William Decker, DO
5.0(20 reviews)
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William Decker, DO
Internal Medicine Physician - Pulmonary Disease, Internal Medicine Physician - Sleep Medicine

Biography

William Decker, DO is a Internal Medicine Physician - Pulmonary Disease, Internal Medicine Physician - Sleep Medicine practicing in Adrian, MI

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Featured Review See More Reviews

Doctor was attentive and caring.…

Anonymous

Summary

Provider Training

UniversityDegreeFocusGraduated
Des Moines University College of Osteopathic Medicine and Health SciencesOther Degree1985
Des Moines University College of Osteopathic MedicineMedical Degree1985

InstitutionFocusYear
Residency - St Johns Health Sys/Oakland Hospital, Pulmonary Diseases; St Johns Health Sys/Oakland Hospital, Internal Medicine; St Johns Health Sys/Oakland Hospital, Flexible Or Transitional YearNot Specified
Residency - LECOMT/St John's Episcopal Hospital Program Not Specified

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Provider Profile 0

Specialties

Languages Spoken
English
Medical Specialties
  • Internal Medicine Physician - Sub-Specialty: Pulmonary Disease
  • Internal Medicine Physician - Sub-Specialty: Sleep Medicine

Years In Practice: 34 (started in 1992)

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 20
Most Recent Review: 09/18/2026
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Office & Staff Evaluation 5.0

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere 5.0
Handling of Billing Matters Not rated
Average Wait Time Less than 5 minutes

Provider Evaluation 5.0

Accuracy of Diagnosis 5.0
Listening Skills 5.0
Clear Explanations 5.0
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Verified Patient

“Doctor was attentive and caring....”

Doctor was attentive and caring.

Anonymous 09/18/2026
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Verified Patient

“I love Dr Decker. He is a fantas...”

I love Dr Decker. He is a fantastic listener.

Anonymous 06/16/2026
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Verified Patient

“Dr Decker was very helpful in ex...”

Dr Decker was very helpful in explaining how to use the medication that I had been prescribed. He was very one in one and didn't pressure me in making any decisions.

Anonymous 05/28/2026
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Verified Patient

“I'd recommend all my friends to ...”

I'd recommend all my friends to Dr. Decker

Anonymous 04/19/2026
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Verified Patient

“Good...”

Good

Anonymous 03/25/2026
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Verified Patient

“Dr. Decker has always shown more...”

Dr. Decker has always shown more concern for my health than most

Anonymous 07/22/2026
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Verified Patient

“Very good doctor...”

Very good doctor

Anonymous 06/02/2026
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Verified Patient

“So far, I have no problems with ...”

So far, I have no problems with any of my doctors nurses. I get the best treatment when I go there every time I go.

Anonymous 05/08/2026
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Verified Patient

“I had a really good experience....”

I had a really good experience.

Anonymous 04/08/2026
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Verified Patient

“Dr. Decker awesome dedicated wel...”

Dr. Decker awesome dedicated well informed physician

Anonymous 02/12/2026
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Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    William Decker, DO has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    William Decker, DO has not yet specified the insurance plans he accepts.