DR. MARIUS DORIN GRADIANU D.O.
NPI 1144665878
Ophthalmology in Elmhurst, IL
About Dr. Marius Dorin Gradianu D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARIUS DORIN GRADIANU D.O. (NPI 1144665878) is an individual ophthalmology provider in Elmhurst, Illinois, licensed in Illinois (036154553) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Kansas City University Of Med & Biosciences, College Of Osteo Med (2013).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 2
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. Marius Dorin Gradianu 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 Reassignment
Medicare enrollment records show Marius Gradianu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Elmhurst, IL 60126
- Reassigned Medicare billing, Illinois enrollment
- 10 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 15
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60126 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.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ELMHURST, IL 60126
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 Marius Gradianu's NPI number?
The NPI number for Marius Gradianu is 1144665878. It was assigned to this individual provider in the NPPES registry on May 8, 2013.
Where is Marius Gradianu located?
Marius Gradianu practices at 152 N Addison Ave, Elmhurst, IL 60126. The listed phone number is (630) 833-9621.
What is Marius Gradianu's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Marius Gradianu enrolled in Medicare?
Yes. Marius Gradianu 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 Marius Gradianu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marius Gradianu reassigns Medicare benefits to Kovach Eye Institute, Ltd (Elmhurst, 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 Marius Gradianu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marius Gradianu accept?
Health plans from Oscar Health list Marius Gradianu 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.
When was this NPI record last updated?
The NPPES record for Marius Gradianu was last updated on May 18, 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.