JAMES A OTTEVAERE II M.D.
NPI 1356343107
Anesthesiology in Eau Claire, WI
About James A Ottevaere Ii M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES A OTTEVAERE II M.D. (NPI 1356343107) is an individual anesthesiology provider in Eau Claire, Wisconsin, licensed in Wisconsin (38778) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System Eau Claire Hospital, and is a graduate of University Of Michigan Medical School (1993).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
James A Ottevaere Ii M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show James Ottevaere reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Eau Claire, WI 54701
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1154372944 (Wisconsin)
- 1,248 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,003 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mayo Clinic Health System Eau Claire Hospital
Acute Care Hospitals · Eau Claire, WIMayo Clinic Health System-Northland
Critical Access Hospitals · Barron, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is James Ottevaere's NPI number?
The NPI number for James Ottevaere is 1356343107. It was assigned to this individual provider in the NPPES registry on August 11, 2005.
Where is James Ottevaere located?
James Ottevaere practices at 1221 Whipple St, Eau Claire, WI 54703. The listed phone number is (715) 838-3311.
What is James Ottevaere's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is James Ottevaere enrolled in Medicare?
Yes. James Ottevaere is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for James Ottevaere's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Ottevaere reassigns Medicare benefits to 2 organizations: Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (Eau Claire, WI) and Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Ottevaere's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Ottevaere affiliated with any hospitals?
According to CMS data, James Ottevaere is affiliated with Mayo Clinic Health System Eau Claire Hospital and Mayo Clinic Health System-Northland.
When was this NPI record last updated?
The NPPES record for James Ottevaere was last updated on December 8, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# James A Ottevaere II, M.D. · NPI 1356343107
Anesthesiology physician in Eau Claire, Wisconsin. Individual provider, active in the CMS NPPES registry since August 11, 2005.
## Identity
- **NPI:** 1356343107 (Entity type: Individual)
- **Enumerated:** August 11, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 38778 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1221 WHIPPLE ST, Eau Claire, WI 54703-5270
- **Phone:** (715) 838-3311
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (NPI 1235588831, Eau Claire, WI); Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (NPI 1629056049, La Crosse, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1993
## Record status
- **NPPES last updated:** December 8, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1356343107) · Data from the CMS NPPES public registry.