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William Hasler, MD

Dr. Hasler is a gastroenterologist in the Ann Arbor area. He is affiliated with University of Michigan Health System.
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Conditions treated

Tap to see related services for each condition and more details about our calculations.

Top 25%
34k doctors
Top 15%
34k doctors
Top 5%
17k doctors
Dr. Hasler saw more digestive tract conditions patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
6.7k doctors
Top 15%
6.7k doctors
Top 5%
3.3k doctors
Dr. Hasler saw more benign polyps patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
1.2k doctors
Top 15%
1.2k doctors
Top 5%
589 doctors
Dr. Hasler saw more delayed gastric emptying (gastroparesis) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
805 doctors
Top 15%
806 doctors
Top 5%
402 doctors
Dr. Hasler saw scleroderma patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
40k doctors
Top 15%
40k doctors
Top 5%
20k doctors
Dr. Hasler saw more pain patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
15k doctors
Top 15%
15k doctors
Top 5%
7.7k doctors
Dr. Hasler saw more constipation patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
3.7k doctors
Top 15%
3.7k doctors
Top 5%
1.9k doctors
Dr. Hasler saw more colon polyps patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
14k doctors
Top 15%
14k doctors
Top 5%
6.9k doctors
Dr. Hasler saw more diarrhea patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
4.1k doctors
Top 15%
4.1k doctors
Top 5%
2.0k doctors
Dr. Hasler saw more gas patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
15k doctors
Top 15%
15k doctors
Top 5%
7.7k doctors
Dr. Hasler saw more hemorrhage patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
4.9k doctors
Top 15%
4.9k doctors
Top 5%
2.4k doctors
Dr. Hasler saw more irritable bowel syndrome (IBS) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
22k doctors
Top 15%
22k doctors
Top 5%
11k doctors
Dr. Hasler saw more acid reflux patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
6.9k doctors
Top 15%
6.9k doctors
Top 5%
3.5k doctors
Dr. Hasler saw malnutrition patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
26k doctors
Top 15%
26k doctors
Top 5%
13k doctors
Dr. Hasler saw more anemia patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
662 doctors
Top 15%
662 doctors
Top 5%
330 doctors
Dr. Hasler saw lactose intolerance patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
38k doctors
Top 15%
38k doctors
Top 5%
19k doctors
Dr. Hasler saw cardiovascular disease (CVD) patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
20k doctors
Top 15%
20k doctors
Top 5%
10k doctors
Dr. Hasler saw more peripheral vascular disease (PVD) patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
36k doctors
Top 15%
36k doctors
Top 5%
18k doctors
Dr. Hasler saw vascular disease patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
5.5k doctors
Top 15%
5.5k doctors
Top 5%
2.7k doctors
Dr. Hasler saw more bowel obstruction patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
2.1k doctors
Top 15%
2.1k doctors
Top 5%
1.1k doctors
Dr. Hasler saw more indigestion patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
849 doctors
Top 15%
848 doctors
Top 5%
424 doctors
Dr. Hasler saw esophageal cancer patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
1.2k doctors
Top 15%
1.2k doctors
Top 5%
618 doctors
Dr. Hasler saw more stomach ulcer patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
4.4k doctors
Top 15%
4.4k doctors
Top 5%
2.2k doctors
Dr. Hasler saw diverticulosis patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
13k doctors
Top 15%
13k doctors
Top 5%
6.6k doctors
Dr. Hasler saw more inflammatory bowel disease (IBD) patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
34k doctors
Top 15%
34k doctors
Top 5%
17k doctors
Dr. Hasler saw diabetes patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
1.0k doctors
Top 15%
1.0k doctors
Top 5%
505 doctors
Dr. Hasler saw anal fissure patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
794 doctors
Top 15%
793 doctors
Top 5%
396 doctors
Dr. Hasler saw fecal incontinence patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
17k doctors
Top 15%
17k doctors
Top 5%
8.5k doctors
Dr. Hasler saw more liver condition patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
11k doctors
Top 15%
11k doctors
Top 5%
5.4k doctors
Dr. Hasler saw more hernia patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

Related services provided

Top 25%
2.9k doctors
Top 15%
2.9k doctors
Top 5%
1.4k doctors
Dr. Hasler saw C. diff colitis patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Locations

Dr. Hasler sees patients and can be reached at the following location.

