DR. WILLIAM YAW CEDRIC ANSA OTU M.D
NPI 1346564168
Hospitalist in Green Bay, WI
About Dr. William Yaw Cedric Ansa Otu M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM YAW CEDRIC ANSA OTU M.D (NPI 1346564168) is an individual hospitalist provider in Green Bay, Wisconsin, licensed in Wisconsin (54003-020) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS, is affiliated with Aspirus Stevens Point Hospital & Clinics, Inc., and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Dr. William Yaw Cedric Ansa Otu 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
13Medicare enrollment records show William Ansa Otu reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Green Bay, WI 54301
- Reassigned Medicare billing, Wisconsin enrollment
- 216 clinicians in this Medicare group
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 742 clinicians in this Medicare group
Appleton, WI 54915
- Reassigned Medicare billing, Wisconsin enrollment
- 194 clinicians in this Medicare group
Neenah, WI 54956
- Reassigned Medicare billing, Wisconsin enrollment
- 444 clinicians in this Medicare group
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1447737762 (Wisconsin)
- 673 clinicians in this Medicare group
Iola, WI 54945
- Reassigned Medicare billing, Wisconsin enrollment
- 935 clinicians in this Medicare group
Wittenberg, WI 54499
- Reassigned Medicare billing, Wisconsin enrollment
- 633 clinicians in this Medicare group
Birnamwood, WI 54414
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1639187412 (Wisconsin)
- 321 clinicians in this Medicare group
Stevens Point, WI 54481
- Reassigned Medicare billing, Wisconsin enrollment
- 619 clinicians in this Medicare group
Mequon, WI 53097
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 856 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 6
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aspirus Stevens Point Hospital & Clinics, Inc.
Acute Care Hospitals · Stevens Point, WIAspirus Wausau Hospital
Acute Care Hospitals · Wausau, WIAspirus Riverview Hospital & Clinics Inc
Acute Care Hospitals · Wisconsin Rapids, WISt Mary's Hospital Medical Center
Acute Care Hospitals · Green Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54311 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREEN BAY, WI 54311
GREEN BAY, WI 54311
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 William Ansa Otu's NPI number?
The NPI number for William Ansa Otu is 1346564168. It was assigned to this individual provider in the NPPES registry on March 23, 2010.
Where is William Ansa Otu located?
William Ansa Otu practices at 2845 Greenbrier Rd, Green Bay, WI 54311. The listed phone number is (920) 288-8100.
What is William Ansa Otu's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is William Ansa Otu enrolled in Medicare?
Yes. William Ansa Otu 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 William Ansa Otu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Ansa Otu reassigns Medicare benefits to 13 organizations: St. Clare Memorial Hospital, Inc. (Green Bay, WI), St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (Green Bay, WI), Ascension NE Wisconsin, Inc (Appleton, WI), Ascension Medical Group-Fox Valley Wisconsin, Inc (Neenah, WI), St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (Sheboygan, WI) and 8 more organizations, listed in the Medicare section above. 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 William Ansa Otu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Ansa Otu accept?
Health plans from Anthem Blue Cross and Blue Shield and Aspirus Health Plan list William Ansa Otu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Ansa Otu affiliated with any hospitals?
According to CMS data, William Ansa Otu is affiliated with Aspirus Stevens Point Hospital & Clinics, Inc., Aspirus Wausau Hospital, Aspirus Riverview Hospital & Clinics Inc and St Mary's Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for William Ansa Otu was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. William Yaw Cedric Ansa Otu, M.D · NPI 1346564168
Hospitalist physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since March 23, 2010.
## Identity
- **NPI:** 1346564168 (Entity type: Individual)
- **Enumerated:** March 23, 2010
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 54003-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2845 GREENBRIER RD, Green Bay, WI 54311-6519
- **Phone:** (920) 288-8100
## 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:** 13 organizations under Medicare reassignment (form CMS-855R): St. Clare Memorial Hospital, Inc. (NPI 1093173791, Green Bay, WI); St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (NPI 1285613638, Green Bay, WI); Ascension NE Wisconsin, Inc (NPI 1407803638, Appleton, WI); Ascension Medical Group-Fox Valley Wisconsin, Inc (NPI 1730126392, Neenah, WI); St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (NPI 1275799413, Sheboygan, WI); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** August 9, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1346564168) · Data from the CMS NPPES public registry.