Brian Markhardt, MD
NPI 1154335420 · Diagnostic Radiology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Markhardt, MD is a Diagnostic Radiology Physician provider in Madison, WI (NPI 1154335420).
Provider details
- NPI number
- 1154335420
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A 102863 (CA)
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
19 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
2,885 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 | 241 | $8 |
| X-Ray of Chest, 2 Views71046 | 167 | $31 |
| Ct Scan Head Or Brain Without Contrast70450 | 106 | $37 |
| X-Ray of Chest, 2 Views71046 | 105 | $10 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 93 | $80 |
| X-Ray of Hip, 2-3 Views73502 | 81 | $39 |
| X-Ray of Shoulder, Minimum of 2 Views |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2008-11-17
Frequently asked questions
- What is Brian Markhardt's NPI number?
- Brian Markhardt's National Provider Identifier (NPI) is 1154335420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Markhardt's specialty?
- Brian Markhardt is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Markhardt located?
- Brian Markhardt's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-0001.
- What is Brian Markhardt's phone number?
- The practice phone number listed in the NPPES registry for Brian Markhardt is (608) 265-8231.
- Does Brian Markhardt accept Medicare?
- Brian Markhardt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Markhardt's NPI active?
- Yes — Brian Markhardt's NPI (1154335420) is active in the NPPES registry as of the last update on 2008-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.