University of Michigan Health System
1500 E Medical Center Dr
Ann Arbor, MI 48109
1.1 miles away

Reviews

Credentials
  • Perelman School of Medicine at the University of Pennsylvania
    MEDICAL EDUCATION, 1983

Specializations

    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine
    3. Gastroenterology
    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine

Hospital affiliations

Dr. Hasler is able to admit and treat patients at the following hospitals.

  • University of Michigan Health System
    A
    Hospital safety grade (Fall 2019)

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arkansas Blue Cross and Blue Shield
  • Assurant Health
  • Aultcare
  • AvMed
  • Banner Health
  • Beacon Health Strategies
  • Blue Cross Blue Shield of Arizona
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Alabama
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Illinois
  • Blue Cross and Blue Shield of Kansas
  • Blue Cross and Blue Shield of Kansas City
  • Blue Cross and Blue Shield of Louisiana
  • Blue Cross and Blue Shield of Minnesota
  • Blue Cross and Blue Shield of Mississippi
  • Blue Cross and Blue Shield of Montana
  • Blue Cross and Blue Shield of Nebraska
  • Blue Cross and Blue Shield of New Mexico
  • Blue Cross and Blue Shield of North Dakota
  • Blue Cross and Blue Shield of Oklahoma
  • Blue Cross and Blue Shield of Rhode Island
  • Blue Cross and Blue Shield of Texas
  • Blue Cross and Blue Shield of Vermont
  • Blue Cross and Blue Shield of Wyoming
  • Blue Cross of Idaho
  • Blue Shield of California
  • BlueCross BlueShield of South Carolina
  • BlueCross BlueShield of Tennessee
  • Capital District Physicians Health Plan
  • Capital Health Plan
  • CareFirst BlueCross BlueShield
  • Chinese Community Health Plan
  • Cigna
  • Community Health Options
  • CommunityCare
  • CoreSource
  • Coventry Health Care
  • Cross and Blue Shield of North Carolina
  • Dean Health Plan
  • EmblemHealth
  • Evergreen Health Cooperative
  • Fallon Health
  • First Choice Health
  • FirstCare Health Plans
  • FirstCarolinaCare
  • FrontPath Health Coalition
  • Geisinger Health Plan
  • Group Health Cooperative
  • Group Health Cooperative of South Central Wisconsin
  • Harvard Pilgrim Health Care
  • Hawaii Medical Service Association
  • Health Alliance
  • Health Alliance Plan of Michigan
  • Health First
  • Health Net
  • Health New England
  • HealthCare Partners
  • HealthNow New York
  • HealthPartners
  • HealthPlus
  • HealthSCOPE Benefits
  • HealthSmart
  • Highmark Blue Cross Blue Shield
  • Hill Physicians
  • Hometown Health
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • Indiana University Health Plan
  • Lifetime Healthcare
  • MVP Health Care
  • Magellan Health
  • MagnaCare
  • Mayo Clinic Health Solutions
  • MedCost
  • Medica
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • Midlands Choice
  • Moda Health
  • MultiPlan
  • Neighborhood Health Plan
  • Ohio PPO Connect
  • Optima Health
  • Oregons Health COOP
  • PacificSource
  • Paramount
  • Physicians Health plan
  • Pomco
  • PreferredOne
  • Premera Blue Cross
  • Presbyterian Health Plan
  • Priority Health
  • Providence Health Plan
  • Regence Blue Cross Blue Shield
  • Rocky Mountain Health Plans
  • Security Health Plan
  • SelectHealth
  • Southeastern Indiana Health Organization
  • SummaCare
  • SynerMed
  • TRICARE
  • The Health Plan
  • Tufts Health Plan
  • UPMC Health Plan
  • United Healthcare
  • Unity Health Insurance
  • ValueOptions
  • Viva Health
  • WPS Health Insurance
  • Wellmark Blue Cross and Blue Shield