OMAR NABIL KALLAS M.D.
NPI 1003201336
Radiology - Diagnostic Radiology in Atlanta, GA
About Omar Nabil Kallas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OMAR NABIL KALLAS M.D. (NPI 1003201336) is an individual diagnostic radiology provider in Atlanta, Georgia, licensed in Georgia (84802) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2015).
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
Omar Nabil Kallas 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
18Medicare enrollment records show Omar Kallas reassigns Medicare billing to 18 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Gainesville, GA 30501
- Reassigned Medicare billing, California enrollment
- 11 clinicians in this Medicare group
Concord, CA 94520
- Reassigned Medicare billing, California enrollment
- 238 clinicians in this Medicare group
Palm Desert, CA 92260
- Reassigned Medicare billing, California enrollment
- 278 clinicians in this Medicare group
Barstow, CA 92311
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1114112372 (California)
- 335 clinicians in this Medicare group
Ramona, CA 92065
- Reassigned Medicare billing, California enrollment
- 144 clinicians in this Medicare group
Chula Vista, CA 91911
- Reassigned Medicare billing, California enrollment
- 51 clinicians in this Medicare group
Chula Vista, CA 91911
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: San Diego Diagnostic Radiology Medical Group Inc
- 71 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 39 clinicians in this Medicare group
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 71 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 64
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 30322 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ATLANTA, GA 30322
ATLANTA, GA 30322
ATLANTA, GA 30322
ATLANTA, GA 30322
ATLANTA, GA 30322
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 Omar Kallas's NPI number?
The NPI number for Omar Kallas is 1003201336. It was assigned to this individual provider in the NPPES registry on April 3, 2015.
Where is Omar Kallas located?
Omar Kallas practices at 1364 Clifton Road Department Of Radiology And Imaging Sciences, Atlanta, GA 30322. The listed phone number is (404) 778-3900.
What is Omar Kallas's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Omar Kallas enrolled in Medicare?
Yes. Omar Kallas 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 Omar Kallas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Omar Kallas reassigns Medicare benefits to 18 organizations: Gainesville Radiology Group, PC (Gainesville, GA), Norcal Imaging (Concord, CA), Desert Advanced Imaging Medical Center (Palm Desert, CA), Beverly Radiology Medical Group III (Barstow, CA), Arch Health Partners (Ramona, CA) and 13 more organizations, listed in the Medicare section above. 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 Omar Kallas'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 Omar Kallas was last updated on June 10, 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.