Robert A. DeRice D.M.D.

Dr. Robert DeRice is a Portland native. He is a graduate of Cheverus High School, Bowdoin College, and Tufts University School of Dental Medicine. He is a general dentist who began practicing in Portland in 1977. Dr. DeRice was the team dentist for the American Hockey League team, the Maine Mariners, from 1977 through 1988. From 1978 through 1985 he was a specialist consultant to the Maine State Medical Examiner as a forensic dentist. Dr. DeRice has always been involved with computers and was co-founder of a company which developed dental office software. Additionally, starting in 1988, Dr. DeRice has been a specialist consultant to three major insurance carriers. After taking a few years off from dentistry to build the Woodlands Golf Course, Dr. DeRice opened his new office, Portland North Dental Associates, in 1991.


Christine is the front desk/office manager, handling all of Portland North Dental Associate’s patient affairs. She also fills in as a chairside assistant, as needed, and is radiograph certified. She is a graduate of Stevens High School, Rapid City, South Dakota and attended the University of Southern Maine. Christine has worked for Portland North Dental since 1993.

Amanda, an R.D.H.

Amanda joined the Portland North Dental Associates team in 2007. She is the full-time dental hygienist, in charge of each patient’s hygiene appointments as well as their periodontal health. She received her Bachelor of Science in Dental Hygiene Degree from the Forsyth School for Dental Hygienists in Boston.

Shana an R.D.H.

Shana, a Portland, ME native, joined Portland North Dental in 2016 and is one of the dental hygienists for the office. She has been practicing dental hygiene since 2006 and received her Dental Hygiene Degree from University of New England.



Ramon joined Portland North Dental in 2011. He grew up and graduated high school in the Dominican Republic. After living in New Mexico for two years, he and his family settled in Maine. He has worked in the dental field since 2010 and is radiograph certified.

Mary Beth

Mary Beth joined PNDA in 2016 after having graduated from Dental Careers Institute and working 3 years for another dental practice. A Portland, ME native, she graduated from Deering High School and has a B.A. from The University of Southern Maine.