Working Hours Monday - Friday 08:00-16:00
Toll Free 1800.899.900

Dr. Gerald Simon

Dr. Gerald Simon is an Internal Medicine specialist in La Grange, Illinois. Dr. Simon is Board Certified in both Internal Medicine and Geriatric Medicine for adults over 65. Dr. Simon personally cares for his patients when they are hospitalized; he does not work with hospitalists and practices traditional medicine. He graduated from Loyola University of Chicago, Stritch School Of Medicine in 1982, and now has over 37 years of diverse experience. Dr. Simon has privileges Adventist La Grange Memorial Hospital, Hinsdale Hospital and Advocate Good Samaritan Hospital. Dr. Simon prides himself on caring for his patients with the utmost attention and compassion.

Two Locations



Jackie Celmer, Nurse Practitioner

Jackie Celmer is a Family Nurse Practitioner working with Dr. Simon. As nurse practitioner, Jackie is certified and licensed to perform many functions a physician does, including diagnosing illnesses and prescribing medications. She graduated with honors in 2001 from and has more than 18 years of experience in the field. Jackie has privileges at Adventist La Grange Memorial Hospital, Hinsdale Hospital and Advocate Good Samaritan Hospital.









Services Overview






Doctors of internal medicine, called internists focus on comprehensive adult medicine. While the name internal medicine may lead one to believe that internists only treat internal problems, this is not the case. Doctors of internal medicine treat the whole person, not just internal organs. They care for their patients for life, from late teen years through old age.
While an internist is often confused with a general or family practitioner there are distinct differences between the two. For instance, an internist devotes three years of education to studying adult medicine, specifically learning how to prevent, diagnose, and treat diseases that affect adults. Internists don't deliver babies, don't treat children, and don't do surgery.
They do however have wide-ranging knowledge of complex diseases that affect adults. Internists are specifically trained not only to diagnose and treat disease, but to prevent the initial onset of these diseases by recognizing and controlling risk factors such as elevated blood pressure and cholesterol. Internists are trained to diagnose and treat chronic illness and specifically situations where several different illnesses may strike at the same time.

Services include:


● General medicine
● Respiratory disease
● Vascular and heart disease
● Blood problems
● Kidney problems
● Diabetes
● Joint and rheumatologic problems
● Digestive problems
● Endocrine and hormonal problems
● Urinary problems
● Neurological problems
● Infectious disease
● Mental health like depression and anxiety
● Order laboratory and diagnostic tests, evaluate results, and make recommendations
● Flu shots, allergy injections and other immunizations
● Well woman care including Pap smears, pelvic and breast exams
● Treatment of minor injuries such as burns, muscle sprains and strains