DR. MAZEN KAWJI M.D.
NPI 1518915842
Internal Medicine - Cardiovascular Disease in New Lenox, IL

Q: What is Mazen Kawji's NPI number?

The NPI number for Mazen Kawji is 1518915842. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Q: What is Mazen Kawji's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Mazen Kawji was last updated on March 19, 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 May 05, 2006PECOS EnrolledAccepts Medicare Assignment

1890 SILVER CROSS BLVD, PAVILION A SUITE 240, NEW LENOX, IL 60451(815) 740-1900(815) 725-2413 Get Directions Write a Review

NPPES record last updated: March 19, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Mazen Kawji M.d. NPPES

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

DR. MAZEN KAWJI M.D. (NPI 1518915842) is an individual cardiovascular disease provider in New Lenox, Illinois, licensed in Illinois (036097964) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Saint Francis Medical Center, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1518915842

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. MAZEN KAWJICredential: M.D.

Location Address1890 SILVER CROSS BLVD, PAVILION A SUITE 240New Lenox, IL 60451-9524

Mailing Address1860 Payshere CircleChicago, IL 60674-0001 · (630) 469-9200

Phone(815) 740-1900

Fax(815) 725-2413

Sole ProprietorNo

Medical School CMSOtherGraduated 1987

Enumeration DateMay 5, 2006

Last NPPES UpdateMarch 19, 2021

NPPES CertifiedMarch 19, 2021

✔ NPI 1518915842 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in IL · 036097964

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

1890 SILVER CROSS BLVD, New Lenox, IL 60451

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Other Identifiers 1

Medicaid036097964IL

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

Dr. Mazen Kawji 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.

PECOS PAC ID7810988664

PECOS Enrollment IDI20040520000474

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 Mazen Kawji reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dupage Medical Group Ltd

20 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

Osf Multi-Specialty Group

102 mi

Internal Medicine

8600 N STATE ROUTE 91
Peoria, IL 61615

Reassigned Medicare billing, Illinois enrollment
2,944 clinicians in this Medicare group

NPI 1154908929 (309) 683-5050

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 22

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

1,153 services948 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.

498 services300 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

385 services382 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

204 services203 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

187 services185 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

111 services111 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.

97 services97 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

73 services73 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

73 services73 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

72 services72 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

47 services39 patients

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.

38 services28 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

36 services35 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

32 services31 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

25 services25 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

20 services20 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

18 services18 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.

18 services18 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

15 services15 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

13 services13 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

12 services12 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Saint Francis Medical Center

Acute Care Hospitals · Peoria, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140067

Location530 NE Glen Oak AvePeoria, IL 61637 · Peoria County

Emergency services Birthing friendly

Osf Saint Elizabeth Mdl Ctr

Acute Care Hospitals · Ottawa, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140110

Location1100 E Norris DriveOttawa, IL 61350 · La Salle County

Emergency services Birthing friendly

Saint Anthony Medical Center

Acute Care Hospitals · Rockford, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140233

Location5666 East State StreetRockford, IL 61108 · Winnebago County

Emergency services Birthing friendly

Osf Saint Paul Medical Center

Critical Access Hospitals · Mendota, IL

OwnershipVoluntary non-profit - Church

CMS Certification Number141310

Location1401 E 12th StreetMendota, IL 61342 · La Salle County

Emergency services

Osf Saint Clare Medical Center

Critical Access Hospitals · Princeton, IL

OwnershipGovernment - Local

CMS Certification Number141337

Location530 Park Avenue EastPrinceton, IL 61356 · Bureau County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60451 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

$74.38 typical visit price

range $19.15 – $147.12

Typical copayment $18.59 (range $4.78 – $36.78)

Most-billed visit code 99213

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. JOHN DONGAS M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

1890 SILVER CROSS BLVD, PAVILION A SUITE 240
NEW LENOX, IL 60451

Will County (815) 740-1900

CORINNE NAWROCKI D.O.

Family Medicine

1890 SILVER CROSS BLVD, SUITE 570
NEW LENOX, IL 60451

Will County (815) 463-3700

DR. JOSE ANTONIO PENAHERRERA M.D.

Internal Medicine

1890 SILVER CROSS BLVD, SUITE 265
NEW LENOX, IL 60451

Will County (815) 727-4292

MS. ELIZABETH MARIE DIBELLA PA-C

Physician Assistant

1890 SILVER CROSS BLVD
NEW LENOX, IL 60451

Will County (815) 723-4387

JULIA GRACE BANIA WHNP-BC

Nurse Practitioner (Women's Health)

1890 SILVER CROSS BLVD, #210
NEW LENOX, IL 60451

Will County (815) 463-3000

ZAFER JAWICH MD SC

Clinic/Center (Primary Care)

1890 SILVER CROSS BLVD, STE 350
NEW LENOX, IL 60451

Will County (815) 717-8737

KAREN JEAN KROOSWYK ARNP-ANP-BC

Nurse Practitioner (Adult Health)

1890 SILVER CROSS BLVD, STE 350
NEW LENOX, IL 60451

Will County (815) 714-8737

PROGRESSIVE SURGICAL ASSOCIATES SC

Surgery

1890 SILVER CROSS BLVD, SUITE 410
NEW LENOX, IL 60451

Will County (815) 717-8730

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 Mazen Kawji's NPI number?

The NPI number for Mazen Kawji is 1518915842. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Mazen Kawji located?

Mazen Kawji practices at 1890 Silver Cross Blvd Pavilion A Suite 240, New Lenox, IL 60451. The listed phone number is (815) 740-1900.

What is Mazen Kawji's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Mazen Kawji enrolled in Medicare?

Yes. Mazen Kawji 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 Mazen Kawji's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mazen Kawji reassigns Medicare benefits to 2 organizations: Dupage Medical Group Ltd (Downers Grove, IL) and Osf Multi-Specialty Group (Peoria, 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 Mazen Kawji's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mazen Kawji affiliated with any hospitals?

According to CMS data, Mazen Kawji is affiliated with Saint Francis Medical Center, Osf Saint Elizabeth Mdl Ctr, Saint Anthony Medical Center, Osf Saint Paul Medical Center and Osf Saint Clare Medical Center.

When was this NPI record last updated?

The NPPES record for Mazen Kawji was last updated on March 19, 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.