KATHRYN J. SMRZ APNP
NPI 1972938314
Nurse Practitioner - Adult Health in Marshfield, WI
About Kathryn J. Smrz Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHRYN J. SMRZ APNP (NPI 1972938314) is an individual adult health provider in Marshfield, Wisconsin, licensed in Wisconsin (5438) and active in the NPI registry since September 2013. She is enrolled in Medicare PECOS, is affiliated with Aspirus Wausau Hospital, and maintains a secondary practice location in Wausau.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Kathryn J. Smrz 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
10Medicare enrollment records show Kathryn Smrz reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- 12 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Waupun, WI 53963
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 clinicians in this Medicare group
Waukesha, WI 53188
- Reassigned Medicare billing, Wisconsin enrollment
- 141 clinicians in this Medicare group
Waukesha, WI 53186
- Reassigned Medicare billing, Wisconsin enrollment
- 191 clinicians in this Medicare group
Framingham, MA 01702
- Reassigned Medicare billing, Wisconsin enrollment
- 2 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 4
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.
Aspirus Wausau Hospital
Acute Care Hospitals · Wausau, WIMarshfield Medical Center
Acute Care Hospitals · Marshfield, WIMarshfield Medical Center - Neillsville
Critical Access Hospitals · Neillsville, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54449 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARSHFIELD, WI 54449
MARSHFIELD, WI 54449
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 Kathryn Smrz's NPI number?
The NPI number for Kathryn Smrz is 1972938314. It was assigned to this individual provider in the NPPES registry on September 4, 2013.
Where is Kathryn Smrz located?
Kathryn Smrz practices at 1000 North Oak Avenue, Marshfield, WI 54449. The listed phone number is (715) 387-5511.
What is Kathryn Smrz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Kathryn Smrz enrolled in Medicare?
Yes. Kathryn Smrz 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 Kathryn Smrz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Smrz reassigns Medicare benefits to 10 organizations: Marshfield Clinic Inc (Marshfield, WI), Mchs Hospitals Inc (Marshfield, WI), Memorial Hospital Inc (Neillsville, WI), Interim Hospice & Palliative Care (Wausau, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI) and 5 more organizations, listed in the Medicare section above. 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 Kathryn Smrz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathryn Smrz accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), HealthPartners, Sanford Health Plan and Security Health Plan list Kathryn Smrz 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 Kathryn Smrz affiliated with any hospitals?
According to CMS data, Kathryn Smrz is affiliated with Aspirus Wausau Hospital, Marshfield Medical Center and Marshfield Medical Center - Neillsville.
When was this NPI record last updated?
The NPPES record for Kathryn Smrz was last updated on July 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Kathryn J. Smrz, APNP · NPI 1972938314
Adult Health physician in Marshfield, Wisconsin. Individual provider, active in the CMS NPPES registry since September 4, 2013.
## Identity
- **NPI:** 1972938314 (Entity type: Individual)
- **Enumerated:** September 4, 2013
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 5438 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 NORTH OAK AVENUE, Marshfield, WI 54449-5703
- **Phone:** (715) 387-5511
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Mchs Hospitals Inc (NPI 1093221434, Marshfield, WI); Memorial Hospital Inc (NPI 1124017140, Neillsville, WI); Interim Hospice & Palliative Care (NPI 1215229604, Wausau, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** July 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1972938314) · Data from the CMS NPPES public registry.