| 1948 Associated Hospital Services begins
doing business in South Dakota and marketing activities as Blue
Cross. 1956 South Dakota Medical Service
begins doing business in South Dakota as South Dakota Blue Shield.
1973 Associated Hospital Service,
Incorporated changes its name to Blue Cross of Western Iowa and
South Dakota.
1986 Blue Cross and Blue Shield of South
Dakota markets AWARE, the first managed care product in South
Dakota.
1987 First electronic submission of claims
to the Plan by South Dakota hospitals.
1989 Blue Cross of Western Iowa and South
Dakota, Blue Cross of Iowa and Blue Shield of Iowa merge to form
IASD Health Services.
1994 Blue Cross of South Dakota and South
Dakota Blue Shield's joint service agreement expires, putting the
Plans in competition with one another.
| 1996 |
- A new joint services operating agreement is reached between
Blue Cross of South Dakota and South Dakota Blue Shield.
- Blue Cross of South Dakota and South Dakota Blue Shield merge, creating
South Dakota Health Services Company d.b.a. "Blue Cross Blue Shield
of South Dakota."
- Blue Cross and Blue Shield of South Dakota first does business with
third-party administrator (TPA) subsidiary Administrative Medical Services,
Inc.
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| 1997 |
- The enterprise adopts the Wellmark brand, using the trade names Wellmark
Blue Cross and Blue Shield of Iowa and Wellmark Blue Cross and Blue Shield
of South Dakota.
- After the consolidation of several operating systems, Wellmark Blue
Cross and Blue Shield of South Dakota receives recognition from the Blue
Cross and Blue Shield Association as "Most Improved Plan" in
interplan services.
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