Dr. Colleen A. Keegan, DO

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Get to know Dermatologist Dr. Colleen A. Keegan, who serves patients throughout the State of Illinois.

A seasoned dermatologist, Dr. Keegan is affiliated with Northwestern Medicine Regional Medical Group, seeing patients at their offices in Glen Ellyn, Naperville, and St. Charles, Illinois. She can also be found on staff at Central DuPage Hospital.

Northwestern Medicine Regional Medical Group is the premier provider of healthcare services in the Chicago west and northwest suburbs, with more than 600 primary care physicians and specialists on their medical staff. The team works together to deliver excellent patient care and exceptional patient experiences using models that follow best practices in outpatient and inpatient settings.

Back in 1986, Dr. Keegan graduated with her Doctor of Osteopathic Medicine degree from the Midwestern University Chicago College of Osteopathic Medicine. She then went on to complete her internship at the AMITA Health/St Francis Hospital in 1987, followed by a residency in dermatology with the Cook County Health and Hospitals System in 1990.

Passionate about her profession, the doctor is board-certified in dermatology by the American Osteopathic Board of Dermatology, which is an organization that provides board certification to qualified Doctors of Osteopathic Medicine who specialize in the medical and surgical treatment of disorders of the skin.

Dermatology is the branch of medicine dealing with the skin. The skin is the largest organ of the body. Dermatology is a specialty with both medical and surgical aspects. A dermatologist is a specialist doctor who manages skin diseases and deals with both internal and external causes and some cosmetic concerns involving the skin. Dermatological duties include taking consultations, providing screening tests, and undertaking non-invasive surgical procedures.

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