Michael Bills, CAA
NPI 1184149387 · Anesthesiologist Assistant · West Allis, WI
Enrolled with Medicare as Practitioner - Anesthesiology Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Bills, CAA is a Anesthesiologist Assistant provider in West Allis, WI (NPI 1184149387).
Provider details
- NPI number
- 1184149387
- Entity type
- Individual
- Primary specialty
- Anesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CAA
- Sex
- Male
- Sole proprietor
- No
- License
- 99-017 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
96 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 Large Bowel Using an Endoscope00811 | 46 | $59 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 19 | $63 |
| Anesthesia for Lens Surgery00142 | 18 | $57 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 13 | $47 |
Typical Medicare-allowed amounts for these services range $47–$63 (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)
- 2301 N Lake DrMilwaukee, WI 53211-4508Phone: (262) 923-3737
Registry dates
- Enumerated
- 2017-08-08
- Last updated
- 2021-12-08
- Certified
- 2021-12-08
Frequently asked questions
- What is Michael Bills's NPI number?
- Michael Bills's National Provider Identifier (NPI) is 1184149387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Bills's specialty?
- Michael Bills is listed in the NPPES registry with a primary specialty of Anesthesiologist Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Bills located?
- Michael Bills's practice location on file with NPPES is 8901 W Lincoln Ave, West Allis, WI 53227-2409.
- What is Michael Bills's phone number?
- The practice phone number listed in the NPPES registry for Michael Bills is (414) 328-6000.
- Does Michael Bills accept Medicare?
- Michael Bills is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Bills's NPI active?
- Yes — Michael Bills's NPI (1184149387) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.