GRETCHEN LINDSEY FISCHER APRN-CNP
NPI 1558810705
Nurse Practitioner - Family in Mankato, MN
About Gretchen Lindsey Fischer Aprn-cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETCHEN LINDSEY FISCHER APRN-CNP (NPI 1558810705) is an individual family provider in Mankato, Minnesota, licensed in Minnesota (4846) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System - Mankato, and maintains a secondary practice location in Mankato.
NPPES Registry Identity
Specialties & Licenses
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
Gretchen Lindsey Fischer Aprn-cnp 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
3Medicare enrollment records show Gretchen Fischer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mankato, MN 56001
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1124035282 (Minnesota)
- 1,572 clinicians in this Medicare group
Mankato, MN 56001
- Reassigned Medicare billing, Minnesota enrollment
- 322 clinicians in this Medicare group
Fairmont, MN 56031
- Reassigned Medicare billing, Minnesota enrollment
- 806 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mayo Clinic Health System - Mankato
Acute Care Hospitals · Mankato, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 56001 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Gretchen Fischer's NPI number?
The NPI number for Gretchen Fischer is 1558810705. It was assigned to this individual provider in the NPPES registry on September 29, 2016.
Where is Gretchen Fischer located?
Gretchen Fischer practices at 1025 Marsh St, Mankato, MN 56001. The listed phone number is (507) 625-4031.
What is Gretchen Fischer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Gretchen Fischer enrolled in Medicare?
Yes. Gretchen Fischer 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 Gretchen Fischer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Fischer reassigns Medicare benefits to 3 organizations: Mayo Clinic Health System-Southwest Minnesota Region (Mankato, MN), Mankato Clinic Ltd (Mankato, MN) and Mayo Clinic Health System-Fairmont (Fairmont, MN). 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 Gretchen Fischer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gretchen Fischer accept?
Health plans from Sanford Health Plan list Gretchen Fischer 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 Gretchen Fischer affiliated with any hospitals?
According to CMS data, Gretchen Fischer is affiliated with Mayo Clinic Health System - Mankato.
When was this NPI record last updated?
The NPPES record for Gretchen Fischer was last updated on October 5, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Gretchen Lindsey Fischer, APRN-CNP · NPI 1558810705
Family physician in Mankato, Minnesota. Individual provider, active in the CMS NPPES registry since September 29, 2016.
## Identity
- **NPI:** 1558810705 (Entity type: Individual)
- **Enumerated:** September 29, 2016
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 4846 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1025 MARSH ST, Mankato, MN 56001-4752
- **Phone:** (507) 625-4031
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mayo Clinic Health System-Southwest Minnesota Region (NPI 1578545422, Mankato, MN); Mankato Clinic Ltd (NPI 1629044029, Mankato, MN); Mayo Clinic Health System-Fairmont (NPI 1366410862, Fairmont, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** October 5, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1558810705) · Data from the CMS NPPES public registry.