Meet the Team


Dr. Rose S. Beicos, DDS
Dr. Beicos received her Doctor of Dental Surgery degree with clinical honors from Loyola University of Chicago School of Dentistry in 1984. Dr. Beicos is a member of the American Dental Association, Illinois Dental Society, Chicago Dental Society, and the Hellenic American Dental Society, through which she completes extensive continuing education coursework. Dr. Beicos has a broad range of experience in cosmetic dentistry and is an Invisalign certified provider.

Dr. Beicos has been a licensed general dentist in the state of Illinois since 1984 and has since practiced in Chicago’s Western Suburbs. Her offices have been located in Oak Brook since 1992. Dr. Beicos is married with two children. She enjoys spending time with her family, music, dance, and travel. Filling her already busy schedule, Dr. Beicos serves her community by volunteering at the CDS Foundation Dental Clinic in Wheaton, IL.

Dr. Zoë Vainikos, DDS


Dr. Vainikos loves spending time with family and friends, trying new restaurants and recipes, practicing hot yoga, and playing tennis. She is thrilled to be working alongside her mother, Dr. Beicos, and looks forward to taking care of your dental needs. 

Dr. Irbad Chowdhury, DMD, AFAAID, FICOI

Dr. Chowdhury received his dental degree from the Southern Illinois University School of Dental Medicine where he continued and completed his residency in Advanced Education in General Dentistry (AEGD) and Dental Implant Fellowship. He has also developed an expertise in advanced dentistry which has been the focus of his continuing education efforts.

After finishing his residency, fellowship and private practice in Saint Louis, MO, Dr. Chowdhury  decided to return home to Chicago. A former Clinical Instructor at Southern Illinois University, School of Dental Medicine, Dr. Chowdhury continues to help serve as a mentor and is adjunct faculty at Midwestern University Dental School. He is also an esteemed Fellow of the Academy of General Dentists,  International congress of Oral Implantology and an Associate Fellow of the American Academy of Implant dentistry.




Angie (center) is our joyous office coordinator and dental assistant. She has over 15 years of experience in the dental field. Angie keeps the office running smoothly by managing the schedule & insurance and also helps chairside with our dentists. Angie enjoys cheering on her daughter at volleyball meets and baking delicious desserts. Angie earned an associates degree in criminal justice and is fluent in Spanish.


Cheryl (right) has over 20 years of experience and serves as a member of our front desk and clinical team. Cheryl works tirelessly with dental insurance companies and is just a phone call away to answer any questions our patients may have. When she is not at the front desk, Cheryl is chairside bringing cheer and comfort to your dental visit. Cheryl is an animal lover (especially dogs!) and enjoys attending her daughter’s cheerleading events.


Anna (left) is part of our clinical team and has over 20 years of dental assisting experience. Her knowledge of the dental field and nurturing demeanor make her an exceptional member of our clinical team.  In her free time, Anna loves spending time with her two grandchildren. Anna received her bachelor's degree in mechanical engineering from Belarus and is fluent in Russian.

Contact Us

Office Hours


9:00 am-7:00 pm


admin only

9:00 am-3:00 pm


9:00 am-7:00 pm


9:00 am-4:00 pm


admin only

9:00 am-5:00 pm


9:00 am-2:00 pm



Rose S. Beicos, D.D.S., P.C.

1200 Harger Rd Ste 820

Oak Brook, IL 60523-1873

(630) 573-7979