DR. SENG H ONG MD
NPI 1861441693
Radiology - Diagnostic Radiology in Chicago, IL
About Dr. Seng H Ong Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SENG H ONG MD (NPI 1861441693) is an individual diagnostic radiology provider in Chicago, Illinois, licensed in Illinois (036124146) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Crown Point, and is a graduate of Other (1995).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Seng H Ong 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
3Medicare enrollment records show Seng Ong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois and Indiana enrollments
- Also billed through NPI 1477262046 (Illinois)
- 2,237 clinicians in this Medicare group
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware and Florida enrollments
- Also billed through NPI 1265585806 (Florida)
- 526 clinicians in this Medicare group
Deptford, NJ 08096
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: Nemours New Jersey Physician Practice PC
- 183 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 60637 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60637
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 Seng Ong's NPI number?
The NPI number for Seng Ong is 1861441693. It was assigned to this individual provider in the NPPES registry on May 9, 2006.
Where is Seng Ong located?
Seng Ong practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (773) 702-1000.
What is Seng Ong's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Seng Ong enrolled in Medicare?
Yes. Seng Ong 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 Seng Ong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seng Ong reassigns Medicare benefits to 3 organizations: University Of Chicago (Chicago, IL), The Nemours Foundation (Wilmington, DE) and Nemours New Jersey Physician Practice, P.C. (Deptford, NJ). 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 Seng Ong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seng Ong accept?
Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama and Oscar Health list Seng Ong 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 Seng Ong was last updated on June 7, 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. Seng H Ong, MD · NPI 1861441693
Diagnostic Radiology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since May 9, 2006.
## Identity
- **NPI:** 1861441693 (Entity type: Individual)
- **Enumerated:** May 9, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 036124146 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 5841 S MARYLAND AVE, Chicago, IL 60637-1443
- **Phone:** (773) 702-1000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of Chicago (NPI 1821048786, Chicago, IL); The Nemours Foundation (NPI 1366594699, Wilmington, DE); Nemours New Jersey Physician Practice, P.C. (NPI 1265874713, Deptford, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1995
## Record status
- **NPPES last updated:** June 7, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1861441693) · Data from the CMS NPPES public registry.