MICHAEL J DARR ANP
NPI 1639638174
Nurse Practitioner - Family in Wausau, WI
About Michael J Darr Anp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL J DARR ANP (NPI 1639638174) is an individual family provider in Wausau, Wisconsin, licensed in Wisconsin (9134-33) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Aspirus Rhinelander Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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 J Darr Anp 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
3Medicare enrollment records show Michael Darr reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- 2,476 clinicians in this Medicare group
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Langlade Hospital - Hotel Dieu Of St Joseph Of Antigo Wisconsin
- 321 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 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 Rhinelander Hospital
Acute Care Hospitals · Rhinelander, WIMarshfield Medical Center
Acute Care Hospitals · Marshfield, WIMarshfield Medical Center - Weston
Acute Care Hospitals · Weston, WILanglade Hospital
Critical Access Hospitals · Antigo, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54401 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.
Referred Medical Equipment & Supplies CMS DME claims 3
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.
WAUSAU, WI 54401
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 Darr's NPI number?
The NPI number for Michael Darr is 1639638174. It was assigned to this individual provider in the NPPES registry on March 14, 2019.
Where is Michael Darr located?
Michael Darr practices at 2727 Plaza Dr, Wausau, WI 54401. The listed phone number is (715) 847-3000.
What is Michael Darr's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Michael Darr enrolled in Medicare?
Yes. Michael Darr 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 Darr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Darr reassigns Medicare benefits to 3 organizations: Mchs Hospitals Inc (Wausau, WI), Langlade Memorial Hospital Hotel Dieu Of St Joseph (Wausau, WI) and Marshfield Clinic Inc (Marshfield, 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 Darr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Darr accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan and HealthPartners list Michael Darr 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 Darr affiliated with any hospitals?
According to CMS data, Michael Darr is affiliated with Aspirus Rhinelander Hospital, Marshfield Medical Center, Marshfield Medical Center - Weston and Langlade Hospital.
When was this NPI record last updated?
The NPPES record for Michael Darr was last updated on March 14, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 J Darr, ANP · NPI 1639638174
Family physician in Wausau, Wisconsin. Individual provider, active in the CMS NPPES registry since March 14, 2019.
## Identity
- **NPI:** 1639638174 (Entity type: Individual)
- **Enumerated:** March 14, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 9134-33 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2727 PLAZA DR, Wausau, WI 54401-4129
- **Phone:** (715) 847-3000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mchs Hospitals Inc (NPI 1164159109, Wausau, WI); Langlade Memorial Hospital Hotel Dieu Of St Joseph (NPI 1871630863, Wausau, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** March 14, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1639638174) · Data from the CMS NPPES public registry.