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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHAEL KERT ZIJLSTRA DO
NPI 1689169591
Internal Medicine - Gastroenterology in Hazel Crest, IL

Active since June 25, 2018PECOS EnrolledAccepts Medicare Assignment
17850 KEDZIE AVE STE 3500, HAZEL CREST, IL 60429(708) 957-4011(708) 957-4013 Get Directions Write a Review

NPPES record last updated: October 8, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 8, 2026, Jun 23, 2025, Jun 11, 2021 and 1 more (4 updates tracked since 2018).

About Michael Kert Zijlstra Do NPPES

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

MICHAEL KERT ZIJLSTRA DO (NPI 1689169591) is an individual gastroenterology provider in Hazel Crest, Illinois, licensed in Illinois (036155770) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS, is affiliated with Medical College Of Virginia Hospitals, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1689169591
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMICHAEL KERT ZIJLSTRACredential: DO
Location Address17850 KEDZIE AVE STE 3500Hazel Crest, IL 60429-2082
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900 · Fax (847) 390-4757
Phone(708) 957-4011
Fax(708) 957-4013
Sole ProprietorYes
Medical School CMSChicago College Of OsteopathyGraduated 2018
Enumeration DateJune 25, 2018
Last NPPES UpdateOctober 8, 20264 updates tracked since enumeration
NPPES CertifiedOctober 8, 2026
✔ NPI 1689169591 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in IL · 036155770✔ Licensed in MI · 1689169591
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125.072046 (IL)
17850 KEDZIE AVE STE 3500, Hazel Crest, IL 60429
Open in Google Maps ↗

Secondary Practice Locations 3

Location 12650 Ridge Ave. Suite 5323, Office of the Chief ResidentEvanston, IL 60201-6686 · Phone (847) 570-2505 · Fax (847) 570-2905
Location 21001 E Leigh St Fl 11Richmond, VA 23298-5004 · Phone (804) 828-2161 · Fax (804) 828-5348
Location 3NorthShore University HealthSystem Office of Academic, Affairs 2650 Ridge Ave, Suite 1304Evanston, IL 60201 · Phone (847) 570-2000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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

Michael Kert Zijlstra Do 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 ID6204185515
PECOS Enrollment IDI20260219000635
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 Reassignment

Medicare enrollment records show Michael Zijlstra reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mcv Associated Physicians
614 mi
Anesthesiology
1250 E MARSHALL ST, MAIN 1-214, BOX 980510
Richmond, VA 23298
  • Reassigned Medicare billing, Virginia enrollment
  • 2,481 clinicians in this Medicare group
NPI 1710959457 (804) 828-8707

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Medical College Of Virginia Hospitals

Acute Care Hospitals · Richmond, VA
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number490032
LocationPost Office Box 980510 1250 East Marshall StreetRichmond, VA 23298 · Richmond City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60429 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DAANISH SIDDIQUE
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 957-4011
LANXIN LI
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 957-4011
ALLAN RUBY M.D.
Obstetrics & Gynecology
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 575-4415
SATYA M MISHRA MD
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 957-4011
DR. MARJORIE GINOU MICHEL M.D.
Obstetrics & Gynecology
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 575-4415
DR. VICTOR NNADOZIE UDECHUKWU M.D
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 3500
HAZEL CREST, IL 60429
Cook County (708) 957-4011

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 Michael Zijlstra's NPI number?

The NPI number for Michael Zijlstra is 1689169591. It was assigned to this individual provider in the NPPES registry on June 25, 2018.

Where is Michael Zijlstra located?

Michael Zijlstra practices at 17850 Kedzie Ave Ste 3500, Hazel Crest, IL 60429. The listed phone number is (708) 957-4011.

What is Michael Zijlstra's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Michael Zijlstra enrolled in Medicare?

Yes. Michael Zijlstra 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 organization bills Medicare for Michael Zijlstra's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Zijlstra reassigns Medicare benefits to Mcv Associated Physicians (Richmond, VA). The 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 Michael Zijlstra's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Zijlstra accept?

Health plans from Oscar Health list Michael Zijlstra 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 Michael Zijlstra affiliated with any hospitals?

According to CMS data, Michael Zijlstra is affiliated with Medical College Of Virginia Hospitals.

When was this NPI record last updated?

The NPPES record for Michael Zijlstra was last updated on October 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.