DAVID STEWART M.D.
NPI 1700042389
Internal Medicine - Interventional Cardiology in Chicago, IL
About David Stewart M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID STEWART M.D. (NPI 1700042389) is an individual interventional cardiology provider in Chicago, Illinois, licensed in Indiana (01075745B) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with St Catherine Hospital Inc, and maintains a secondary practice location in Munster.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Accepted 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
David Stewart 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.
Medicare Billing Reassignments
2Medicare enrollment records show David Stewart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
St John, IN 46373
- Reassigned Medicare billing, Indiana enrollment
- 607 clinicians in this Medicare group
Mishawaka, IN 46544
- Reassigned Medicare billing, Indiana enrollment
- 1,396 clinicians in this Medicare group
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 37
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Catherine Hospital Inc
Acute Care Hospitals · East Chicago, INFranciscan Health Dyer
Acute Care Hospitals · Dyer, INCommunity Hospital
Acute Care Hospitals · Munster, INFranciscan Health Crown Point
Acute Care Hospitals · Crown Point, INFranciscan Health Munster
Acute Care Hospitals · Munster, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
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 David Stewart's NPI number?
The NPI number for David Stewart is 1700042389. It was assigned to this individual provider in the NPPES registry on August 1, 2008.
Where is David Stewart located?
David Stewart practices at 1653 W Congress Pkwy, Chicago, IL 60612. The listed phone number is (312) 942-5352.
What is David Stewart's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is David Stewart enrolled in Medicare?
Yes. David Stewart 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 David Stewart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Stewart reassigns Medicare benefits to 2 organizations: Community Care Network Inc (St John, IN) and Franciscan Physician Network (Mishawaka, IN). 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 David Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Stewart accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list David Stewart 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 David Stewart affiliated with any hospitals?
According to CMS data, David Stewart is affiliated with St Catherine Hospital Inc, Franciscan Health Dyer, Community Hospital, Franciscan Health Crown Point and Franciscan Health Munster.
When was this NPI record last updated?
The NPPES record for David Stewart was last updated on April 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.