Nicholas Willius, DO
NPI 1306251343 · Anesthesiology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Willius, DO is a Anesthesiology Physician provider in Phoenix, AZ (NPI 1306251343).
Provider details
- NPI number
- 1306251343
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- R3657 (KY)
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
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
43 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 | $149 |
| Anesthesia for Total Hip Replacement01214 | 12 | $344 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $128 |
Typical Medicare-allowed amounts for these services range $128–$344 (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 (2)
- 800 Rose StAnesthesiologyLexington, KY 40536-0001Phone: (859) 218-0069Fax: (859) 323-1080
- 800 Rose StAnesthesiologyLexington, KY 40536-0001Phone: (859) 218-0069Fax: (859) 323-1080
Registry dates
- Enumerated
- 2014-06-28
- Last updated
- 2025-06-19
- Certified
- 2025-06-19
Frequently asked questions
- What is Nicholas Willius's NPI number?
- Nicholas Willius's National Provider Identifier (NPI) is 1306251343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Willius's specialty?
- Nicholas Willius is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Willius located?
- Nicholas Willius's practice location on file with NPPES is 1850 N Central Ave, Phoenix, AZ 85004-4527.
- What is Nicholas Willius's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Willius is (602) 262-8900.
- Does Nicholas Willius accept Medicare?
- Nicholas Willius is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Willius's NPI active?
- Yes — Nicholas Willius's NPI (1306251343) is active in the NPPES registry as of the last update on 2025-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.