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William M. Ehrhardt

William M. Ehrhardt, MD

Schedule an Appointment

To schedule an appointment with William M. Ehrhardt please call 608-260-3405.

Accepting new patients

  • DHS Provider


Year Joined Dean Clinic:


  • Gastroenterology

Board Certification

  • Gastroenterology

Medical Interests

  • Colon cancer prevention
  • Esophageal dilation
  • Gastrostomy tube placement
  • GI bleeding
  • Inflammatory bowel disease
  • Liver disease
  • Stent placement and ERCP
  • Swallowing disorders
  • Upper and lower endoscopy including polypectomy


  • English

Dean Health Plan Product Type

  • Administrative Services/ASO
  • Badgercare Plus/Medicaid
  • Commercial HMO/POS Insurance (Group Or Individual Coverage)
  • Dean Focus
  • Medicare Advantage
  • Medicare Gold
  • Medicare Select
  • PPO


College and University

University of Wisconsin Medical School, MD


University of Wisconsin, Madison, Wisconsin, Internal Medicine


University of Wisconsin, Madison, Wisconsin, Gastroenterology and Hepatology


Oregon Health Sciences University, Portland, Oregon, Internal Medicine


In addition to being a network provider for all Dean Health Plan insurance products listed above, this provider may also be considered in-network with various health insurance products.
- If Commercial HMO/POS Insurance (Group or Individual Coverage) appears under Dean Health Plan Product Type, this indicates this provider is participating in the Dean Health Plan Marketplace ( HMO plans.
- If Dean Focus appears under Dean Health Plan Product Type, this indicates this provider is participating in the Dean Health Plan Marketplace ( EPO plans.
- Dean providers are also participating providers for Medicare Part B, Wisconsin Medicaid, and other government payers. We encourage you to contact your insurance carrier to determine your coverage.

Professional Activities

American Gastroenterological Association, American Society for Gastrointestinal Endoscopy

Personal Interests

Family, traveling, running, biking

Hospital Affiliations


We encourage you to see your pediatrician, family medicine or internal medicine provider about new healthcare concerns. This provider will then direct you to the appropriate specialty care, as needed.

Office Information



DeanCare Gold (Cost) is an HMO plan with a Medicare contract.  Enrollment in DeanCare Gold depends on contract renewal.

H5264_WEB15v1_CMS Pending

We're Here to Help

Customer Care

To schedule an appointment with a provider, please call the clinic directly.

If you have any questions contact Dean Health Plan's Customer Care Center at (800) 279-1301.

Referring Physicians

Call DeanDirect to make a referral - (888) 302-3326

Also, visit ReferLink - a resource tailored to you.

Directory Resources

Glossary of Terms

Check Certification Status
with the American Board of Medical Specialties