John Spencer, CAA
NPI 1740993435 · Anesthesiologist Assistant · Milwaukee, WI
Enrolled with Medicare as Practitioner - Anesthesiology Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Spencer, CAA is a Anesthesiologist Assistant provider in Milwaukee, WI (NPI 1740993435).
Provider details
- NPI number
- 1740993435
- Entity type
- Individual
- Primary specialty
- Anesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CAA
- Sex
- Male
- Sole proprietor
- No
- License
- 520-17 (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
3 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
26 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 | 13 | $74 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 13 | $108 |
Typical Medicare-allowed amounts for these services range $74–$108 (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
Registry dates
- Enumerated
- 2022-12-28
- Last updated
- 2023-01-26
- Certified
- 2023-01-26
Frequently asked questions
- What is John Spencer's NPI number?
- John Spencer's National Provider Identifier (NPI) is 1740993435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Spencer's specialty?
- John Spencer is listed in the NPPES registry with a primary specialty of Anesthesiologist Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Spencer located?
- John Spencer's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is John Spencer's phone number?
- The practice phone number listed in the NPPES registry for John Spencer is (414) 805-8700.
- Does John Spencer accept Medicare?
- John Spencer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Spencer's NPI active?
- Yes — John Spencer's NPI (1740993435) is active in the NPPES registry as of the last update on 2023-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.