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SARAH S NIELSEN DO
NPI 1134137995
Radiology - Diagnostic Radiology in Wausau, WI

Active since August 04, 2006PECOS EnrolledAccepts Medicare Assignment
82.79/100
CMS Quality Rating
2727 PLAZA DR, WAUSAU, WI 54401(715) 847-3000 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Sarah S Nielsen Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SARAH S NIELSEN DO (NPI 1134137995) is an individual diagnostic radiology provider in Wausau, Wisconsin, licensed in Wisconsin (49170) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Rice Lake, and is a graduate of Michigan State University College Of Osteopathic Medicine (2000).

NPPES Registry Identity

NPI1134137995
Entity TypeIndividualFemale
Primary Taxonomy2085R0202X
Provider Legal NameSARAH S NIELSENCredential: DO
Location Address2727 PLAZA DRWausau, WI 54401-4129
Mailing Address1000 N Oak AveMarshfield, WI 54449-5703 · (715) 387-5511
Phone(715) 847-3000
Sole ProprietorNo
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2000
Enumeration DateAugust 4, 2006
Last NPPES UpdateNovember 17, 2022
✔ NPI 1134137995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in WI · 49170
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2727 PLAZA DR, Wausau, WI 54401
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Sanford Health Plan.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

Sarah S Nielsen Do 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.

PECOS PAC ID6608871033
PECOS Enrollment IDI20060919000121
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Sarah Nielsen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mchs Hospitals Inc
Same address
Internal Medicine
2727 PLAZA DR
Wausau, WI 54401
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1164159109 (715) 847-3000
Marshfield Clinic Inc
33 mi
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,540 clinicians in this Medicare group
NPI 1952347981 (715) 387-5511
Memorial Hospital, Inc
54 mi
Clinical Medical Laboratory
216 SUNSET PL, MEMORIAL HOSPITAL, INC
Neillsville, WI 54456
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1346239373 (Wisconsin)
  • 1,283 clinicians in this Medicare group
NPI 1679746747 (715) 743-3101
Lakeview Medical Center Inc Of Rice Lake
100 mi
Clinic/Center
806 2ND ST
Chetek, WI 54728
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,616 clinicians in this Medicare group
NPI 1659008605 (715) 924-2000

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 10

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.

Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
1,913 services1,080 patients
Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
1,877 services1,060 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
397 services397 patients
Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
385 services385 patients
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) G0279
Diagnostic digital breast tomosynthesis is a 3D imaging test that allows doctors to examine your breast tissue layer by layer. It's performed on one or both sides. It helps in detecting abnormalities more accurately. It's often done in addition to other tests.
155 services77 patients
Limited ultrasound scan of 1 breast 76642
A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.
110 services56 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Marshfield Medical Center - Rice Lake

Acute Care Hospitals · Rice Lake, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520011
Location1700 West Stout StreetRice Lake, WI 54868 · Barron County
Emergency services Birthing friendly

Marshfield Medical Center - Weston

Acute Care Hospitals · Weston, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520202
Location3400 Ministry ParkwayWeston, WI 54476 · Marathon County
Emergency services Birthing friendly

Marshfield Medical Center - Minocqua

Acute Care Hospitals · Minocqua, WI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520212
Location9576 Highway 70Minocqua, WI 54548 · Oneida County
Emergency services Birthing friendly

Flambeau Hospital

Critical Access Hospitals · Park Falls, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521325
Location98 Sherry AvePark Falls, WI 54552 · Price County
Emergency services

Marshfield Medical Center - Ladysmith

Critical Access Hospitals · Ladysmith, WI
OwnershipGovernment - Hospital District or Authority
CMS Certification Number521328
Location1200 Port Arthur RdLadysmith, WI 54848 · Rusk County
Emergency services

Physician 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.

New Patient
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

82.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.98
Promoting Interoperability99
Improvement Activities40
Cost66.19

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.

MS. JACQUELYN FORBES KEARNS MS,ARNP-C
Nurse Practitioner (Adult Health)
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000
ELAINE J. OLSEN CRNA
Nurse Anesthetist, Certified Registered
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000
SWATI S BISWAS MD
Physical Medicine & Rehabilitation
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3042
HEATHER L. LANDWEHR PA
Physician Assistant
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000
JOHN F WEBB MD
Emergency Medicine
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3434
DR. ARTI KHURANA MD
Internal Medicine (Rheumatology)
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000
THOMAS CRAIG HUPY M.D.
Emergency Medicine
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000
JESSICA JEAN WINCENTSEN APNP
Nurse Practitioner (Psychiatric/Mental Health)
2727 PLAZA DR
WAUSAU, WI 54401
Marathon County (715) 847-3000

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 Sarah Nielsen's NPI number?

The NPI number for Sarah Nielsen is 1134137995. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Where is Sarah Nielsen located?

Sarah Nielsen practices at 2727 Plaza Dr, Wausau, WI 54401. The listed phone number is (715) 847-3000.

What is Sarah Nielsen's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Sarah Nielsen enrolled in Medicare?

Yes. Sarah Nielsen 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 Sarah Nielsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Nielsen reassigns Medicare benefits to 4 organizations: Mchs Hospitals Inc (Wausau, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI) and Lakeview Medical Center Inc Of Rice Lake (Chetek, 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 Sarah Nielsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sarah Nielsen accept?

Health plans from Sanford Health Plan list Sarah Nielsen 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 Sarah Nielsen affiliated with any hospitals?

According to CMS data, Sarah Nielsen is affiliated with Marshfield Medical Center - Rice Lake, Marshfield Medical Center - Weston, Marshfield Medical Center - Minocqua, Flambeau Hospital and Marshfield Medical Center - Ladysmith.

When was this NPI record last updated?

The NPPES record for Sarah Nielsen was last updated on November 17, 2022. 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.