MARIAM S AZIZ MD
NPI 1891954491
Internal Medicine - Infectious Disease in Chicago, IL

Q: What is Mariam Aziz's NPI number?

The NPI number for Mariam Aziz is 1891954491. It was assigned to this individual provider in the NPPES registry on June 9, 2008.

Q: What is Mariam Aziz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Mariam Aziz was last updated on April 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since June 09, 2008PECOS EnrolledAccepts Medicare Assignment

600 S PAULINA ST, SUITE 140, CHICAGO, IL 60612(312) 942-5865(312) 942-2184 Get Directions Write a Review

NPPES record last updated: April 21, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Mariam S Aziz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIAM S AZIZ MD (NPI 1891954491) is an individual infectious disease provider in Chicago, Illinois, licensed in Illinois (036-121127) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Rush University Medical Center, and is a graduate of Rush Medical College Of Rush University (2004).

NPPES Registry Identity

NPI1891954491

Entity TypeIndividualFemale

Primary Taxonomy207RI0200X

Provider Legal NameMARIAM S AZIZCredential: MD

Location Address600 S PAULINA ST, SUITE 140Chicago, IL 60612-3806

Mailing Address600 S Paulina St, Suite 140aacChicago, IL 60612-3806 · (312) 942-5865

Phone(312) 942-5865

Fax(312) 942-2184

Sole ProprietorNo

Medical School CMSRush Medical College Of Rush UniversityGraduated 2004

Enumeration DateJune 9, 2008

Last NPPES UpdateApril 21, 2021

NPPES CertifiedApril 21, 2021

✔ NPI 1891954491 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in IL · 036-121127

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedInternal MedicineTaxonomy 207R00000X · License 125047355 (IL)

Also ListedPediatricsTaxonomy 208000000X · License 125047355 (IL)

600 S PAULINA ST, Chicago, IL 60612

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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

Mariam S Aziz Md 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.

PECOS PAC ID941334445

PECOS Enrollment IDI20100819000680

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mariam Aziz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rush University Medical Group

0.1 mi

Internal Medicine

1620 W HARRISON ST
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
2,169 clinicians in this Medicare group

NPI 1093819542 (312) 942-5000

Cook County

0.2 mi

Family Medicine

605 S WOLCOTT AVE, SUITE 605
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
1,047 clinicians in this Medicare group

NPI 1912063439 (312) 864-4649

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

62 services38 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

45 services42 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

38 services22 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

21 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Rush University Medical Center

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140119

Location1653 West Congress ParkwayChicago, IL 60612 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. JOSEPH ROBERT KREBS MD

Surgery