CARRIE MARGARET JOHNSON MD, PHD
NPI 1770288474
Emergency Medicine in La Crosse, WI
About Carrie Margaret Johnson Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CARRIE MARGARET JOHNSON MD, PHD (NPI 1770288474) is an individual emergency medicine provider in La Crosse, Wisconsin, licensed in Wisconsin (86755-20) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS, is affiliated with Maine General Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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
Carrie Margaret Johnson Md, Phd 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
5Medicare enrollment records show Carrie Johnson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,003 clinicians in this Medicare group
Rochester, MN 55905
- Reassigned Medicare billing, Minnesota enrollment
- 6,534 clinicians in this Medicare group
Red Wing, MN 55066
- Reassigned Medicare billing, Minnesota enrollment
- 1,571 clinicians in this Medicare group
Waseca, MN 56093
- Reassigned Medicare billing, Minnesota enrollment
- 1,572 clinicians in this Medicare group
Augusta, ME 04330
- Reassigned Medicare billing, Maine enrollment
- 978 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maine General Medical Center
Acute Care Hospitals · Augusta, MEMayo Clinic Health System In Red Wing
Acute Care Hospitals · Red Wing, MNMayo Clinic Health System-Franciscan Medical Center Inc
Acute Care Hospitals · La Crosse, WIPhysician 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.
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.
LA CROSSE, WI 54601
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 Carrie Johnson's NPI number?
The NPI number for Carrie Johnson is 1770288474. It was assigned to this individual provider in the NPPES registry on April 3, 2023.
Where is Carrie Johnson located?
Carrie Johnson practices at 800 West Ave S, La Crosse, WI 54601. The listed phone number is (608) 785-0940.
What is Carrie Johnson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Carrie Johnson enrolled in Medicare?
Yes. Carrie Johnson 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 Carrie Johnson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carrie Johnson reassigns Medicare benefits to 5 organizations: Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI), Mayo Clinic (Rochester, MN), Mayo Clinic Health System-Southeast Minnesota Region (Red Wing, MN), Mayo Clinic Health System-Southwest Minnesota Region (Waseca, MN) and Mainegeneral Medical Center (Augusta, ME). 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 Carrie Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Carrie Johnson accept?
Health plans from Medica list Carrie Johnson 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 Carrie Johnson affiliated with any hospitals?
According to CMS data, Carrie Johnson is affiliated with Maine General Medical Center, Mayo Clinic Health System In Red Wing and Mayo Clinic Health System-Franciscan Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Carrie Johnson was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 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.
# Carrie Margaret Johnson, MD, PHD · NPI 1770288474
Emergency Medicine physician in La Crosse, Wisconsin. Individual provider, active in the CMS NPPES registry since April 3, 2023.
## Identity
- **NPI:** 1770288474 (Entity type: Individual)
- **Enumerated:** April 3, 2023
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 86755-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 WEST AVE S, La Crosse, WI 54601-8806
- **Phone:** (608) 785-0940
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (NPI 1629056049, La Crosse, WI); Mayo Clinic (NPI 1114343860, Rochester, MN); Mayo Clinic Health System-Southeast Minnesota Region (NPI 1114453883, Red Wing, MN); Mayo Clinic Health System-Southwest Minnesota Region (NPI 1518494251, Waseca, MN); Mainegeneral Medical Center (NPI 1083949184, Augusta, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, class of 2023
## Record status
- **NPPES last updated:** September 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1770288474) · Data from the CMS NPPES public registry.