (CA); Other 00A346480 (CA); and 2 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1447205919) · Data from the CMS NPPES public registry.