CASSIE THIESSE FNP-C
NPI 1316699119
Nurse Practitioner in Saint Joseph, MI
About Cassie Thiesse Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CASSIE THIESSE FNP-C (NPI 1316699119) is an individual nurse practitioner in Saint Joseph, Michigan, licensed in Michigan (4704326088) and active in the NPI registry since January 2022. She is enrolled in Medicare PECOS, is affiliated with Lakeland Hospital, St Joseph, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 4
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
Cassie Thiesse Fnp-c 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
2Medicare enrollment records show Cassie Thiesse reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Joseph, MI 49085
- Reassigned Medicare billing, Michigan enrollment
- 249 clinicians in this Medicare group
Saint Joseph, MI 49085
- Reassigned Medicare billing, Michigan enrollment
- 724 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 7
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.
Lakeland Hospital, St Joseph
Acute Care Hospitals · St Joseph, MICorewell Health Watervliet Hospital
Acute Care Hospitals · Watervliet, MIBronson South Haven Hospital
Acute Care Hospitals · South Haven, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49085 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.
SAINT JOSEPH, MI 49085
SAINT JOSEPH, MI 49085
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 Cassie Thiesse's NPI number?
The NPI number for Cassie Thiesse is 1316699119. It was assigned to this individual provider in the NPPES registry on January 22, 2022.
Where is Cassie Thiesse located?
Cassie Thiesse practices at 1234 Napier Ave, Saint Joseph, MI 49085. The listed phone number is (269) 983-3455.
What is Cassie Thiesse's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Cassie Thiesse enrolled in Medicare?
Yes. Cassie Thiesse 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 Cassie Thiesse's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cassie Thiesse reassigns Medicare benefits to 2 organizations: Lakeland Hospitals At Niles And St Joseph, Inc (Saint Joseph, MI) and Lakeland Medical Practices (Saint Joseph, MI). 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 Cassie Thiesse's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cassie Thiesse accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Cassie Thiesse 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 Cassie Thiesse affiliated with any hospitals?
According to CMS data, Cassie Thiesse is affiliated with Lakeland Hospital, St Joseph, Corewell Health Watervliet Hospital and Bronson South Haven Hospital.
When was this NPI record last updated?
The NPPES record for Cassie Thiesse was last updated on January 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Cassie Thiesse, FNP-C · NPI 1316699119
Nurse Practitioner physician in Saint Joseph, Michigan. Individual provider, active in the CMS NPPES registry since January 22, 2022.
## Identity
- **NPI:** 1316699119 (Entity type: Individual)
- **Enumerated:** January 22, 2022
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 4704326088 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1234 NAPIER AVE, Saint Joseph, MI 49085-2112
- **Phone:** (269) 983-3455
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Lakeland Hospitals At Niles And St Joseph, Inc (NPI 1598305641, Saint Joseph, MI); Lakeland Medical Practices (NPI 1538397120, Saint Joseph, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** January 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1316699119) · Data from the CMS NPPES public registry.