ContactUs

OUR LOCATIONS

Quartz is located at 3190 Gundersen Drive in Onalaska, Wisconsin, just past the Onalaska Gundersen Clinic. You can access driving directions here. You can meet with a customer service representative Monday through Friday from 8 a.m. to 4:30 p.m. at the Onalaska location. 

For assistance in a language other than English, call Customer Service. For people who are deaf, hard of hearing, or speech impaired, please call TTY/TDD 711 or toll free (800) 877-8973. Quartz does not discriminate on the basis of race, color, national origin, disability, age, sex, gender identity, sexual orientation, or health status in the administration of the plan, including enrollment and benefit determinations.

EMPLOYMENT

Interested in career opportunities? Quartz provides management and administrative services for Gundersen Health Plan. For more details, please go to Career Opportunities.

Translation Information

Interpreter services are provided free of charge to you.

English – For help to translate or understand this, please call 1-800-897-1923 or 608-775-8007. For people who are deaf, hard of hearing or speech impaired, please call TTY/TDD 711 or toll free (800) 877-8973, or you may call through a video relay service company of your choice.

To view this translation information in Spanish, Hmong, German, Chinese, French, Vietnamese, Arabic, Russian, Laotian, Hindi, Korean, Tagaolg, Pennsylvania Dutch, Amharic or Serbocroatian, click here.

  

CALL

  • Employer Group Plans
    • (608) 881-8271 or (800) 897-1923 
  • BadgerCare Plus
    • (800) 362-3310
  • Marketplace Plans 
    • GundersenOne:
      • (608) 881-8278 or (855) 685-6404
    • Employer Group Plans:
      • (608) 881-8272 or (855) 459-8076
  • Senior Choice 
    • (800) 362-3310
    • Senior Preferred
      • (800) 362-3310
      • Employers and Brokers
        • (608) 881-8242 or (866) 491-1335

      TTY/TDD - For people who are deaf, hard of hearing or speech impaired, please call TTY/TDD 711 or toll free (800) 877-8973 or you may call through a video relay service company of your choice.


      OFFICE LOCATION & HOURS

      Monday through Friday from 8 a.m. to 5 p.m.

      3190 Gundersen Drive, Onalaska, Wisconsin


      MAILING ADDRESS

      Gundersen Health Plan

      Attention: Customer Service

      1900 South Avenue - NCA2-01

      La Crosse, WI 54601


      EMAIL

      We care about keeping your information private. Since email is not always secure, we prefer you use email to ask general questions only.

      Email us at customerservice@quartzbenefits.com for general questions only.

      To speak with Customer Service about your policy or personal health information, please contact us by phone or login to our secure member portal to access the confidential “ask a question” service. Members who login to our secure member portal can also view explanation of benefit (EOB) statements and other confidential member information. Please visit our home page to create an account. Thank you!


      FAX

      (608) 775-8091