STEPHEN D DEFRIEZ D.O.
NPI 1639111966
Radiology - Diagnostic Radiology in Flint, MI
About Stephen D Defriez D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN D DEFRIEZ D.O. (NPI 1639111966) is an individual diagnostic radiology provider in Flint, Michigan, licensed in Michigan (5101014531) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Concord Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Stephen D Defriez 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
31Medicare enrollment records show Stephen Defriez reassigns Medicare billing to 31 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, IN 47201
- Reassigned Medicare billing, Michigan and Utah enrollments
- 4 clinicians in this Medicare group
Winchester, VA 22601
- Reassigned Medicare billing, Michigan and Utah enrollments
- 3 clinicians in this Medicare group
Pearisburg, VA 24134
- Reassigned Medicare billing, Utah and Virginia enrollments
- Also billed through NPI 1023663267 (Virginia)
- 4 clinicians in this Medicare group
Tazewell, VA 24651
- Reassigned Medicare billing, Utah enrollment
- 4 clinicians in this Medicare group
Lexington, VA 24450
- Reassigned Medicare billing, Virginia and Utah enrollments
- Also billed through NPI 1174636021 (Utah)
- 208 clinicians in this Medicare group
Roanoke, VA 24014
- Reassigned Medicare billing, Utah enrollment
- 4 clinicians in this Medicare group
Lynchburg, VA 24503
- Reassigned Medicare billing, Utah enrollment
- 5 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Utah enrollment
- 3 clinicians in this Medicare group
Knoxville, TN 37919
- Reassigned Medicare billing, Utah enrollment
- 4 clinicians in this Medicare group
Winston Salem, NC 27157
- Reassigned Medicare billing, Utah enrollment
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 49
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.
Concord Hospital
Acute Care Hospitals · Concord, NHAtrium Health Cleveland
Acute Care Hospitals · Shelby, NCCentra Health - Lynchburg Gen Hospital
Acute Care Hospitals · Lynchburg, VACarilion Medical Center
Acute Care Hospitals · Roanoke, VACarilion New River Valley Medical Center
Acute Care Hospitals · Christiansburg, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48532 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FLINT, MI 48532
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 Stephen Defriez's NPI number?
The NPI number for Stephen Defriez is 1639111966. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is Stephen Defriez located?
Stephen Defriez practices at 501 S Ballenger Hwy Suite B, Flint, MI 48532. The listed phone number is (810) 342-4800.
What is Stephen Defriez's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Stephen Defriez enrolled in Medicare?
Yes. Stephen Defriez 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 Stephen Defriez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Defriez reassigns Medicare benefits to 31 organizations: Columbus Radiology Physicians LLC (Columbus, IN), Winchester Radiologists PC (Winchester, VA), Carilion Giles Community Hospital (Pearisburg, VA), Carilion Tazewell Community Hospital (Tazewell, VA), Carilion Rockbridge Community Hospital (Lexington, VA) and 26 more organizations, 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 Stephen Defriez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Defriez accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross Blue Shield of Arizona, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of NC and Blue Cross and Blue Shield of Texas and 6 other insurers list Stephen Defriez 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 Stephen Defriez affiliated with any hospitals?
According to CMS data, Stephen Defriez is affiliated with Concord Hospital, Atrium Health Cleveland, Centra Health - Lynchburg Gen Hospital, Carilion Medical Center and Carilion New River Valley Medical Center.
When was this NPI record last updated?
The NPPES record for Stephen Defriez was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days 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.
# Stephen D Defriez, D.O. · NPI 1639111966
Diagnostic Radiology physician in Flint, Michigan. Individual provider, active in the CMS NPPES registry since June 12, 2006.
## Identity
- **NPI:** 1639111966 (Entity type: Individual)
- **Enumerated:** June 12, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 5101014531 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 501 S BALLENGER HWY, SUITE B, Flint, MI 48532-3641
- **Phone:** (810) 342-4800
## 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:** 31 organizations under Medicare reassignment (form CMS-855R): Columbus Radiology Physicians LLC (NPI 1467964718, Columbus, IN); Winchester Radiologists PC (NPI 1235123977, Winchester, VA); Carilion Giles Community Hospital (NPI 1194718304, Pearisburg, VA); Carilion Tazewell Community Hospital (NPI 1427040328, Tazewell, VA); Carilion Rockbridge Community Hospital (NPI 1942854427, Lexington, VA); and 26 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** October 6, 2026
- **Other identifiers:** Medicaid 4767650 (MI); Other 300B560780 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1639111966) · Data from the CMS NPPES public registry.