GREGORY MATTHEW PETERSON M.D.
NPI 1245467141
Emergency Medicine in Waconia, MN
About Gregory Matthew Peterson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY MATTHEW PETERSON M.D. (NPI 1245467141) is an individual emergency medicine provider in Waconia, Minnesota, licensed in Minnesota (55134) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Ridgeview Medical Center, and is a graduate of University Of Minnesota Medical School (2009).
NPPES Registry Identity
Specialties & Licenses
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
Gregory Matthew Peterson 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
3Medicare enrollment records show Gregory Peterson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Waconia, MN 55387
- Reassigned Medicare billing, Minnesota enrollment
- 581 clinicians in this Medicare group
Arlington, MN 55307
- Reassigned Medicare billing, Minnesota enrollment
- 229 clinicians in this Medicare group
Le Sueur, MN 56058
- Reassigned Medicare billing, Minnesota enrollment
- 201 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 3
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.
Ridgeview Medical Center
Acute Care Hospitals · Waconia, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55387 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.
WACONIA, MN 55387
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 Gregory Peterson's NPI number?
The NPI number for Gregory Peterson is 1245467141. It was assigned to this individual provider in the NPPES registry on June 18, 2009.
Where is Gregory Peterson located?
Gregory Peterson practices at 500 S Maple St Empac, Ridgeview Medical Center, Waconia, MN 55387. The listed phone number is (952) 442-2191.
What is Gregory Peterson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gregory Peterson enrolled in Medicare?
Yes. Gregory Peterson 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 Gregory Peterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Peterson reassigns Medicare benefits to 3 organizations: Ridgeview Medical Center (Waconia, MN), Sibley Medical Center (Arlington, MN) and Minnesota Valley Health Center Inc (Le Sueur, 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 Gregory Peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gregory Peterson affiliated with any hospitals?
According to CMS data, Gregory Peterson is affiliated with Ridgeview Medical Center.
When was this NPI record last updated?
The NPPES record for Gregory Peterson was last updated on August 8, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.