James Simmons, MD
NPI 1235494295 · Anesthesiology Physician · Janesville, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Simmons, MD is a Anesthesiology Physician provider in Janesville, WI (NPI 1235494295).
Provider details
- NPI number
- 1235494295
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036138041 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 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 Lens Surgery00142 | 23 | $107 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 20 | $154 |
Typical Medicare-allowed amounts for these services range $107–$154 (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 (3)
- 611 W. Park St.AnesthesiologyUrbana, IL 61801-2500Phone: (217) 383-6941
- 611 W. Park St.AnesthesiologyUrbana, IL 61801-2500Phone: (217) 383-6941
- 1506 S Oneida StAppleton, WI 54915-1305Phone: (920) 738-2000
Registry dates
- Enumerated
- 2012-07-05
- Last updated
- 2018-08-27
Frequently asked questions
- What is James Simmons's NPI number?
- James Simmons's National Provider Identifier (NPI) is 1235494295, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Simmons's specialty?
- James Simmons is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is James Simmons located?
- James Simmons's practice location on file with NPPES is 1000 Mineral Point Ave, Janesville, WI 53548.
- What is James Simmons's phone number?
- The practice phone number listed in the NPPES registry for James Simmons is (608) 756-6731.
- Does James Simmons accept Medicare?
- James Simmons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Simmons's NPI active?
- Yes — James Simmons's NPI (1235494295) is active in the NPPES registry as of the last update on 2018-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.