1. Home
  2. Directory
  3. Illinois
  4. Buffalo Grove
  5. Internal Medicine
  6. NPI Profile

AMMARA AZIZ MD
NPI 1336407998
Internal Medicine - Endocrinology, Diabetes & Metabolism in Buffalo Grove, IL

Active since May 01, 2012PECOS EnrolledAccepts Medicare Assignment
89.66/100
CMS Quality Rating
15 S MCHENRY RD FL 3, BUFFALO GROVE, IL 60089(847) 618-0326(847) 618-0762 Get Directions Write a Review

NPPES record last updated: January 25, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 25, 2023, Jan 9, 2023, May 16, 2022 and 3 more (6 updates tracked since 2016).

About Ammara Aziz Md NPPES

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

AMMARA AZIZ MD (NPI 1336407998) is an individual endocrinology, diabetes & metabolism provider in Buffalo Grove, Illinois, licensed in Illinois (036154001) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, is affiliated with Northwest Community Hospital 1, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1336407998
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameAMMARA AZIZCredential: MD
Location Address15 S MCHENRY RD FL 3Buffalo Grove, IL 60089-6705
Mailing Address15 S Mchenry Rd Fl 3Buffalo Grove, IL 60089-6705 · (847) 618-0326 · Fax (847) 618-0762
Phone(847) 618-0326
Fax(847) 618-0762
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateMay 1, 2012
Last NPPES UpdateJanuary 25, 20236 updates tracked since enumeration
NPPES CertifiedJanuary 25, 2023
✔ NPI 1336407998 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Licenses✔ Licensed in IL · 036154001✔ Licensed in IN · 01077435A✔ Licensed in OK · 30661
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License 57461-20 (WI), 125056074 (IL)
15 S MCHENRY RD FL 3, Buffalo Grove, IL 60089
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1201 Pennsylvania Pkwy, Ste 310Indianapolis, IN 46280-1393 · Phone (317) 944-8660 · Fax (317) 944-1289
Location 27 Blanchard Cir Ste 202Wheaton, IL 60189-2039 · Phone (630) 208-6775 · Fax (630) 208-7937

Other Identifiers 2

Medicaid201387380IN
Other036154001IL · State License

Accepted Insurance

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

Ammara 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 ID4284886797
PECOS Enrollment IDI20200922001334
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

4

Medicare enrollment records show Ammara Aziz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwest Community Health Services Inc
5.5 mi
Internal Medicine
3040 W SALT CREEK LN
Arlington Heights, IL 60005
  • Reassigned Medicare billing, Illinois enrollment
  • 346 clinicians in this Medicare group
NPI 1134433154 (847) 618-3481
Endeavor Health Medical Group
15 mi
Anesthesiology
2650 RIDGE AVE, ANESTHESIOLOGY ROOM 3905
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1265695944 (847) 570-2760
Dupage Medical Group Ltd
22 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 1,061 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200
Central Dupage Physician Group
23 mi
Family Medicine
5777 DEPARTMENT
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 1,664 clinicians in this Medicare group
NPI 1033149844 (630) 933-3300

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 7

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.

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.
285 services123 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
143 services65 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
83 services83 patients
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251
This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.
82 services34 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
44 services39 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
20 services19 patients

Hospital Affiliations CMS Care Compare

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

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140252
Location800 W Central RoadArlington Heights, IL 60005 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60089 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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.

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.

89.66/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality79.32
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers36 claims40 services$198.99 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Ammara Aziz's NPI number?

The NPI number for Ammara Aziz is 1336407998. It was assigned to this individual provider in the NPPES registry on May 1, 2012.

Where is Ammara Aziz located?

Ammara Aziz practices at 15 S Mchenry Rd Fl 3, Buffalo Grove, IL 60089. The listed phone number is (847) 618-0326.

What is Ammara Aziz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Ammara Aziz enrolled in Medicare?

Yes. Ammara Aziz 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 Ammara Aziz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ammara Aziz reassigns Medicare benefits to 4 organizations: Northwest Community Health Services Inc (Arlington Heights, IL), Endeavor Health Medical Group (Evanston, IL), Dupage Medical Group Ltd (Downers Grove, IL) and Central Dupage Physician Group (Carol Stream, IL). 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 Ammara Aziz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ammara Aziz accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Ammara Aziz 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 Ammara Aziz affiliated with any hospitals?

According to CMS data, Ammara Aziz is affiliated with Northwest Community Hospital 1.

When was this NPI record last updated?

The NPPES record for Ammara Aziz was last updated on January 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.