MICHAEL S OLDENBURG MD
NPI 1770847683
Otolaryngology in Green Bay, WI
About Michael S Oldenburg Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL S OLDENBURG MD (NPI 1770847683) is an individual otolaryngology provider in Green Bay, Wisconsin, licensed in Wisconsin (67254-20) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS, is affiliated with St Vincent Hospital, and is a graduate of University Of Wisconsin School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Michael S Oldenburg Md 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 Michael Oldenburg reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 742 clinicians in this Medicare group
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 673 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Vincent Hospital
Acute Care Hospitals · Green Bay, WISt Mary's Hospital Medical Center
Acute Care Hospitals · Green Bay, WIDoor County Medical Center
Critical Access Hospitals · Sturgeon Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54303 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 54303
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 Michael Oldenburg's NPI number?
The NPI number for Michael Oldenburg is 1770847683. It was assigned to this individual provider in the NPPES registry on June 26, 2012.
Where is Michael Oldenburg located?
Michael Oldenburg practices at 1860 Shawano Ave, Green Bay, WI 54303. The listed phone number is (920) 496-4700.
What is Michael Oldenburg's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is Michael Oldenburg enrolled in Medicare?
Yes. Michael Oldenburg 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 Michael Oldenburg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Oldenburg reassigns Medicare benefits to 2 organizations: St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (Green Bay, WI) and St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (Sheboygan, 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 Michael Oldenburg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Oldenburg accept?
Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health and Security Health Plan list Michael Oldenburg 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 Michael Oldenburg affiliated with any hospitals?
According to CMS data, Michael Oldenburg is affiliated with St Vincent Hospital, St Mary's Hospital Medical Center and Door County Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Oldenburg was last updated on February 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Michael S Oldenburg, MD · NPI 1770847683
Otolaryngology physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since June 26, 2012.
## Identity
- **NPI:** 1770847683 (Entity type: Individual)
- **Enumerated:** June 26, 2012
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** 67254-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1860 SHAWANO AVE, Green Bay, WI 54303-2667
- **Phone:** (920) 496-4700
## 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): St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (NPI 1285613638, Green Bay, WI); St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (NPI 1275799413, Sheboygan, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** February 5, 2024
- **Other identifiers:** Medicaid 100037584 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1770847683) · Data from the CMS NPPES public registry.