Our Practice


Alexa S. Keegan, DDS FICOI

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Dr. Alexa S. Keegan is from Libertyville, Illinois.

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She earned her DDS degree from Northwestern University and went on to complete a General Practice Residency at Advocate Illinois Masonic Hospital.

Dr. Keegan enjoys all aspects of general dentistry and treats patients of all ages.  She can perform a wide array of procedures allowing patients to remain on site for much of their dental care.

Dr. Keegan is committed to her practice and loves nothing more than attending courses to further her dental education.  She has achieved Fellow status with the California Implant Institute and the International Congress of Oral Implantologists, and she is a Certified Pinhole Surgical Technique™ Clinician.

She spends most of her spare time with her husband and two daughters.


Holly Kosowski, BS
Office Manager

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Holly has been friends with Dr. Keegan since they met in junior high school. She has a Bachelor of Science Degree in Health Education from Illinois State University.

Before joining East End Dentistry, Holly spent 8 years as a Substitute Teacher for Libertyville District 70. She lives in Libertyville with her husband Matt and their two daughters Lauren and Jane.


Christine Ramsak, RDH


Chrissie graduated from the College of Lake County with a degree in dental hygiene in 2012. She also holds additional certificates in local anesthesia, nitrous oxide and laser therapy.

Dentistry has always been a passion of hers—she’s been working in the dental field since she was 16! Chrissie is an active member of the American Dental Hygiene Association and is committed to keeping up with the latest education to provide the best quality care possible for her patients.

Aside from dentistry she is also passionate about our overall health especially nutrition and exercising. In her spare time she enjoys spending time with her husband and their two French bull dogs, reading, and sewing.


Amanda Strapko, BS
Dental Assistant

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Amanda graduated from Viterbo University in La Crosse, WI in 2018 with a degree in Biology. She decided to go into the dental field her sophomore year of college and hopes to go to dental school.

Amanda lives in Glenview and enjoys spending free time with her family and friends. She also enjoys exercising and staying active outdoors.