DR. KREEGAN JOHN REIERSON M.D.
NPI 1457490500
Hospitalist in Stillwater, MN
About Dr. Kreegan John Reierson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KREEGAN JOHN REIERSON M.D. (NPI 1457490500) is an individual hospitalist provider in Stillwater, Minnesota, licensed in Minnesota (49356) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Lakeview Memorial Hospital, and is a graduate of University Of Minnesota Medical School (2003).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Kreegan John Reierson M.d. 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
7Medicare enrollment records show Kreegan Reierson reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stillwater, MN 55082
- Reassigned Medicare billing, Minnesota enrollment
- 2,274 clinicians in this Medicare group
Hudson, WI 54016
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1396849303 (Wisconsin)
- 158 clinicians in this Medicare group
New Richmond, WI 54017
- Reassigned Medicare billing, Wisconsin enrollment
- 357 clinicians in this Medicare group
Saint Croix Falls, WI 54024
- Reassigned Medicare billing, Wisconsin enrollment
- 453 clinicians in this Medicare group
Amery, WI 54001
- Reassigned Medicare billing, Wisconsin enrollment
- 348 clinicians in this Medicare group
Hutchinson, MN 55350
- Reassigned Medicare billing, Minnesota enrollment
- 253 clinicians in this Medicare group
Olivia, MN 56277
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1629091871 (Minnesota)
- 125 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 4
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lakeview Memorial Hospital
Acute Care Hospitals · Stillwater, MNRegions Hospital
Acute Care Hospitals · Saint Paul, MNAmery Hospital & Clinic
Critical Access Hospitals · Amery, WIHudson Hospital
Critical Access Hospitals · Hudson, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55082 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 3
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.
STILLWATER, MN 55082
STILLWATER, MN 55082
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 Kreegan Reierson's NPI number?
The NPI number for Kreegan Reierson is 1457490500. It was assigned to this individual provider in the NPPES registry on February 5, 2007.
Where is Kreegan Reierson located?
Kreegan Reierson practices at 927 Churchill St W, Stillwater, MN 55082. The listed phone number is (651) 439-5330.
What is Kreegan Reierson's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Kreegan Reierson enrolled in Medicare?
Yes. Kreegan Reierson 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 Kreegan Reierson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kreegan Reierson reassigns Medicare benefits to 7 organizations: Group Health, Inc. (Stillwater, MN), Hudson Hospital, Inc. (Hudson, WI), Westfields Hospital, Inc. (New Richmond, WI), St. Croix Regional Medical Center (Saint Croix Falls, WI), Amery Regional Medical Center, Inc. (Amery, WI) and 2 more organizations, listed in the Medicare section above. 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 Kreegan Reierson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kreegan Reierson accept?
Health plans from Anthem Blue Cross and Blue Shield and Medica list Kreegan Reierson 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 Kreegan Reierson affiliated with any hospitals?
According to CMS data, Kreegan Reierson is affiliated with Lakeview Memorial Hospital, Regions Hospital, Amery Hospital & Clinic and Hudson Hospital.
When was this NPI record last updated?
The NPPES record for Kreegan Reierson was last updated on December 18, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Kreegan John Reierson, M.D. · NPI 1457490500
Hospitalist physician in Stillwater, Minnesota. Individual provider, active in the CMS NPPES registry since February 5, 2007.
## Identity
- **NPI:** 1457490500 (Entity type: Individual)
- **Enumerated:** February 5, 2007
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 49356 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 927 CHURCHILL ST W, Stillwater, MN 55082-6605
- **Phone:** (651) 439-5330 · **Fax:** (651) 430-4528
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Group Health, Inc. (NPI 1578932943, Stillwater, MN); Hudson Hospital, Inc. (NPI 1255532875, Hudson, WI); Westfields Hospital, Inc. (NPI 1881640183, New Richmond, WI); St. Croix Regional Medical Center (NPI 1043240922, Saint Croix Falls, WI); Amery Regional Medical Center, Inc. (NPI 1093763518, Amery, WI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2003
## Record status
- **NPPES last updated:** December 18, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1457490500) · Data from the CMS NPPES public registry.