DR. KARL YOUSEF M.D.
NPI 1225561384
Emergency Medicine - Emergency Medical Services in Phoenix, AZ
About Dr. Karl Yousef M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KARL YOUSEF M.D. (NPI 1225561384) is an individual emergency medical services provider in Phoenix, Arizona, licensed in Arizona (75308) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with University Medical Center Of El Paso, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Other Identifiers 2
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
Dr. Karl Yousef 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
4Medicare enrollment records show Karl Yousef reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 clinicians in this Medicare group
Mesa, AZ 85202
- Reassigned Medicare billing, Arizona enrollment
- 174 clinicians in this Medicare group
El Paso, TX 79911
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Texas Tech University Health Sciences Center El Paso
- 856 clinicians in this Medicare group
El Paso, TX 79924
- Reassigned Medicare billing, Texas enrollment
- 87 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Medical Center Of El Paso
Acute Care Hospitals · El Paso, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85016 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.
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 Karl Yousef's NPI number?
The NPI number for Karl Yousef is 1225561384. It was assigned to this individual provider in the NPPES registry on April 6, 2017.
Where is Karl Yousef located?
Karl Yousef practices at 4212 N 16th St, Phoenix, AZ 85016. The listed phone number is (602) 263-1200.
What is Karl Yousef's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is Karl Yousef enrolled in Medicare?
Yes. Karl Yousef 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 Karl Yousef's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karl Yousef reassigns Medicare benefits to 4 organizations: District Medical Group, Inc (Phoenix, AZ), Cep America - Arizona PC (Mesa, AZ), Texas Tech University Health Sciences Center (El Paso, TX) and Cep America LLC (El Paso, TX). 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 Karl Yousef's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karl Yousef accept?
Health plans from 22 Health, Ambetter Health, Ambetter of Alabama, Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc and 4 other insurers list Karl Yousef 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 Karl Yousef affiliated with any hospitals?
According to CMS data, Karl Yousef is affiliated with University Medical Center Of El Paso.
When was this NPI record last updated?
The NPPES record for Karl Yousef was last updated on September 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 51 days 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.