Individual provider

Faaiza Mahmoud, M.D.

Neuroradiology Physician Nuclear Radiology Physician Pediatric Radiology Physician Medicare enrolled

Faaiza Mahmoud, M.D. is a Body Imaging Physician in Chicago, IL, registered under NPI 1881643559. This provider registers 7 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 1653 W CONGRESS PKWY, Chicago, IL 60612. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

1653 W CONGRESS PKWY, Chicago, IL 60612 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
036.131763 IL Neuroradiology Physician
036.131763 IL Nuclear Radiology Physician
036.131763 IL Pediatric Radiology Physician
036.131763 IL Diagnostic Radiology Physician
036.131763 IL Therapeutic Radiology Physician
036.131763 IL Diagnostic Ultrasound Physician
036.131763 IL Body Imaging Physician primary

This provider holds licence 036.131763 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Diagnostic Radiology
PAC ID
1658456991

Enrolled in Medicare 2 times, across 2 states:

StateEnrollment IDProvider type
Illinois I20140528002017 Practitioner - Diagnostic Radiology
Indiana I20250402000508 Practitioner - Diagnostic Radiology

Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. There are 2 separate enrolment records across 2 states (IL, IN). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Body Imaging covers

A Radiology doctor of Osteopathy that specializes in Body Imaging. NUCC Health Care Provider Taxonomy, code 2085B0100X
Allopathic & Osteopathic Physicians Radiology Body Imaging

All registered taxonomy codes

This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
2085N0700X Neuroradiology Physician Neuroradiology 036.131763 IL
2085N0904X Nuclear Radiology Physician Nuclear Radiology 036.131763 IL
2085P0229X Pediatric Radiology Physician Pediatric Radiology 036.131763 IL
2085R0202X Diagnostic Radiology Physician Diagnostic Radiology 036.131763 IL
2085R0203X Therapeutic Radiology Physician Therapeutic Radiology 036.131763 IL
2085U0001X Diagnostic Ultrasound Physician Diagnostic Ultrasound 036.131763 IL
2085B0100X Body Imaging Physician Body Imaging 036.131763 IL primary

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.

NPI1881643559 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateMay 9, 2006
Last updatedFeb 20, 2025
StatusActive
Sole proprietorNo
GenderFemale
CredentialM.D.
Practice address 1653 W CONGRESS PKWY
Chicago, IL 60612
(312) 942-5000
This record was updated on Feb 20, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1881643559 passes the NPI check digit test The final digit 9 matches the value computed from the first nine digits, so this is a well-formed NPI.
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 8 8 1 6 4 3 5 5
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 8 7 1 3 4 6 5 1

Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9

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.

Common questions

What is NPI number 1881643559?
NPI 1881643559 is the National Provider Identifier assigned to Faaiza Mahmoud, M.D. in Chicago, IL. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Body Imaging cover?
A Radiology doctor of Osteopathy that specializes in Body Imaging.
How do I contact Faaiza Mahmoud, M.D.?
The phone number on file with NPPES is (312) 942-5000, last updated Feb 20, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Faaiza Mahmoud, M.D. accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1881643559 a valid number?
Yes. 1881643559 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.