William Decker, DO
17 Patient Reviews

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

He has not yet shared a personalized biography with Doctor… Read more ›

Featured Review See More Reviews

I love Dr Decker. He is a fantastic listener.…

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 - LECOMT/St John's Episcopal Hospital Program Not Specified
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

Photos

Provider Profile 0Provider Profile 1

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
Number of Reviews: 17
Most Recent Review: 06/16/2026
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Office & Staff Evaluation

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

Provider Evaluation

Accuracy of Diagnosis
Listening Skills
Clear Explanations
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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

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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Verified Patient

Dr Deckers care was life changin...

Dr Deckers care was life changing!

Anonymous 01/04/2026
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Verified Patient

Very good doctor...

Very good doctor

Anonymous 06/02/2026
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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 is friendly and profe...

Dr, Decker is friendly and professional. He is very good at conversing with me to understand my problems and determine the best treatment. He also checked my cpap machine and let me know that I am doing well with it. He is easy to talk to.

Anonymous 02/11/2026
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Verified Patient

Dr. Decker is a very good doctor...

Dr. Decker is a very good doctor. Treats you like family

Anonymous 12/05/2025
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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.
     

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