MARK B SAKER MD
NPI 1881783140
Radiology - Diagnostic Radiology in Chicago, IL

Q: What is Mark Saker's NPI number?

The NPI number for Mark Saker is 1881783140. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Q: What is Mark Saker's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Mark Saker was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 October 12, 2006PECOS EnrolledAccepts Medicare Assignment

836 W WELLINGTON AVE, CHICAGO, IL 60657(773) 296-7820(773) 296-7821 Get Directions Write a Review

NPPES record last updated: March 5, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 5, 2026, Dec 28, 2021 (2 updates tracked since 2021).

On this page

About Mark B Saker Md NPPES

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

MARK B SAKER MD (NPI 1881783140) is an individual diagnostic radiology provider in Chicago, Illinois, licensed in Illinois (036090802) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and is a graduate of Other (1988).

NPPES Registry Identity

NPI1881783140

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameMARK B SAKERCredential: MD

Location Address836 W WELLINGTON AVEChicago, IL 60657

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900 · Fax (847) 390-4757

Phone(773) 296-7820

Fax(773) 296-7821

Sole ProprietorNo

Medical School CMSOtherGraduated 1988

Enumeration DateOctober 12, 2006

Last NPPES UpdateMarch 5, 20262 updates tracked since enumeration

NPPES CertifiedMarch 5, 2026

✔ NPI 1881783140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in IL · 036090802

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

836 W WELLINGTON AVE, Chicago, IL 60657

Open in Google Maps ↗

Other Identifiers 1

Medicaid036090802IL

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

Mark B Saker 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 ID5890739569

PECOS Enrollment IDI20050614000322

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

Advocate Health And Hospitals Corp.

1.0 mi

Cardiovascular Disease

3118 N ASHLAND AVE
Chicago, IL 60657

Reassigned Medicare billing, Illinois enrollment
4,870 clinicians in this Medicare group

NPI 1487951711 (773) 880-9722

Integrated Imaging Consultants LLC

12 mi

Diagnostic Radiology

1775 DEMPSTER ST
Park Ridge, IL 60068

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

NPI 1700285335 (847) 803-1000

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 47

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.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

1,503 services1,125 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

513 services475 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

294 services285 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

238 services225 patients

X-ray of chest, 2 views 71046

185 services182 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

184 services178 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

163 services161 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

159 services156 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

136 services134 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

117 services114 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

80 services78 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

70 services55 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

65 services64 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

62 services59 patients

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

61 services59 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

58 services58 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

57 services57 patients

Low dose ct scan of chest for lung cancer screening 71271

A low-dose CT scan of the chest is a quick, painless procedure that uses a small amount of radiation to create detailed images of your lungs. It's a key tool for early detection of lung cancer, especially for those at high risk.

53 services53 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

53 services46 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

47 services45 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

37 services34 patients

3d radiographic procedure 76376

37 services36 patients

Ct scan of chest without contrast 71250

36 services35 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

35 services34 patients

Low dose ct scan of chest for lung cancer screening 71271

34 services34 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

29 services29 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

29 services28 patients

X-ray of knee, 3 views 73562

27 services26 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

27 services26 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

25 services24 patients

Ct scan of chest with contrast 71260

24 services24 patients

X-ray of shoulder, minimum of 2 views 73030

24 services21 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

24 services22 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

21 services21 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

20 services20 patients

X-ray of lower and sacral spine, 2-3 views 72100

20 services20 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

19 services17 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

19 services19 patients

Ct scan of face without contrast 70486

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

18 services17 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

17 services17 patients

X-ray of ribs on side of body, minimum of 3 views 71101

16 services16 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

16 services13 patients

X-ray of foot, minimum of 3 views 73630

16 services13 patients

Ct scan of abdomen and pelvis with contrast 74177

16 services16 patients

X-ray of hip, 2-3 views 73502

13 services13 patients

X-ray of ankle, minimum of 3 views 73610

12 services11 patients

Ct scan of heart structure with contrast 75572

A CT scan of the heart with contrast is a non-invasive test. A dye is injected into your veins, which helps to highlight heart structures in the images. The CT scanner uses X-rays to create detailed pictures of your heart, aiding in diagnosis.

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.

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140116

Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County

Emergency services Birthing friendly

Advocate Illinois Masonic Medical Center

Acute Care Hospitals · Chicago, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140182

Location836 West Wellington AvenueChicago, IL 60657 · Cook County

Emergency services Birthing friendly

Community First Medical Center

Acute Care Hospitals · Chicago, IL

1/5 CMS rating

OwnershipProprietary

CMS Certification Number140251

Location5645 W Addison StreetChicago, IL 60634 · Cook County

Emergency services

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

Advocate Good Shepherd Hospital

Acute Care Hospitals · Barrington, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140291

Location450 West Highway 22Barrington, IL 60010 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60657 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

$94.06 typical visit price

range $60.08 – $183.39

Typical copayment $23.51 (range $15.02 – $45.84)

Most-billed visit code 99203

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

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. ROBERT R TURELLI JR. MD

Emergency Medicine

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-5878

JAYME L. CAPPA

Speech-Language Pathologist

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-7988

DR. CHIMUANYA OKOLI MD

Internal Medicine (Sleep Medicine)

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-5424

DEBRA FARIDA

Nurse Anesthetist, Certified Registered

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 975-1600

MALIK SAHOURI DO

Anesthesiology

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-5187

SERGIO GUTIERREZ NUNEZ MD

Anesthesiology

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-5187

MS. NOREEN MARIE SHERIDAN RD. LDN,CDE

Dietitian, Registered

836 W WELLINGTON AVE, FOOD AND NUTRITION DEPT.
CHICAGO, IL 60657

Cook County (773) 296-5912

ANN M HARVEY APN, CNP

Nurse Practitioner

836 W WELLINGTON AVE
CHICAGO, IL 60657

Cook County (773) 296-3646

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 Mark Saker's NPI number?

The NPI number for Mark Saker is 1881783140. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is Mark Saker located?

Mark Saker practices at 836 W Wellington Ave, Chicago, IL 60657. The listed phone number is (773) 296-7820.

What is Mark Saker's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Mark Saker enrolled in Medicare?

Yes. Mark Saker 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 Mark Saker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Saker reassigns Medicare benefits to 2 organizations: Advocate Health And Hospitals Corp. (Chicago, IL) and Integrated Imaging Consultants LLC (Park Ridge, 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 Mark Saker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mark Saker affiliated with any hospitals?

According to CMS data, Mark Saker is affiliated with Northwestern Medicine Mchenry, Advocate Illinois Masonic Medical Center, Community First Medical Center, Northwest Community Hospital 1 and Advocate Good Shepherd Hospital.

When was this NPI record last updated?

The NPPES record for Mark Saker was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.