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The Exchange Dental Group


Jo Biermann, RDH

Jo is a staple and true veteran of The Exchange Dental Group, having been faithfully employed at the practice since 1984. When she isn’t applying her soothing touch as a dental hygienist, she enjoys spending time with her husband and son, reading, dancing Zumba, traveling and the occasional Harley ride.

Mary Ann Liew, RDH

Mary Ann joined the practice in 2006 and has over 10 years’ experience as a dental hygienist, completing her training at New York City College of Technology. Her hobbies used to include tennis, gardening and swimming, but now her time outside of work is devoted to raising her two adorable daughters with her loving husband.

Raquel Lim, RDH

Raquel joined The Exchange Dental Group in 2011 upon graduating from New York City College of Technology. She is a native of the Philippines and when she isn’t working, she enjoys taking road trips with her husband and two sons, gardening and playing the piano.

Mary Jean Broxmeyer, RDH

Mary Jean starting working at The Exchange Dental Group in 1997 as a dental assistant. During this time, she went to school while working part-time to pursue a career as a dental hygienist at Hostos Community College. She was born and raised in the Philippines and has a 15 year old daughter who is a sophomore in high school and a husband who she’s been happily married to for 19 years.

When she is not working, she enjoy crocheting, hanging out with her daughter, and listening to music.

Fiona McDonagh, RDH

Fiona is originally from Dublin, Ireland. She moved to New York in 1994 and received her A.A.S. in Dental Hygiene from Hostos Community College. In addition to being a dedicated and enthusiastic dental professional, she is currently working towards her B.S. in education so she can better serve her community. In her free time, she loves to read, travel and spend time with her husband and three children.