William C. Bayer, MD

William C. Bayer, MD

4.9 
370 ratings  Read Reviews
Northwestern Medicine Regional Medical Group

Primary Specialty

Endocrinology

Insurance

Insurance plans are subject to change. View insurance plans accepted at each hospital and by each NMHC physician group.
Accepting New Patients

Education

Medical Education:
Loyola University Stritch School of Medicine - 1986
Residency:
Loyola University Medical Center - 1989
Fellowships:
Loyola University Medical Center - 1991

Board Certifications

  • American Board of Internal Medicine (Certified)
  • American Board of Internal Medicine - Endocrinology, Diabetes & Metabolism (Certified)

Practice Groups and Affiliations

Medical Group:
Northwestern Medicine Regional Medical Group
Physician Category:
Northwestern Medicine Physician Network
Northwestern Medicine Regional Medical Group
On Medical Staff At:
Central DuPage Hospital

Ratings and Reviews

At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.

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Overall rating

4.9
4.9 
370 Ratings
  • Friendly & Courteous
    4.9
  • Will Recommend to Others
    4.9
  • Clear Explanations
    4.9
  • Shows Concern
    4.9
  • Includes You In Decisions
    4.8
  • Explains Medications
    4.8
  • Follow-Up Instructions
    4.8
  • Easy to Understand
    4.9
  • Time Spent With Patient
    4.8
  • Confidence in Doctor
    4.9

Reviews from Patients

76 Reviews
October 26, 2019

Dr Bayer is an excellent physician, very knowledgeable, concerned and very present with his patients.

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October 26, 2019

Dr Bayer answered my questions and made me as comfortable as possible

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October 22, 2019

I am very satisfied !

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October 22, 2019

Dr Bayer is always friendly and caring. Good experiences.

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October 06, 2019

Another doctor recommended Dr Bayer, & I then looked up endocrinologists online & chose Dr Bayer as the best doctor for me. I am very happy to have him as my doctor! He was wonderfully easy to talk with & helpful & reassuring!

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October 05, 2019

I've appreciated Dr. Bayer's care for many years.

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September 16, 2019

I have been seeing *Dr. Bayer for 3 1/2 years and I have had an AMAZING improvement - my diabetes is in remission, and all test levels are normal or near normal. My visits are always productive and pleasant, with excellent recommendations for future care, as well as warm personal concern for me. This office is an 80- mile round - trip for me, and well worth it!

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September 13, 2019

He has been my doctor for a long time!! I drive approx. 40 miles each way just to see him. Great doctor!

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August 25, 2019

excellent doctor

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August 03, 2019

Dr. Bayer is a wonderful Doctor!!! he ALWAYS takes the time to listen to my concerns and or questions. His bed side manner is exceptional and he is very personable. He never talks above me using medical terms that I don't understand . he is a very patient and accommodating Doctor.. If there was a higher rating than 5 he would have received that rating

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July 22, 2019

*Dr. Bayer answered my questions & helped me understand choices.

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July 19, 2019

Enough time given.

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July 14, 2019

Dr Bayer is professional, thorough yet so friendly/approachable. He is a wonderful doctor - and his team is wonderful as well.

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July 12, 2019

No complaints

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July 11, 2019

*Dr. Bayer and his nurse are extremely caring and make me feel really good! So glad I have him for my dr.!

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June 21, 2019

Love the care provided by Dr. Bayer and his MA. Dr.Bayer includes you in his assessment and treatment for Diabetes.

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June 14, 2019

Dr. Bayer is wonderful! He is very thorough, efficient, and kind.

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June 13, 2019

Dr. Bayer puts me at ease and listens.

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June 13, 2019

20 year patient and very please with Dr Bayer

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June 03, 2019

thorough yet friendly! Excellent rapport.

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May 22, 2019

Good, nice manner and very knowledgeable, likeable.

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May 16, 2019

Dr Bayer is an outstanding physician in every way!

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May 15, 2019

I would recommend Dr. Bayer to anyone. He is very caring, very professional and the BEST. I travel 45-60 minutes to see him and he is worth it. He is awesome. I hope he will be practicing for a long time.

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May 05, 2019

I like that he discusses my treatment with me. he gives me a chance to ask questions and answers any concerns I have. I feel a part of my care, like we are working together managing my health.

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April 29, 2019

dr Bayer is one of the best doctors I've ever had as my wife has breast cancer and told him about 6 months ago last appointment which at this appointment he asked me how she was doing. he looks at the patient and the family to make sure ones well being overall

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April 23, 2019

Dr. Bayer is very knowledgeable and addressed all my concerns.

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April 22, 2019

I'm happy with the professional care given to me and I've shown progression in my on-going treatment

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March 30, 2019

Dr. Bayer is AWESOME!

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March 26, 2019

*Dr. Bayer is very kind, considerate and professional. Also very knowledgeable.

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February 28, 2019

I drive around 40 miles each way (80 mile round-trip) to see my doctor, and I intend to continue. I have had excellent results under his supervision, and in addition to losing about 55 lbs. in 18 months, my type II diabetes is nearly in remission. I could not be happier, and the visits are well worth any small inconvenience like distance.

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February 24, 2019

good

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February 14, 2019

Dr. Bayer is the paragon of Endocrinologists. I have seen him for over a decade and would recommend him without reservation.

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February 07, 2019

Dr. Bayer is an exceptional doctor. I have complete confidence in his judgment. I would recommend him without reservation. He doesn't see his patients as a problem to solve. He looks for interrelationships in conditions and views his patients in a holistic way.

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January 28, 2019

Dr. Wm. Bayer is the best!

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January 26, 2019

Dr. Bayer has great 'bed side manners' and explains things in a very simple understandable way. I am fortunate his is my doctor

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January 10, 2019

very good experience

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December 31, 2018

Dr. was helpful and friendly

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December 28, 2018

Absolutely LOVE *Dr. Bayer!

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December 18, 2018

Dr. Bayer is excellent as a doctor and a kind human being.

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December 17, 2018

Dr Bayer has been my endocrinologist for 20 years and he is always friendly, caring and most competent. I would never hesitate to recommend him to others.

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December 12, 2018

Dr. Bayer is awesome. I would not drive 45 minutes to an hour to see him if I did not feel he was excellent.

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November 30, 2018

The doctor took his time and truly showed that he cared about me as an individual.

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November 27, 2018

Great doctor. Explains well. Listens.

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November 27, 2018

although I had to wait for the Dr. , he still took the time for my visit, very thorough.

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November 21, 2018

Amazing and wonderful doctor.

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November 13, 2018

*Dr. Bayer is the best. Very thorough & very caring.

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November 05, 2018

OUTSTANDING MANY YEARS OF OUTSTANDING SERVICE.

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October 28, 2018

Dr. Bayer is great. I would recommend him and the NW Med team.

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October 18, 2018

Dr. Bayer is the best!!!! He has done wonders with me controlling my diabetes.

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September 23, 2018

I am very satisfied !!!!!!!!!

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August 24, 2018

I have had Dr. Bayer for over 14 yrs. and would not go to another endocrinologist.

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