Omar Kallas, M.D.
Omar Kallas, M.D. is a Diagnostic Radiology Physician in Atlanta, GA, registered under NPI 1003201336.
Getting there
Here is what surrounds this office in Atlanta, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.41 mi away. The nearest transit stop is 0.45 mi away, served by Clifton Rd & Houston Mill Rd. A pharmacy sits 0.48 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Transit Clifton - Clinic 172 ft ~1 min
Transit Clifton Rd & Woodruff Cir 259 ft ~1 min
Clifton RD NE
Parking Physician's Parking Deck 551 ft ~3 min
1716 Uppergate Drive, Atlanta 30322
Hotel University Inn 0.26 mi ~6 min
Coffee Bread Coffeehouse 0.30 mi ~7 min
Parking Michael Street Parking Deck 0.33 mi ~7 min
Parking 0.41 mi ~9 min
1525 Clifton Road, 30322
Coffee Starbucks 0.42 mi ~9 min
Restaurant Yogli Mogli 0.43 mi ~9 min
Restaurant Chipotle 0.43 mi ~9 min
Restaurant Zoës Kitchen 0.44 mi ~9 min
1385 Oxford Road Northeast, Atlanta 30307
Transit Clifton Rd & Houston Mill Rd 0.45 mi ~9 min
Clifton RD, Atlanta
Pharmacy CVS Pharmacy 0.48 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 84802 | GA | Diagnostic Radiology Physician primary |
This provider holds licence 84802 issued in GA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Diagnostic Radiology
- PAC ID
- 1850703760
- Enrollment ID
- I20210803002696
Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Diagnostic Radiology covers
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003201336 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 3, 2015 |
| Last updated | Jun 10, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
1364 CLIFTON ROAD DEPARTMENT OF RADIOLOGY AND IMAGING SCIENCES Atlanta, GA 30322 (404) 778-3900 |
| Mailing address |
1364 CLIFTON RD NE DEPARTMENT OF RADIOLOGY AND IMAGING SCIENCES Atlanta, GA 30322 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 0 | 1 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 2 | 3 | 6 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.