DR. ISIS M DURAN MD
NPI 1891943619
Internal Medicine - Critical Care Medicine in Oak Lawn, IL
About Dr. Isis M Duran Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ISIS M DURAN MD (NPI 1891943619) is an individual critical care medicine provider in Oak Lawn, Illinois, licensed in Illinois (036123529) and active in the NPI registry since September 2008. She is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and maintains a secondary practice location in Winfield.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Location 1
Other Identifiers 5
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
Dr. Isis M Duran 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.
Medicare Billing Reassignments
2Medicare enrollment records show Isis Duran reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- Also billed through NPI 1629441027 (Illinois)
- 4,870 clinicians in this Medicare group
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 1,664 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 2
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILPhysician 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.
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.
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 Isis Duran's NPI number?
The NPI number for Isis Duran is 1891943619. It was assigned to this individual provider in the NPPES registry on September 4, 2008. The provider is also known as Isis Hijaz.
Where is Isis Duran located?
Isis Duran practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 283-5500.
What is Isis Duran's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Isis Duran enrolled in Medicare?
Yes. Isis Duran 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 Isis Duran's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isis Duran reassigns Medicare benefits to 2 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL) and Central Dupage Physician Group (Carol Stream, 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 Isis Duran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isis Duran accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Isis Duran 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 Isis Duran affiliated with any hospitals?
According to CMS data, Isis Duran is affiliated with Advocate Christ Hospital & Medical Center.
When was this NPI record last updated?
The NPPES record for Isis Duran was last updated on October 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Isis M Duran, MD · NPI 1891943619
Critical Care Medicine physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since September 4, 2008.
## Identity
- **NPI:** 1891943619 (Entity type: Individual)
- **Enumerated:** September 4, 2008
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 036123529 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4440 W 95TH ST, Oak Lawn, IL 60453-2600
- **Phone:** (708) 283-5500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL); Central Dupage Physician Group (NPI 1033149844, Carol Stream, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2005
## Record status
- **NPPES last updated:** October 23, 2024
- **Other identifiers:** Other 036123529 (IL); Medicaid 036123529 (IL); Other 206147 (IL); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1891943619) · Data from the CMS NPPES public registry.