DR. MARIA J DOUROS DO
NPI 1700873106
Family Medicine in Westmont, IL
About Dr. Maria J Douros Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARIA J DOUROS DO (NPI 1700873106) is an individual family medicine provider in Westmont, Illinois, licensed in Illinois (036112744) and active in the NPI registry since September 2005. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Maria J Douros Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Maria Douros reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Downers Grove, IL 60515
- Reassigned Medicare billing, Illinois enrollment
- 1,061 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60559 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMONT, IL 60559
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 Maria Douros's NPI number?
The NPI number for Maria Douros is 1700873106. It was assigned to this individual provider in the NPPES registry on September 30, 2005.
Where is Maria Douros located?
Maria Douros practices at 801 N Cass Ave Ste 300, Westmont, IL 60559. The listed phone number is (630) 348-3840.
What is Maria Douros's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Maria Douros enrolled in Medicare?
Yes. Maria Douros is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Maria Douros's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maria Douros reassigns Medicare benefits to Dupage Medical Group Ltd (Downers Grove, IL). 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 Maria Douros's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Maria Douros was last updated on August 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.