Eric Xanthopoulos, MD
NPI 1457693079 · Radiation Oncology Physician · Beloit, WI
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Xanthopoulos, MD is a Radiation Oncology Physician provider in Beloit, WI (NPI 1457693079).
Provider details
- NPI number
- 1457693079
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-146949 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,871 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 2,002 | $42 |
| Calculation of Radiation Therapy Dose77300 | 531 | $31 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 365 | $180 |
| Design and Construction of Complex Radiation Treatment Device77334 | 254 | $57 |
| 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 | 144 | $15 |
| Complex Radiation Therapy Planning77263 | 91 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 51 | 24 |
| Oxycodone Hcl | 40 | 22 |
| Levothyroxine Sodium | 35 | — |
| Omeprazole | 19 | — |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 19 | — |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 19 | — |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$267 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-21
- Last updated
- 2021-03-31
- Certified
- 2021-03-31
Frequently asked questions
- What is Eric Xanthopoulos's NPI number?
- Eric Xanthopoulos's National Provider Identifier (NPI) is 1457693079, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Xanthopoulos's specialty?
- Eric Xanthopoulos is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Xanthopoulos located?
- Eric Xanthopoulos's practice location on file with NPPES is Beloit Health System Uw Cancer Center, Beloit, WI 53511-3935.
- What is Eric Xanthopoulos's phone number?
- The practice phone number listed in the NPPES registry for Eric Xanthopoulos is (608) 364-5253.
- Does Eric Xanthopoulos accept Medicare?
- Eric Xanthopoulos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Xanthopoulos's NPI active?
- Yes — Eric Xanthopoulos's NPI (1457693079) is active in the NPPES registry as of the last update on 2021-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.