MICHAEL JOHN KASSING MD
NPI 1699801712
Obstetrics & Gynecology in Duluth, MN
About Michael John Kassing Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL JOHN KASSING MD (NPI 1699801712) is an individual obstetrics & gynecology provider in Duluth, Minnesota, licensed in Minnesota (19445) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Essentia Health St Mary's Medical Center, and is a graduate of University Of Minnesota Medical School (2006).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Michael John Kassing Md 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
4Medicare enrollment records show Michael Kassing reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Duluth, MN 55805
- Reassigned Medicare billing, Minnesota enrollment
- 1,460 clinicians in this Medicare group
Superior, WI 54880
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: St Marys Hospital Of Superior
- 381 clinicians in this Medicare group
Moose Lake, MN 55767
- Reassigned Medicare billing, Minnesota enrollment
- 213 clinicians in this Medicare group
Virginia, MN 55792
- Reassigned Medicare billing, Minnesota enrollment
- 171 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 2
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Essentia Health St Mary's Medical Center
Acute Care Hospitals · Duluth, MNEssentia Health Duluth
Acute Care Hospitals · Duluth, MNSt Marys Hospital Superior
Critical Access Hospitals · Superior, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55805 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.
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 Michael Kassing's NPI number?
The NPI number for Michael Kassing is 1699801712. It was assigned to this individual provider in the NPPES registry on February 25, 2007.
Where is Michael Kassing located?
Michael Kassing practices at 400 E 3rd St Essentia Health Duluth Clinic, Duluth, MN 55805. The listed phone number is (218) 786-3800.
What is Michael Kassing's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Michael Kassing enrolled in Medicare?
Yes. Michael Kassing 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 Michael Kassing's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Kassing reassigns Medicare benefits to 4 organizations: The Duluth Clinic, Ltd (Duluth, MN), St. Mary's Hospital Of Superior (Superior, WI), Essentia Health Moose Lake (Moose Lake, MN) and Essentia Health Virginia, LLC (Virginia, 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 Michael Kassing's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Kassing accept?
Health plans from HealthPartners, Sanford Health Plan and Security Health Plan list Michael Kassing 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 Michael Kassing affiliated with any hospitals?
According to CMS data, Michael Kassing is affiliated with Essentia Health St Mary's Medical Center, Essentia Health Duluth and St Marys Hospital Superior.
When was this NPI record last updated?
The NPPES record for Michael Kassing was last updated on May 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Michael John Kassing, MD · NPI 1699801712
Obstetrics & Gynecology physician in Duluth, Minnesota. Individual provider, active in the CMS NPPES registry since February 25, 2007.
## Identity
- **NPI:** 1699801712 (Entity type: Individual)
- **Enumerated:** February 25, 2007
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 19445 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 E 3RD ST, ESSENTIA HEALTH DULUTH CLINIC, Duluth, MN 55805-1951
- **Phone:** (218) 786-3800
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): The Duluth Clinic, Ltd (NPI 1245278209, Duluth, MN); St. Mary's Hospital Of Superior (NPI 1083657886, Superior, WI); Essentia Health Moose Lake (NPI 1154959880, Moose Lake, MN); Essentia Health Virginia, LLC (NPI 1083617120, Virginia, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2006
## Record status
- **NPPES last updated:** May 27, 2011
- **Other identifiers:** Medicaid 1699801712 (MN); Medicare PIN 160003220 (MN)
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Source: [NPI Profile](https://npiprofile.com/npi/1699801712) · Data from the CMS NPPES public registry.