Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARGARET M GRENISEN MD
NPI 1447231766
Family Medicine in La Crosse, WI

Q: What is Margaret Grenisen's NPI number?

The NPI number for Margaret Grenisen is 1447231766. It was assigned to this individual provider in the NPPES registry on November 14, 2005.

Q: What is Margaret Grenisen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Margaret Grenisen was last updated on June 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 days 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 November 14, 2005PECOS Enrolled

800 WEST AVE S, LA CROSSE, WI 54601(608) 392-9891 Get Directions Write a Review

NPPES record last updated: June 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 14, 2022, Jun 1, 2021, Sep 15, 2020 and 1 more (4 updates tracked since 2019).

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About Margaret M Grenisen Md NPPES

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

MARGARET M GRENISEN MD (NPI 1447231766) is an individual family medicine provider in La Crosse, Wisconsin, licensed in Wisconsin (32890) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447231766

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameMARGARET M GRENISENCredential: MD

Location Address800 WEST AVE SLa Crosse, WI 54601-8806

Mailing Address200 1st St SwRochester, MN 55905-0001 · (608) 785-0940

Phone(608) 392-9891

Sole ProprietorNo

Enumeration DateNovember 14, 2005

Last NPPES UpdateJune 15, 20264 updates tracked since enumeration

NPPES CertifiedJune 15, 2026

✔ NPI 1447231766 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 · 32890

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.

800 WEST AVE S, La Crosse, WI 54601

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret M Grenisen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Areas of Expertise CMS Part B claims

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

53 services30 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54601 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.

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