GHASSAN ZALZALEH MD
NPI 1992704035
Internal Medicine - Hematology & Oncology in Oak Lawn, IL

Active since July 20, 2005PECOS EnrolledAccepts Medicare Assignment
4400 W 95TH ST, SUITE 311, OAK LAWN, IL 60453(708) 424-9710(708) 424-4331 Get Directions Write a Review

NPPES record last updated: July 10, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ghassan Zalzaleh Md NPPES

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

GHASSAN ZALZALEH MD (NPI 1992704035) is an individual hematology & oncology provider in Oak Lawn, Illinois, licensed in Illinois (036089713) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1992704035
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameGHASSAN ZALZALEHCredential: MD
Location Address4400 W 95TH ST, SUITE 311Oak Lawn, IL 60453-2654
Mailing Address62647 Collection Center DrChicago, IL 60693-0626 · (815) 895-2144 · Fax (630) 789-1432
Fax(708) 424-4331
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateJuly 20, 2005
Last NPPES UpdateJuly 10, 2015
NPI 1992704035 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in IL · 036089713
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
4400 W 95TH ST, Oak Lawn, IL 60453

Other Identifiers 2

Medicare UPINI16874
Medicare ID-Type UnspecifiedK13239

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ghassan Zalzaleh 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 ID7517936099
PECOS Enrollment IDI20040930000994
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.

Areas of Expertise CMS Part B claims 56

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.

Injection, ferric carboxymaltose, 1 mg J1439
Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.
27,750 services24 patients
Injection, pembrolizumab, 1 mg J9271
Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.
27,600 services29 patients
Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881
Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.
21,780 services18 patients
Injection, nivolumab, 1 mg J9299
Nivolumab is a medication given via injection, often used in cancer treatment. It works by helping your immune system fight the cancer cells. The dosage is measured in milligrams (mg), with 1 mg being a common dose.
9,260 services11 patients
Injection, paclitaxel, 1 mg J9267
Paclitaxel is a medication administered via injection to treat various types of cancer. It works by inhibiting cell division, thus preventing cancer cells from growing and multiplying. Each dose is tailored to the patient's body size.
6,205 services16 patients
Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
4,500 services21 patients

Hospital Affiliations CMS Care Compare 5

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

Advocate Trinity Hospital

Acute Care Hospitals · Chicago, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140048
Location2320 E 93rd StChicago, IL 60617 · Cook County
Emergency services Birthing friendly

Palos Community Hospital

Acute Care Hospitals · Palos Heights, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140062
Location12251 South 80th AvenuePalos Heights, IL 60463 · Cook County
Emergency services Birthing friendly

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140208
Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County
Emergency services Birthing friendly

Silver Cross Hospital And Medical Centers

Acute Care Hospitals · New Lenox, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140213
Location1900 Silver Cross BlvdNew Lenox, IL 60451 · Will County
Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 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
$183.39 typical visit price
range $60.08 – $183.39
Typical copayment $45.84 (range $15.02 – $45.84)
Most-billed visit code 99205
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.

Referred Medical Equipment & Supplies CMS DME claims 3

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

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier40 claims1,904 services$0.71 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
1 supplier28 claims28 services$18.28 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
1 supplier18 claims18 services$12.66 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.

Internal Medicine
4400 W 95TH ST, SUITE 311
OAK LAWN, IL 60453
Genetic Counselor, MS
4400 W 95TH ST, PHYSICIANS' PAVILLION SUITE 207
OAK LAWN, IL 60453
Physician Assistant (Surgical)
4400 W 95TH ST, SUITE 205
OAK LAWN, IL 60453
Physician Assistant
4400 W 95TH ST, SUITE 205
OAK LAWN, IL 60453
Clinic/Center
4400 W 95TH ST, SUITE 405
OAK LAWN, IL 60453
Psychologist
4400 W 95TH ST
OAK LAWN, IL 60453
Obstetrics & Gynecology
4400 W 95TH ST, STE 403
OAK LAWN, IL 60453
Thoracic Surgery (Cardiothoracic Vascular Surgery)
4400 W 95TH ST, STE 205
OAK LAWN, IL 60453

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 Ghassan Zalzaleh's NPI number?

The NPI number for Ghassan Zalzaleh is 1992704035. It was assigned to this individual provider in the NPPES registry on July 20, 2005.

Where is Ghassan Zalzaleh located?

Ghassan Zalzaleh practices at 4400 W 95th St Suite 311, Oak Lawn, IL 60453. The listed phone number is (708) 424-9710.

What is Ghassan Zalzaleh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Ghassan Zalzaleh enrolled in Medicare?

Yes. Ghassan Zalzaleh 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.

What insurance does Ghassan Zalzaleh accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Ghassan Zalzaleh 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 Ghassan Zalzaleh affiliated with any hospitals?

According to CMS data, Ghassan Zalzaleh is affiliated with Advocate Trinity Hospital, Palos Community Hospital, Advocate Christ Hospital & Medical Center, Silver Cross Hospital And Medical Centers and Northwestern Medicine Central Dupage Hospital.

When was this NPI record last updated?

The NPPES record for Ghassan Zalzaleh was last updated on July 10, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.