DR. ZAHER QASSEM MD
NPI 1366551996
Internal Medicine - Pulmonary Disease in Rockford, IL

Q: What is Zaher Qassem's NPI number?

The NPI number for Zaher Qassem is 1366551996. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Q: What is Zaher Qassem's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Zaher Qassem was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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 August 29, 2006PECOS EnrolledAccepts Medicare Assignment

2350 N ROCKTON AVE, ROCKFORD, IL 61103(815) 971-2015(815) 971-9581 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 17, 2026, Aug 31, 2020 (2 updates tracked since 2020).

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About Dr. Zaher Qassem Md NPPES

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

DR. ZAHER QASSEM MD (NPI 1366551996) is an individual pulmonary disease provider in Rockford, Illinois, licensed in Illinois (036125221) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Cgh Medical Center, and maintains a secondary practice location in Freeport.

NPPES Registry Identity

NPI1366551996

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. ZAHER QASSEMCredential: MD

Location Address2350 N ROCKTON AVERockford, IL 61103-3600

Mailing Address2350 N Rockton AveRockford, IL 61103-3600 · (815) 971-2015 · Fax (815) 971-9581

Phone(815) 971-2015

Fax(815) 971-9581

Sole ProprietorNo

Medical School CMSOtherGraduated 1998

Enumeration DateAugust 29, 2006

Last NPPES UpdateJuly 17, 20262 updates tracked since enumeration

NPPES CertifiedJuly 17, 2026

✔ NPI 1366551996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in IL · 036125221

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036125221 (IL)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 036125221 (IL)

Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X · License 036125221 (IL)

2350 N ROCKTON AVE, Rockford, IL 61103

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Secondary Practice Location 1

Location 11045 W Stephenson StFreeport, IL 61032-4864 · Phone (815) 599-6000

Other Identifiers 3

Medicaid036125221IL

Medicaid051523281AL

Medicaid1366551996WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, MercyCare, MercyCare Health Plans.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

Dr. Zaher Qassem 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 ID7911976196

PECOS Enrollment IDI20101103000235

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 Zaher Qassem reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rockford Health Physicians

Same address

Anesthesiology

2400 N ROCKTON AVE
Rockford, IL 61103

Reassigned Medicare billing, Illinois enrollment
1,375 clinicians in this Medicare group

NPI 1023275278 (815) 971-5000

Freeport Regional Health Care Foundation

26 mi

Family Medicine

1036 W STEPHENSON ST
Freeport, IL 61032

Reassigned Medicare billing, Illinois enrollment
391 clinicians in this Medicare group

NPI 1457337016 (815) 599-6000

Freeport Memorial Hospital

27 mi

General Acute Care Hospital

1045 W STEPHENSON ST
Freeport, IL 61032

Reassigned Medicare billing, Illinois enrollment
478 clinicians in this Medicare group

NPI 1447228788 (815) 599-6000

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 23

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.

287 services104 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

227 services112 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.

162 services143 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

155 services149 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.

140 services118 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

75 services74 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

71 services69 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.

70 services66 patients

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

56 services44 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

53 services52 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.

48 services28 patients

Aspiration of initial secretion of lung airway using an endoscope 31645

This procedure involves using a thin, flexible tube called an endoscope to collect initial secretions from your lung airway. This helps doctors diagnose and treat respiratory conditions. It's a safe, minimally invasive procedure.

32 services25 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.

26 services26 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

26 services18 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

24 services23 patients

Test to measure expiratory airflow and volume 94010

20 services19 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.

19 services19 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

18 services18 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

16 services16 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

15 services14 patients

Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556

This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.

14 services14 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

12 services12 patients

Test to determine lung volumes using sensors 94726

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Cgh Medical Center

Acute Care Hospitals · Sterling, IL

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number140043

Location100 East Lefevre RoadSterling, IL 61081 · Whiteside County

Emergency services Birthing friendly

Fhn Memorial Hospital

Acute Care Hospitals · Freeport, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140160

Location1045 West Stephenson StreetFreeport, IL 61032 · Stephenson County

Emergency services Birthing friendly

Javon Bea Hospital

Acute Care Hospitals · Rockford, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140239

Location8201 E Riverside BlvdRockford, IL 61114 · Winnebago County

Emergency services Birthing friendly

Mercy Health System Corp

Acute Care Hospitals · Janesville, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520066

Location1000 Mineral Point AveJanesville, WI 53548 · Rock County

Emergency services Birthing friendly

Mercy Walworth Hospital & Medical Center

Critical Access Hospitals · Lake Geneva, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number521357

LocationN2950 State Road 67Lake Geneva, WI 53147 · Walworth County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61103 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

$127.46 typical visit price

range $54.80 – $168.44

Typical copayment $31.86 (range $13.70 – $42.11)

Most-billed visit code 99204

Established Patient

$97.25 typical visit price

range $17.16 – $136.56

Typical copayment $24.31 (range $4.29 – $34.14)

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.

Referred Medical Equipment & Supplies CMS DME claims 9

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

6 suppliers78 claims78 services$16.64 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

3 suppliers15 claims15 services$912.71 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

3 suppliers47 claims47 services$6.35 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

6 suppliers183 claims183 services$87.93 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

3 suppliers40 claims40 services$35.09 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

10 suppliers27 claims7,249 services$0.03 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

PRASAD K. KILARU MD

Internal Medicine (Cardiovascular Disease)

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-2000

JOHN T. DORSEY MD

Internal Medicine

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-7210

DR. MOHSIN KHAN MD

Psychiatry & Neurology (Neurology)

2350 N ROCKTON AVE, ROCKFORD HEALTH PHYSICIANS
ROCKFORD, IL 61103

Winnebago County (815) 971-7600

DR. DAVID M CHENG MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

2350 N ROCKTON AVE, RMB 1ST FLOOR
ROCKFORD, IL 61103

Winnebago County (815) 971-2485

SALLIE VAN DAELE NP

Nurse Practitioner (Adult Health)

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-2200

LEELA L NARRA MD

Internal Medicine (Cardiovascular Disease)

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-2000

MELISSA ALEXANDRA BACHMAN APRN

Nurse Practitioner (Gerontology)

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-3613

REBECCA ZIMMERMAN N.P.

Nurse Practitioner

2350 N ROCKTON AVE
ROCKFORD, IL 61103

Winnebago County (815) 971-2000

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 Zaher Qassem's NPI number?

The NPI number for Zaher Qassem is 1366551996. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Where is Zaher Qassem located?

Zaher Qassem practices at 2350 N Rockton Ave, Rockford, IL 61103. The listed phone number is (815) 971-2015.

What is Zaher Qassem's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Zaher Qassem enrolled in Medicare?

Yes. Zaher Qassem 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 Zaher Qassem's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zaher Qassem reassigns Medicare benefits to 3 organizations: Rockford Health Physicians (Rockford, IL), Freeport Regional Health Care Foundation (Freeport, IL) and Freeport Memorial Hospital (Freeport, 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 Zaher Qassem's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zaher Qassem accept?

Health plans from Anthem Blue Cross and Blue Shield, MercyCare and MercyCare Health Plans list Zaher Qassem 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 Zaher Qassem affiliated with any hospitals?

According to CMS data, Zaher Qassem is affiliated with Cgh Medical Center, Fhn Memorial Hospital, Javon Bea Hospital, Mercy Health System Corp and Mercy Walworth Hospital & Medical Center.

When was this NPI record last updated?

The NPPES record for Zaher Qassem was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.