Mark Southard, MD
NPI 1003868811 · Diagnostic Radiology Physician · Eau Claire, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Southard, MD is a Diagnostic Radiology Physician provider in Eau Claire, WI (NPI 1003868811).
Provider details
- NPI number
- 1003868811
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45008 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,719 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 | 412 | $8 |
| X-Ray of Chest, 2 Views71046 | 258 | $10 |
| Ct Scan Head Or Brain Without Contrast70450 | 187 | $38 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 170 | $84 |
| X-Ray of Chest, 2 Views71046 | 126 | $12 |
| Screening Mammography77067 | 91 | $33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2022-01-05
- Certified
- 2022-01-05
Frequently asked questions
- What is Mark Southard's NPI number?
- Mark Southard's National Provider Identifier (NPI) is 1003868811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Southard's specialty?
- Mark Southard is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Southard located?
- Mark Southard's practice location on file with NPPES is 900 W Clairmont Ave, Eau Claire, WI 54701.
- What is Mark Southard's phone number?
- The practice phone number listed in the NPPES registry for Mark Southard is (715) 839-4151.
- Does Mark Southard accept Medicare?
- Mark Southard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Southard's NPI active?
- Yes — Mark Southard's NPI (1003868811) is active in the NPPES registry as of the last update on 2022-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.