MRS. DIANE M OPPENEER APNP
NPI 1831174143
Nurse Practitioner in Manitowoc, WI
About Mrs. Diane M Oppeneer Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. DIANE M OPPENEER APNP (NPI 1831174143) is an individual nurse practitioner in Manitowoc, Wisconsin, licensed in Wisconsin (2302-033) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Holy Family Memorial, and is a graduate of Other (2003).
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
Mrs. Diane M Oppeneer Apnp 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 Diane Oppeneer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Manitowoc, WI 54220
- Reassigned Medicare billing, Wisconsin enrollment
- 46 clinicians in this Medicare group
Manitowoc, WI 54220
- Reassigned Medicare billing, Wisconsin enrollment
- 350 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holy Family Memorial
Acute Care Hospitals · Manitowoc, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54220 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Diane Oppeneer's NPI number?
The NPI number for Diane Oppeneer is 1831174143. It was assigned to this individual provider in the NPPES registry on December 8, 2005.
Where is Diane Oppeneer located?
Diane Oppeneer practices at 1650 S 41st St, Manitowoc, WI 54220. The listed phone number is (920) 476-6200.
What is Diane Oppeneer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Diane Oppeneer enrolled in Medicare?
Yes. Diane Oppeneer 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 Diane Oppeneer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Oppeneer reassigns Medicare benefits to 2 organizations: Lakeshore Community Health Care, Inc (Manitowoc, WI) and Froedtert Manitowoc Medical Group, LLC (Manitowoc, 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 Diane Oppeneer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Oppeneer accept?
Health plans from Dean Health Plan and Quartz list Diane Oppeneer 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 Diane Oppeneer affiliated with any hospitals?
According to CMS data, Diane Oppeneer is affiliated with Holy Family Memorial.
When was this NPI record last updated?
The NPPES record for Diane Oppeneer was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Mrs. Diane M Oppeneer, APNP · NPI 1831174143
Nurse Practitioner physician in Manitowoc, Wisconsin. Individual provider, active in the CMS NPPES registry since December 8, 2005.
## Identity
- **NPI:** 1831174143 (Entity type: Individual)
- **Enumerated:** December 8, 2005
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2302-033 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1650 S 41ST ST, Manitowoc, WI 54220-7316
- **Phone:** (920) 476-6200
## 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): Lakeshore Community Health Care, Inc (NPI 1508391020, Manitowoc, WI); Froedtert Manitowoc Medical Group, LLC (NPI 1437829975, Manitowoc, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** October 9, 2025
- **Other identifiers:** Medicaid 411763000 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1831174143) · Data from the CMS NPPES public registry.