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MACKINAC STRAITS HEALTH SYSTEM INC
NPI 1659868206
Clinic/Center - Rural Health in Cheboygan, MI

Active since April 19, 2018
920 S HURON ST, CHEBOYGAN, MI 49721(231) 597-8192(231) 597-8463 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 30, 2024, Jun 9, 2022, May 3, 2021 and 2 more (5 updates tracked since 2018).

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 1659868206), doing business as Rivertown Medical Clinic, is a healthcare organization registered as a rural health in Cheboygan, Michigan and active in the NPI registry since April 2018. The organization lists Sonja Sprague, Credentialing, as its authorized official.

NPPES Registry Identity

NPI1659868206
Entity TypeOrganization
Primary Taxonomy261QR1300X
Legal Business NameMACKINAC STRAITS HEALTH SYSTEM INC
Location Address920 S HURON STCheboygan, MI 49721-2267
Mailing Address1140 N State StSaint Ignace, MI 49781-1013
Phone(231) 597-8192
Fax(231) 597-8463
Organization SubpartYes
Authorized OfficialSonja SpragueCredentialing · (906) 643-0451
Enumeration DateApril 19, 2018
Last NPPES UpdateJune 9, 20265 updates tracked since enumeration
NPPES CertifiedJune 9, 2026
✔ NPI 1659868206 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Rural HealthAmbulatory Health Care Facilities
Taxonomy Code261QR1300X
Also ListedFamily MedicineTaxonomy 207Q00000X
920 S HURON ST, Cheboygan, MI 49721
Open in Google Maps ↗

Other Names 1

Doing Business AsRivertown Medical Clinic

Other Identifiers 1

Other238716Medicare

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 Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company.Insurance ›

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARA LYNN HAAPAPURO NP
Nurse Practitioner (Family)
920 S HURON ST
CHEBOYGAN, MI 49721
Cheboygan County (906) 643-8585
LEJA JACKSON INC
Family Medicine
920 S HURON ST
CHEBOYGAN, MI 49721
Cheboygan County (231) 597-8192
LORETTA M LEJA M.D.
Family Medicine
920 S HURON ST
CHEBOYGAN, MI 49721
Cheboygan County (231) 597-8192

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 Mackinac Straits Health System Inc's NPI number?

The NPI number for Mackinac Straits Health System Inc is 1659868206. It was assigned to this organization in the NPPES registry on April 19, 2018. The provider is doing business as Rivertown Medical Clinic.

Where is Mackinac Straits Health System Inc located?

Mackinac Straits Health System Inc is located at 920 S Huron St, Cheboygan, MI 49721. The listed phone number is (231) 597-8192.

What is Mackinac Straits Health System Inc's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Rural Health, with taxonomy code 261QR1300X.

What insurance does Mackinac Straits Health System Inc accept?

Health plans from Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company 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 June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.