John Floberg, M.D., PH.D.
NPI 1225456981 · Radiation Oncology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Floberg, M.D., PH.D. is a Radiation Oncology Physician provider in Madison, WI (NPI 1225456981).
Provider details
- NPI number
- 1225456981
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2015013465 (MO)
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
12 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
2,718 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 874 | $42 |
| Calculation of Radiation Therapy Dose77300 | 514 | $31 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 171 | $177 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 167 | $15 |
| Design and Construction of Complex Radiation Treatment Device77334 | 122 | $57 |
| Complex Radiation Therapy Planning77263 | 98 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 180 | 69 |
| Ciprofloxacin Hcl | 73 | 63 |
| Relugolixbrand: Orgovyx | 63 | 15 |
| Bicalutamide | 45 | 37 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 17 | — |
| Lorazepam | 14 | 14 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2021-01-20
- Certified
- 2021-01-20
Frequently asked questions
- What is John Floberg's NPI number?
- John Floberg's National Provider Identifier (NPI) is 1225456981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Floberg's specialty?
- John Floberg is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Floberg located?
- John Floberg's practice location on file with NPPES is 2140, Med 4 Mailbox, Hslc, Madison, WI 53705.
- What is John Floberg's phone number?
- The practice phone number listed in the NPPES registry for John Floberg is (608) 263-8500.
- Does John Floberg accept Medicare?
- John Floberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Floberg's NPI active?
- Yes — John Floberg's NPI (1225456981) is active in the NPPES registry as of the last update on 2021-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.