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Dr. William Hasler, MD

Dr. William Hasler, MD

Age 64 Gastroenterology M
(9) 9 reviews

Telehealth available

Accepting New Patients


Dr. William Hasler, MD is a gastroenterology specialist in Ann Arbor, MI. Dr. Hasler completed a residency at University of Michigan Hospitals. He currently practices at Michigan Medicine and is affiliated with Bronson Methodist Hospital. He accepts multiple insurance plans. Dr. Hasler is board certified in Gastroenterology.


  • University of Michigan Hospitals, Fellowship Hospital — 1989
  • University of Michigan Hospitals, Residency Hospital — 1986
  • University of Michigan Hospitals, Internship Hospital — 1984
  • University Of Pennsylvania School Of Medicine, Medical School — 1983

Insurance Accepted

  • Aetna
  • Anthem
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • MultiPlan
  • Priority Health

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  1. Practice

    1. 1
      Michigan Medicine
      1500 E Medical Center Dr, Ann Arbor, MI 48109 Existing Patients: (734) 647-5944

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I have seen Dr Hassler a few times and he is amazing. Takes time with his patients and very knowledgeable about his field. He has helped me a lot and I feel Does what is is my very best interest to help me get better.
— Mar 16, 2019
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Dr. William Hasler, MD
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Frequently Asked Questions

Dr. Hasler frequently treats Gastroparesis, Constipation, and Nausea.  

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Hospital Affiliations

  • Bronson Methodist Hospital
  • University Hospital - University of Michigan