Stephen Defriez, D.O.
NPI 1639111966 · Diagnostic Radiology Physician · Flint, MI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Defriez, D.O. is a Diagnostic Radiology Physician provider in Flint, MI (NPI 1639111966).
Provider details
- NPI number
- 1639111966
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 0102207752 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
3,131 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 717 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 433 | $39 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 197 | $86 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 143 | $83 |
| Ct Scan of Upper Spine Without Contrast72125 | 137 | $47 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 133 | $86 |
Practice location
Mailing address
Additional practice locations (1)
- 2239 Lost Oak CtGrand Blanc, MI 48439-2523Phone: (810) 348-7604
Registry dates
- Enumerated
- 2006-06-12
- Last updated
- 2023-08-08
- Certified
- 2023-08-08
Frequently asked questions
- What is Stephen Defriez's NPI number?
- Stephen Defriez's National Provider Identifier (NPI) is 1639111966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Defriez's specialty?
- Stephen Defriez is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Defriez located?
- Stephen Defriez's practice location on file with NPPES is 501 S Ballenger Hwy, Flint, MI 48532-3641.
- What is Stephen Defriez's phone number?
- The practice phone number listed in the NPPES registry for Stephen Defriez is (810) 342-4800.
- Does Stephen Defriez accept Medicare?
- Stephen Defriez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Defriez's NPI active?
- Yes — Stephen Defriez's NPI (1639111966) is active in the NPPES registry as of the last update on 2023-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.