Brennan Harding, MD
NPI 1225018724 · Anesthesiology Physician · Marshfield, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brennan Harding, MD is a Anesthesiology Physician provider in Marshfield, WI (NPI 1225018724).
Provider details
- NPI number
- 1225018724
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44736-020 (WI)
Specialties & taxonomies
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
39 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 20 | $72 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 19 | $54 |
Typical Medicare-allowed amounts for these services range $54–$72 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 2727 Plaza DrWausau, WI 54401-4129Phone: (715) 847-3000
Registry dates
- Enumerated
- 2006-01-19
- Last updated
- 2024-02-07
- Certified
- 2024-02-07
Frequently asked questions
- What is Brennan Harding's NPI number?
- Brennan Harding's National Provider Identifier (NPI) is 1225018724, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brennan Harding's specialty?
- Brennan Harding is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Brennan Harding located?
- Brennan Harding's practice location on file with NPPES is 1000 N Oak Ave, Marshfield, WI 54449-4129.
- What is Brennan Harding's phone number?
- The practice phone number listed in the NPPES registry for Brennan Harding is (715) 387-5511.
- Does Brennan Harding accept Medicare?
- Brennan Harding is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brennan Harding's NPI active?
- Yes — Brennan Harding's NPI (1225018724) is active in the NPPES registry as of the last update on 2024-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.