DR. JAMES GEORGE DELIS D.O.
NPI 1750393286
Family Medicine in Chicago, IL
About Dr. James George Delis D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES GEORGE DELIS D.O. (NPI 1750393286) is an individual family medicine provider in Chicago, Illinois, licensed in Illinois (036-091115) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Lake Forest Hospital, and is a graduate of Other (1992).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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. James George Delis D.o. 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
6Medicare enrollment records show James Delis reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60641
- Reassigned Medicare billing, Illinois enrollment
- 366 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
Arlington Heights, IL 60004
- Reassigned Medicare billing, Illinois enrollment
- 15 clinicians in this Medicare group
Carol Stream, IL 60188
- Reassigned Medicare billing, Illinois enrollment
- 12 clinicians in this Medicare group
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 clinicians in this Medicare group
Saint Charles, IL 60175
- Reassigned Medicare billing, Illinois enrollment
- 7 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 20
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.
Northwestern Lake Forest Hospital
Acute Care Hospitals · Lake Forest, ILElmhurst Memorial Hospital
Acute Care Hospitals · Elmhurst, ILNorthwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, ILNorthwest Community Hospital 1
Acute Care Hospitals · Arlington Heights, ILNorthwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
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 James Delis's NPI number?
The NPI number for James Delis is 1750393286. It was assigned to this individual provider in the NPPES registry on August 13, 2006.
Where is James Delis located?
James Delis practices at 635 N Fairbanks Ct, Chicago, IL 60611. The listed phone number is (312) 472-3173.
What is James Delis's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is James Delis enrolled in Medicare?
Yes. James Delis 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 James Delis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Delis reassigns Medicare benefits to 6 organizations: Physicians Immediate Care North Chicago LLC (Chicago, IL), Endeavor Health Medical Group (Evanston, IL), Ab Dermatology LLC (Arlington Heights, IL), Bodyworks Medical Center PLLC (Carol Stream, IL), Northwestern Medical Faculty Foundation (Carol Stream, IL) and 1 more organization, listed in the Medicare section above. 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 James Delis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Delis affiliated with any hospitals?
According to CMS data, James Delis is affiliated with Northwestern Lake Forest Hospital, Elmhurst Memorial Hospital, Northwestern Medicine Central Dupage Hospital, Northwest Community Hospital 1 and Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for James Delis was last updated on September 19, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.