Cornerstone Insurance Group Polk

Welcome to Cornerstone Insurance Group in Polk. Polk is a village in Polk County, Nebraska and was platted in 1906 when Union Pacific officials established two towns, Polk and Hordville, on a branch line from Stromsburg to Central City. Polk is home to the local consolidated high school of High Plains Community Schools. The staff in Polk looks forward to serving your insurance needs.

Address:
190 North Main Street
PO Box 89
Polk, NE 68654
Phone: (402) 765-2191
Fax: (402) 765-3541
Hours:
Monday - Friday 8:00 am - 4:00 pm

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Meet our staff

Doug Burritt Cornerstone Insurance Group

Doug Burritt
Stromsburg Insurance Manager
[email protected]
(402) 764-2511

Doug grew up in rural Osceola, Nebraska and attended college at the University of Nebraska at Kearney. Doug began his insurance career in 2002, before joining Cornerstone Insurance Group in June of 2020. He currently holds his Property & Casualty, Life & Health and Crop insurance licenses and holds a AFIS (Agribusiness Farm Insurance Specialist) designation. Doug is an active Teammates Mentor. He enjoys coaching his kids and watching them participate in various activities. He and his wife, Kimberly, have three children, Elizabeth, Alexis and Layton.

Cheri Giannou Cornerstone Insurance Group

Cheri Giannou
Customer Service Agent
[email protected]
(402) 764-2511

Cheri grew up on a farm near Rising City and attended Northeast Community College. She has been in the insurance industry since joining Cornerstone Insurance Group in 2017. Cheri is licensed in Property & Casualty. She is involved with numerous local community organizations. Cheri and her husband John, have three grown children - Aaron & his wife Brooklyn, Nathan, and Amanda.

Gage Sinsel
Customer Service Agent
[email protected]
(402) 362-7477

Gage is a native of York, after graduating from York High School he attended the University of Nebraska-Lincoln. He began his career in insurance began in November of 2023 when he joined Cornerstone Insurance Group. Gage has obtained his Property & Casualty License. He also enjoys traveling, golfing, spending time with friends and family, as well as supporting the Nebraska Cornhuskers.

Derek DeMers
Customer Service Agent
[email protected]
Aurora (402) 694-0268 or Polk (402) 765-2191

Derek grew up in Hordville, Nebraska, and attended the University of Nebraska-Lincoln. He began working at Union Bank and Trust, where he helped manage employer-sponsored retirement accounts, before joining Cornerstone Insurance Group in January 2025. Derek is licensed in Property & Casualty. Derek and his wife, Margaret, moved to Aurora in 2022, and they recently welcomed their son, Karson, to the family. In his free time, Derek enjoys hunting, fishing, golfing, and smoking meats.