MICHELLE KOSMALSKI MD
NPI 1427491992
Family Medicine in West Allis, WI

Active since April 15, 2013PECOS EnrolledAccepts Medicare Assignment
6609 W GREENFIELD AVE, WEST ALLIS, WI 53214(414) 257-8577(414) 257-8505 Get Directions Write a Review

NPPES record last updated: April 3, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 3, 2025, Oct 25, 2022, Sep 14, 2016 (3 updates tracked since 2016).

About Michelle Kosmalski Md NPPES

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

MICHELLE KOSMALSKI MD (NPI 1427491992) is an individual family medicine provider in West Allis, Wisconsin, licensed in Wisconsin (65568-20) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Sussex, and is a graduate of University Of Wisconsin School Of Medicine (2013).

NPPES Registry Identity

NPI1427491992
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMICHELLE KOSMALSKICredential: MD
Location Address6609 W GREENFIELD AVEWest Allis, WI 53214-4958
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Fax(414) 257-8505
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2013
Enumeration DateApril 15, 2013
Last NPPES UpdateApril 3, 20253 updates tracked since enumeration
NPPES CertifiedApril 3, 2025
✔ NPI 1427491992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in WI · 65568-20
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
6609 W GREENFIELD AVE, West Allis, WI 53214

Secondary Practice Location 1

Location 1W227N6103 Sussex RdSussex, WI 53089 · Phone (414) 566-8100 · Fax (414) 566-8038

Other Identifiers 1

Medicaid100059243WI

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

Michelle Kosmalski Md 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 ID547555393
PECOS Enrollment IDI20160818001746
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 Michelle Kosmalski reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Obstetrics & Gynecology
8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
Multi-Specialty
2323 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
  • 856 clinicians in this Medicare group
Family Medicine
2000 E LAYTON AVE STE 100
Saint Francis, WI 53235
  • Reassigned Medicare billing, Wisconsin enrollment
  • 960 clinicians in this Medicare group
Family Medicine
3003 W GOOD HOPE RD
Milwaukee, WI 53209
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,615 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 53214 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 20

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

Nurse Practitioner
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Physician Assistant
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Physician Assistant
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Nurse Practitioner
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Nurse Practitioner
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Surgery
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Nurse Practitioner
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214
Family Medicine
6609 W GREENFIELD AVE
WEST ALLIS, WI 53214

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 Michelle Kosmalski's NPI number?

The NPI number for Michelle Kosmalski is 1427491992. It was assigned to this individual provider in the NPPES registry on April 15, 2013.

Where is Michelle Kosmalski located?

Michelle Kosmalski practices at 6609 W Greenfield Ave, West Allis, WI 53214. The listed phone number is (414) 257-8577.

What is Michelle Kosmalski's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Michelle Kosmalski enrolled in Medicare?

Yes. Michelle Kosmalski 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 Michelle Kosmalski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Kosmalski reassigns Medicare benefits to 4 organizations: Aurora Medical Group, Inc. (West Allis, WI), Columbia St. Mary's Hospital Milwaukee Inc (Milwaukee, WI), Lakeshore Medical Clinic, LLC (Saint Francis, WI) and Aurora Advanced Healthcare, Inc. (Milwaukee, 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 Michelle Kosmalski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michelle Kosmalski accept?

Health plans from CareSource (Common Ground Healthcare) and UnitedHealthcare list Michelle Kosmalski 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 Michelle Kosmalski was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.