Summary

Dr. Cathie Gantner-Overmyer is an internal medicine physician with 38 years of experience caring for adult patients. She earned her medical degree from the University of Wisconsin School of Medicine & Public Health and has built extensive expertise in managing complex medical conditions throughout her career. Dr. Gantner-Overmyer speaks both English and Spanish, allowing her to serve diverse patient communities.

She practices at multiple locations in Oak Park, Illinois, and maintains affiliations with Rush Oak Park Hospital, Northwestern Memorial Hospital, and Teton County Hospital District. Dr. Gantner-Overmyer specializes in treating high blood pressure and hypertensive emergencies. Her practice includes preventive care services such as flu vaccinations and adult immunizations, along with routine blood testing for health monitoring. Patients have given her an average rating of 4.4 out of 5 stars on Vitals, reflecting their confidence in her comprehensive approach to internal medicine.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.4
  • 38 years of experience
  • speaks English, Spanish
  • University Of Wisconsin School Of Medicine & Public Health
  • 7 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 3 hospital affiliations
  • 6 office locations
  • Female

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Cathie Ann Gantner-Overmyer has 6 locations

Rush Oak Park Physicians Group Adult Medicine

610 S Maple Ave Ste 4600Oak Park, IL 60304
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Saint Johns Internal Medicine

555 E Broadway Ave Ste 201Jackson, WY 83001
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

Rush Oak Park Hospital

520 S Maple AveOak Park, IL 60304

Rush Oak Park Physicians Group Center for Diabetes and Endocrine Care

610 S Maple Ave Ste 5900Oak Park, IL 60304
Mon8:00 am - 4:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu7:00 am - 4:00 pm
Fri8:00 am - 4:00 pm
Sat8:00 am - 4:00 pm
SunClosed

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Dr. Cathie Ann Gantner-Overmyer, MD
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Dr. Cathie Ann Gantner-Overmyer, MDDr. Donald J Tanis, MDDr. Bonnie Tse, MDDr. May M Hashimi, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4.4 
4.5 
3.7 
38 Years of Experience 17 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English
Oak Park , ILMelrose Park , ILChicago , ILBurr Ridge , IL
Med School: University Of Wisconsin School Of Medicine & Public Health Med School: Medical College of Wisconsin
Current Profile
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Insurance Plans Accepted by Dr. Cathie Ann Gantner-Overmyer

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Cathie Ann Gantner-Overmyer has the following specialty

Specialty Expertise

Dr. Cathie Ann Gantner-Overmyer has the following 10 areas of expertise

  • Check-up
  • Diabetes
  • Endocrinology
  • Heartburn
  • Immunization
  • Lipid Disorders
  • Physical
  • Preventive Medicine
  • Vaccination
  • Weight Loss

Certifications, License, & Education

38 Years Experience

Dr. Cathie Ann Gantner-Overmyer holds an expired medical license in the states of Wyoming and Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Wyoming that expired in 2026 and an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Medical School

Graduated from University Of Wisconsin School Of Medicine & Public Health in 1989 and UNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE AND PUBLIC HEALTH in 1988.

NPI Number

Dr. Gantner-Overmyer's NPI number is 1760437263.

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Frequently Asked Questions

Does Dr. Cathie Gantner-Overmyer accept my insurance?
You can see the insurance plans that Dr. Cathie Gantner-Overmyer accepts on their Vitals profile.
How can I make an appointment with Dr. Cathie Gantner-Overmyer?
You can find contact information for Dr. Cathie Gantner-Overmyer here on Vitals.
Where is Dr. Cathie Gantner-Overmyer's office located?
Dr. Cathie Gantner-Overmyer's office is located at 610 S Maple Ave Ste 4600, Oak Park, IL, 60304.
What languages does Dr. Cathie Gantner-Overmyer speak?
Dr. Cathie Gantner-Overmyer speaks English and Spanish.
Which hospitals is Dr. Cathie Gantner-Overmyer affiliated with?
Dr. Cathie Gantner-Overmyer is affiliated with Rush Oak Park Hospital, Northwestern Memorial Hospital, and Teton County Hospital District.

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