MACKINAC STRAITS HEALTH SYSTEM INC
NPI 1124283502
General Acute Care Hospital - Critical Access in Saint Ignace, MI
About Mackinac Straits Health System Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MACKINAC STRAITS HEALTH SYSTEM INC (NPI 1124283502), doing business as Mackinac Straits Hospital And Health Center, is a healthcare organization registered as a critical access in Saint Ignace, Michigan and active in the NPI registry since July 2008. The organization holds a CLIA Waiver certificate valid through January 27, 2028, maintains 5 additional practice locations, and lists Karen Louise Cheeseman, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Locations 5
Other Identifiers 3
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mackinac Straits Health System Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
60Medicare enrollment records show 60 clinicians reassign Medicare billing to Mackinac Straits Health System Inc, which bills Medicare for the services they deliver. Of these, 13 practice at this address and 21 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 12
Nearest to this location (20)
See all 60Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 23D1107439
Mackinac Straits Health System · Mackinaw City, MIFrequently 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 Mackinac Straits Health System Inc's NPI number?
The NPI number for Mackinac Straits Health System Inc is 1124283502. It was assigned to this organization in the NPPES registry on July 24, 2008. The provider is doing business as Mackinac Straits Hospital and Health Center.
Where is Mackinac Straits Health System Inc located?
Mackinac Straits Health System Inc is located at 1140 N State St, Saint Ignace, MI 49781. The listed phone number is (906) 643-8585.
What is Mackinac Straits Health System Inc's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital, specializing in Critical Access, with taxonomy code 282NC0060X.
Is Mackinac Straits Health System Inc enrolled in Medicare?
Yes. Mackinac Straits Health System Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mackinac Straits Health System Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 60 clinicians in 12 Medicare specialties reassign their Medicare billing to Mackinac Straits Health System Inc. A 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 the clinician's services. The largest specialties are Nurse Practitioner (13), Emergency Medicine (11) and Family Practice (11). Of these, 13 practice at this address and 21 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Mackinac Straits Health System Inc hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 23D1107439) is associated with this NPI, valid through January 27, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Mackinac Straits Health System Inc 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 Mackinac Straits Health System Inc 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.
When was this NPI record last updated?
The NPPES record for Mackinac Straits Health System Inc was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mackinac Straits Health System Inc · NPI 1124283502
Critical Access organization in Saint Ignace, Michigan. Organization record, active in the CMS NPPES registry since July 24, 2008.
## Identity
- **NPI:** 1124283502 (Entity type: Organization)
- **Enumerated:** July 24, 2008
- **Primary specialty:** General Acute Care Hospital - Critical Access · taxonomy 282NC0060X
- **Also known as:** Mackinac Straits Hospital and Health Center (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Karen Cheeseman, CEO
## Practice location
- **Address:** 1140 N STATE ST, Saint Ignace, MI 49781-1048
- **Phone:** (906) 643-8585 · **Fax:** (906) 643-0373
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 60 clinicians in 12 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (13), Emergency Medicine (11), Family Practice (11); 13 practice at this address and 21 within 10 miles; [full list](https://npiprofile.com/npi/1124283502/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 405171127 (MI); Other 00223 (MI); Medicaid 301555851 (MI)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1124283502) · Data from the CMS NPPES public registry.