Dr. William Giesen, MD

Dr. William Giesen, MD

Internal Medicine  ·  
Male  ·  
Age 68
Dr. William Giesen, MD is an internal medicine specialist in Darien, CT and has been practicing for 43 years. He graduated from Georgetown Univ Sch Of Med in 1975 and specializes in internal medicine.

1500 Post Rd Ste 2

Darien, CT 06820

Contact Information

(203) 655-2516

Insurance Accepted

  • Aetna
  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Louisiana
  • Blue Cross Blue Shield of Massachusetts
  • Cigna
  • Empire Blue Cross Blue Shield

*Please verify this information when scheduling an appointment.

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1  Specialties

  • Internal Medicine

1  Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

56  Conditions Treated

Read Less

11  Procedures

  • Cholesterol Screening
  • Diabetes Counseling
  • Diabetes Screening
  • Electrocardiogram (EKG)
  • Fecal Occult Blood Test for Colorectal Cancer
  • Liver Function Test
  • Osteoporosis Screening
  • Prostate Cancer Screening
  • Pulmonary Function Test
  • Thyroid Screening
  • Wellness Examination

Background Check

0 Malpractice Claims

No malpractice history found for Connecticut.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Georgetown Univ Sch Of Med
    Medical School | Graduated 1975
  • Hartford Hospital
    Internship Hospital | Completed 1976
  • Hartford Hospital
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Giesen has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Giesen does not have any memberships or affiliations listed. If you are Dr. Giesen and would like to add memberships or affiliations, please update your profile.

Dr. Giesen's Reviews

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Average Wait Time
  • 10 – 15 minutes
Dr. Giesen's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. William Giesen, MD
Excellent Doctor. I have been his patient for 20 years. He cares about his patients, provides excellent guidance and closely listens to what I am saying. A+++++
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Wayne in Wilton, CT – Jul 09, 2018
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The best doctor that I have ever had in my 47 years of life. Truly is very thorough and awesome to visit!! Highly recommend.
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Brad – Dec 20, 2017
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I have developed a close and trusting relationship with Dr. Giesen. I feel that he is always available, that he cares, he follows up with a phone call if he is worried about me. I have experienced barriers to communication with other doctors and I feel that you really can be open and let Dr. Giesen...Read More
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Darien, CT – Jun 22, 2016
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