MARISSA LORENA WALCZAK FNP-BC
NPI 1871291906
Nurse Practitioner - Family in Rice Lake, WI

Q: What is Marissa Walczak's NPI number?

The NPI number for Marissa Walczak is 1871291906. It was assigned to this individual provider in the NPPES registry on February 17, 2023.

Q: What is Marissa Walczak's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Q: When was this NPI record last updated?

The NPPES record for Marissa Walczak was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since February 17, 2023PECOS EnrolledAccepts Medicare Assignment

2900 S WISCONSIN AVE, RICE LAKE, WI 54868(715) 997-3915 Get Directions Write a Review

NPPES record last updated: January 12, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 12, 2026, Jun 3, 2025, Jun 14, 2023 and 1 more (4 updates tracked since 2023).

On this page

About Marissa Lorena Walczak Fnp-bc NPPES

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

MARISSA LORENA WALCZAK FNP-BC (NPI 1871291906) is an individual family provider in Rice Lake, Wisconsin, licensed in Wisconsin (13864-33) and active in the NPI registry since February 2023. She is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Rice Lake, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1871291906

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMARISSA LORENA WALCZAKCredential: FNP-BC

Location Address2900 S WISCONSIN AVERice Lake, WI 54868-8578

Mailing Address719 W Hamilton Ave Ste BEau Claire, WI 54701-6970

Phone(715) 997-3915

Sole ProprietorNo

Medical School CMSOtherGraduated 2022

Enumeration DateFebruary 17, 2023

Last NPPES UpdateJanuary 12, 20264 updates tracked since enumeration

NPPES CertifiedJanuary 12, 2026

✔ NPI 1871291906 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in WI · 13864-33

2900 S WISCONSIN AVE, Rice Lake, WI 54868

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, HealthPartners, Medica and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marissa Lorena Walczak Fnp-bc 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 ID5193184802

PECOS Enrollment IDI20230628003265

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.

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

Acute Care Hospitals · Marshfield, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number520037

Location611 St Joseph AveMarshfield, WI 54449 · Wood County

Emergency services Birthing friendly

Marshfield Medical Center - Eau Claire

Acute Care Hospitals · Eau Claire, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520210

Location2310 Craig RdEau Claire, WI 54701 · Eau Claire 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

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 54868 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

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. TODD C SWANSON OD

Optometrist