ANN ELIZABETH DETTLAFF APNP
NPI 1215236278
Nurse Practitioner in Oshkosh, WI
About Ann Elizabeth Dettlaff Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN ELIZABETH DETTLAFF APNP (NPI 1215236278) is an individual nurse practitioner in Oshkosh, Wisconsin, licensed in Wisconsin (4360-033) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS and maintains a secondary practice location in Appleton.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Other Identifiers 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 (PECOS)
Ann Elizabeth Dettlaff Apnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ann Dettlaff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Menasha, WI 54952
- Reassigned Medicare billing, Wisconsin enrollment
- 988 clinicians in this Medicare group
Wild Rose, WI 54984
- Reassigned Medicare billing, Wisconsin enrollment
- 42 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54902 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 9
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 Ann Dettlaff's NPI number?
The NPI number for Ann Dettlaff is 1215236278. It was assigned to this individual provider in the NPPES registry on March 16, 2011. The provider is also known as Ann Elizabeth Priest Apnp.
Where is Ann Dettlaff located?
Ann Dettlaff practices at 250 W 6th Ave, Oshkosh, WI 54902. The listed phone number is (920) 237-5000.
What is Ann Dettlaff's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Ann Dettlaff enrolled in Medicare?
Yes. Ann Dettlaff is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ann Dettlaff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Dettlaff reassigns Medicare benefits to 2 organizations: Thedacare, Incorporated (Menasha, WI) and Thedacare Medical Center - Wild Rose, Inc (Wild Rose, 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 Ann Dettlaff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ann Dettlaff accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 1 other insurer list Ann Dettlaff 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.
When was this NPI record last updated?
The NPPES record for Ann Dettlaff was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Ann Elizabeth Dettlaff, APNP · NPI 1215236278
Nurse Practitioner physician in Oshkosh, Wisconsin. Individual provider, active in the CMS NPPES registry since March 16, 2011.
## Identity
- **NPI:** 1215236278 (Entity type: Individual)
- **Enumerated:** March 16, 2011
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 4360-033 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 W 6TH AVE, Oshkosh, WI 54902-5910
- **Phone:** (920) 237-5000 · **Fax:** (920) 237-5011
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Thedacare, Incorporated (NPI 1306959515, Menasha, WI); Thedacare Medical Center - Wild Rose, Inc (NPI 1043263999, Wild Rose, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 29, 2026
- **Other identifiers:** Medicaid 100014463 (WI); Medicaid 1215236278 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1215236278) · Data from the CMS NPPES public registry.