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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MACKINAC STRAITS HEALTH SYSTEM INC
NPI 1124283502
General Acute Care Hospital - Critical Access in Saint Ignace, MI

Active since July 24, 2008CLIA 23D1107439 · Waiver
1140 N STATE ST, SAINT IGNACE, MI 49781(906) 643-8585(906) 643-0373 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 13, 2026, Jan 28, 2026, Feb 11, 2020 and 1 more (4 updates tracked since 2020).

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

NPI1124283502
Entity TypeOrganization
Primary Taxonomy282NC0060X
Legal Business NameMACKINAC STRAITS HEALTH SYSTEM INC
Location Address1140 N STATE STSaint Ignace, MI 49781-1048
Mailing Address1140 N State StSaint Ignace, MI 49781-1013 · (906) 643-8585 · Fax (906) 643-0373
Phone(906) 643-8585
Fax(906) 643-0373
Organization SubpartNo
Authorized OfficialKaren Louise CheesemanCeo · (906) 643-0457
Enumeration DateJuly 24, 2008
Last NPPES UpdateJuly 13, 20264 updates tracked since enumeration
NPPES CertifiedJuly 13, 2026
✔ NPI 1124283502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyGeneral Acute Care Hospital · Critical AccessHospitals
Taxonomy Code282NC0060X
Also ListedEmergency MedicineTaxonomy 207P00000X
Also ListedFamily MedicineTaxonomy 207Q00000X
1140 N STATE ST, Saint Ignace, MI 49781
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Other Names 1

Doing Business AsMackinac Straits Hospital And Health Center

Secondary Practice Locations 5

Location 17474 Market StMackinac Island, MI 49757-9800 · Phone (906) 847-3582
Location 21140 N State StSaint Ignace, MI 49781-1048 · Phone (906) 643-8585
Location 3441 Souix AvePoint Aux Pin, MI 49775-5000 · Phone (231) 634-7147
Location 4920 S Huron StCheboygan, MI 49721-2267 · Phone (231) 597-8192
Location 514540 N Mackinaw HighwayMACKINAW CITY, MI 49701-9507 · Phone (231) 436-9900

Other Identifiers 3

Medicaid405171127MI
Other00223MI · Blue Cross
Medicaid301555851MI

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

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, MI
Active · expires Jan 27, 2028
CLIA Number23D1107439
Laboratory TypeRural Health Clinic
Certificate Effective DateJanuary 28, 2026
Certificate Expiration DateJanuary 27, 2028
Laboratory DirectorRoderick J. Baltzer
Laboratory Phone(231) 436-9900
Laboratory LocationMackinac Straits Health System14540 N Mackinaw Highway, Mackinaw City, MI 49701
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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.

MACKINAC STRAITS HEALTH SYSTEM INC
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8585
SAULT TRIBE OF CHIPPEWA INDIANS
Social Worker (Clinical)
1140 N STATE ST, SUITE 2805
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8689
LINDA DEY INHELDER RD
Dietitian, Registered
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8689
CARYN SUZANNE KOVAR PA-C
Physician Assistant
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8585
SAULT TRIBE OF CHIPPEWA INDIANS
Indian Health Service/Tribal/Urban Indian Health (I/T/U) Pharmacy
1140 N STATE ST, SUITE 2805
SAINT IGNACE, MI 49781
Mackinac County (906) 643-4996
TARA M WEIST NP
Nurse Practitioner (Family)
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8689
CHRISTOPHER JOHN GUNNELL M.D.
Family Medicine
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-8585
DR. ZACHARY ADRIAN BRIAN D.M.D.
Dentist (Dental Public Health)
1140 N STATE ST
SAINT IGNACE, MI 49781
Mackinac County (906) 643-4990

Frequently Asked Questions

What is MACKINAC STRAITS HEALTH SYSTEM INC's NPI number?

The NPI number assigned to this healthcare provider is 1124283502, enumerated as an "organization" on July 24, 2008.

Where is the provider located?

The provider is located at 1140 N STATE ST SAINT IGNACE, MI 49781 and the phone number is (906) 643-8585.

What is the provider's specialty?

General Acute Care Hospital with taxonomy code 282NC0060X and a focus in Critical Access.

What insurance does MACKINAC STRAITS HEALTH SYSTEM INC accept?

The provider might be accepting Accepts: Ambetter from Buckeye Health Plan, Ambetter from. Please consult your insurance carrier or call the provider to verify.