Meet Our Team

Ashley O’Connor, Office Care Coordinator

HereDent-1390_ppaa2Ashley is the newest member to our team. Born and raised in Harford County, she graduated from Edgewood High in 2002. She began working with Dr. Longenecker and his team in August 2013. While this is her first job in the dental field, she has over 10 years of customer service under her belt. Making sure every patient has a pleasant experience from the moment they walk in the door is her main goal. In her spare time she enjoys cooking and baking, going to the movies, traveling, and spending time with friends and family, especially her nieces and nephews. Ashley loves rooting for The Baltimore Ravens and during the summer you can usually find her at the yard cheering for The Orioles, “Let’s Go Os!!”.


Danielle Lowe, Assistant

HereDent-1390_ppa1Danielle grew up in Baltimore County. After graduating from Hereford High in 2005, she went on to York College where she earned her BS in Criminal Justice in 2009. Since starting at Hereford Dental Health in January 2013, Danielle has loved training under Dr. Longenecker. Her friendly smile and warm nature, help to make you feel at ease in the Dentist’s chair.
When she is not busy with work or school, Danielle enjoys working out, spending time with friends and family, and cheering on The Baltimore Ravens and Miami Heat.


Monica Ritter-Nelson, RDH

HereDent-1390_ppzMonica grew up in Maryland, and moved to Monkton in 2000. Shortly after that she began working for Dr. Longenecker in 2001. Monica graduated with an Associates of Science Degree in Dental Hygiene, from Baltimore City Community College in 2000. She frequently attends continuing education courses to further her career. She is an active member of the American Dental Hygienists Association, and has a passion for helping her patients obtain optimal dental health.

Monica lives with her husband, 2 little boys, and family dog in Monkton. Aside from being a Dental Hygienist, she also assists her husband as a licensed real estate agent in Maryland and Pennsylvania. In her spare time, Monica like to read, garden, and teaches 3rd grade religious education.


Donna Lambert, RDH

HereDent-1390_ppDonna is a native of Baltimore, and received her Bachelor of Science Degree from The University of Maryland Dental School in 1978. As an active member of The American Dental Hygienist Association, Donna is a highly skilled clinician with a warm personality and a kind heart. She love dentistry and it shows! Donna is passionate about educating herself and her patients: she spends countless hours in continuing education. She has been working with Dr. Longenecker for 6 ½ years, and truly enjoys spending time with her patients.

Donna currently lives in Freeland with her husband of 32 years, Gary, her 94-year old mother, and her cat, Callie. She has one daughter, Megan, who is in graduate school at the University of Central Florida. In her spare time, Donna likes to garden, cook, travel, and spend lots of time with family and friends.